diamonds, kimberlites, and related geology august 2015 · 2015-09-21 · diamonds, kimberlites, and...

THE SHEAHAN LITERATURE SERVICE

Diamonds, Kimberlites, and Related Geology

August 2015

Highlights

The Sheahan Literature Service is dedicated to advancing(research(driven(mineral(exploration(by increasing the awareness(and(availability(of scientific publications and technical resources. (

Sheahan Literature Services Patricia Sheahan

Email: [email protected]!

"The greatest compliment that was ever paid me was when[some]one asked me what I thought, and attended to my answer." Henry David Thoreau

What is life but a series of inspired follies? The difficulty is to find them to do. Never lose a chance: it doesn’t come every day!

George Bernard Shaw

“Nothing is often a good thing to do and always a good thing to say”. Will Durant.

We are pleased to inform you that GIA’s Topical Session, “"T131. Gemological Research in the 21st Century: Exploration, Geology, and Characterization of Diamonds and other Gem Minerals,” has been accepted for the technical program in Baltimore, Maryland, USA – for GSA 2015! In addition to Dona Dirlam, Jim Shigley, and Wuyi Wang of GIA, our distinguished advocates are Lee Groat, Thomas Stachel, Barb Dutrow, Howard Coopersmith, Nancy McMillan, and Skip Simmons. Last year’s session was a big success. Please consider submitting an abstract to this year’s session. The submission form is now “live” and can be found here: http://www.geosociety.org/meetings/2015/sessions/topical.asp

Please forward this link along to anyone who might be a potential submitter. The abstracts deadline is 11:59 p.m., Pacific Time, 11 August 2015. (I know this is arriving to the reference list late perhaps the deadline may be extended?

Short(Course(on(Diamonds(and(their(primary(and(secondary(sources(20(–(23(October(2015(•(University(of(Pretoria,(Pretoria,(South(Africa(Course!leaders:!Mike!de!Wit!and!John!Bristow!For!details!of!this!course!you!can!contact!Mike!De!Wit!at!dewit@icon.co.za,[email protected].!Details!forthe!2015!course!will!in!due!course!also!be!available!at:!www.ceatup.com.!Some!of!the!places!have!been!reserved!for!the!2015!Geology!honours!students!so!places!will!be!limited!and!early!bookings!is!recommended!Topics!to!be!covered!in!20!–!22!October!2015:!1.!Exploration:!History!of!diamonds,!World!diamond!markets,!Origin!of!diamonds,!Kimberlites/Lamproites!and!cratons,!Structural!geology!and!diamond!exploration,!Modern!Exploration!techniques,!Geophysics!and!diamonds,!Indicator!minerals!chemistry!(Mike!de!Wit,!John!Bristow,!Fanus!Viljoen,!Hielke!Jelsma,!Gavin!Selfe,!Owen!Garvie,!Katie!Small).!2.!Primary!and!secondary!sources!of!diamonds:!Classification!of!Primary!sources!of!diamonds!including!Kimberlites/Lamproites,!Characteristics!and!settings!of!Secondary!or!alluvial!diamond!deposits!in!South!Africa!(Orange,!Vaal!River,!!NW!Province),!Africa!and!India,!Marine!Diamond!deposits!(Johan!Stiefenhofer,!Tania!Marshall,!John!Ward,!Mike!de!Wit).!3.!Evaluation!and!Economic!Valuation!of!Diamond!Deposits:!Due!diligence!and!geological!requirements,!Diamond!valuation!(rough!and!polished)!and!size!frequency!studies,!Mining!methods,!Evaluation!of!alluvial!deposits,!financial!valuation!models!(John!Bristow,!Bob!Halvorson,!Lutke!von!Ketelhodt,!Jeffrey!Brenner/Grant!Ziegler,!Tania!Marshall).!

Dongre, Jacob, Stern The Pipe-15 kimberlite, Wajrakaur India… IN: Journal of Geological Society of India Howell, Fisher, Piazolo, Griffin, Sibley Pink color in Type I diamonds … IN: American Mineralogist Tappert, Rivard, Fulop, Rogge, Feng, Tappert, Stalder Characterizing kimberlite dilution by crustal rocks at Snap Lake IN: Economic Geology Pat Sheahan Honorary Research Associate University of British Columbia /MDRU

Sheahan&Literature&Service& &&&&&&&&& & & & & &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&Diamonds&Newsletter&–&Aug&2015&&

NEW SCIENTIFIC LITERATURE (by Source) REF # AUTHOR YEAR TITLE SOURCE REGION/LOCATION KEYWORDS

Page 1 (Scientific by Source) © Sheahan Literature Service. Printed in Canada.

&1 D1508-01 Howell, D.,

Fisher, D., Piazolo, S., Griffin, W.L., Sibley, S.J.

2015 Pink color in Type I diamonds: is deformation twinning the cause?

American Mineralogist, Vol. 100, pp. 1518-1527.

Australia, South America, Venezuela

Deposit - Argyle, Santa Elena

&2 D1508-02 Khokhryakov,

A.F., Palyanov, Y.N.

2015 Effect of crystal defects on diamond morphology during dissolution in the mantle.

American Mineralogist, Vol. 100, pp. 1528-1532.

Technology

Diamond morphology

&3 D1508-03 O'Leary, M.C.,

Lange, R.A., Ai, Y.

2015 The compressability of CaCO3-Li2CO3-Na2CO3-K2CO3 liquids: application to natrocarbonatite and CO2- bearing nephelinite liquids from Oldoinyo Lengai.

Contributions to Mineralogy and Petrology, Vol. 170, pp.

Africa, Tanzania

Deposit - Oldoinyo Lengai

&4 D1508-04 Eaton-Magana,

S. 2015 Comparison of

luminescence lifetimes from natural and laboratory irradiated diamonds.

Diamond & Related Materials, Vol 58, pp. 94-102.

Technology

Diamond - luminescence

&5 D1508-05 Yelisseyev, A.,

Khrenov, A., Afanasiev, V., Pustarovarov, V., Gromilov, S., Panchenko, A., Pokhilenko, N., Litasov, K.

2015 Luminescence of natural carbon nanomaterial: impact diamonds from the Popigai crater.

Diamond & Related Materials, Vol. 58, pp. 69-77.

Technology

Popigai

&6 D1508-06 Chepurov, A.A.,

Pokhilenko, N.P. 2015 Experimental estimation

of the kimberlite melt velosity. ( Nyurbinskaya mentioned)

Doklady Earth Sciences, Vol. 462, 2, pp. 592-595.

Technology

Petrology - geodynamic model

&7 D1508-07 Tappert, M.C.,

Rivard, B., Fulop, A., Rogge, D., Feng, J., Tappert, R., Stalder, R.

2015 Characterizing kimberlite dilution by crustal rocks at the Snap Lake diamond mine ( Northwest Territories, Canada) using SWIR ( 1.90-2.36 um) and LWIR ( 8.1-11.1um) hypersprectal imagery collected from drill core.

Economic Geology, Vol. 110, 6, Sept-Oct. pp. 1375-1387.

Canada, Northwest Territories

Deposit - Snap Lake

&8 D1508-08 Hassan, R.,

Flament, N., Gurnis, M., Bower, D.J., Muller, D.

2015 Provenance of plumes in global convection models.

G3 Geochemistry, Geophysics, Geosystems, in press available

Africa

Convection




&1 D1508-09 Luguet, A.,

Behrens, M., Pearson, D.G., Konig, S., Herwartz, D.

2015 Significance of the whole rock Re-Os ages in cryptically and modally metasomatized cratonic peridotites: constraints from HSE-Se-Te systematics.

Geochimica et Cosmochimica Acta, in press available

Africa, Botswana

Deposit - Letlhakane

&2 D1508-10 Dongre, A.N.,

Jacob, D.E., Stern, R.A.

2015 Subduction related origin of eclogite xenoliths from the Wajrakarur kimberlite field, Eastern Dharwar craton, southern India: constraints from petrology and geochemistry.

Geochimica et Cosmochimica Acta, Vol. 166, pp. 165-188.

India

Deposit - Wajrakarur

&3 D1508-11 Harvey, J.,

Konig, S., Luguet, A.

2015 The effects of melt depletion and metasomatism on highly siderophile and strongly chalcophile elements: S-Se-Te-Re-PGE systematics of peridotite xenoliths from Kilbourne Hole, New Mexico.

Geochimica et Cosmochimica Acta, Vol. 166, pp. 210-233.

USA, New Mexico

Peridotite xenoliths

&4 D1508-12 Cawthorn, R.G. 2015 The geometry and

emplacement of the Pilanesberg Complex South Africa.

Geological Magazine, in press available

Africa, South Africa

Alkaline rocks

&5 D1508-13 Schulze, D.J.,

Davis, D.W., Helmstaedt, H., Joy, B.

2015 Timing of the Cenozoic " Great Hydration" event beneath the Colorado Plateau: Th-Pb dating of monazite in Navajo volcanic field metamorphic eclogite xenoliths.

Geology , in press available

USA, Colorado Plateau

Diatremes - Moses Rock, Mule's Ear, Garnet Ridge, Cane Valley, Red Mesa, Buell Park, Green Knobs

&6 D1508-14 Whitehead, J.A.,

Behn, M.D. 2015 The continental drift

convection cell. Wilson Cycle)

Geophysical Research Letters, Vol. 42, 11, June 16, pp. 4301-4308.

Global

Convection

&7 D1508-15 Sautter, V. 2015 Martian crustal rocks

bear a strong resemblance to tonalite-trondjemite-granodiorites… Earth's continental crust ( 2.5 billion years ago).

http://phys.org/news/2015-07-curiousity, July 14, 1/4p.

Mantle

Crust - history

&8 D1508-16 Even-Zohar, C. 2015 Temporary colour

enhancement …. Treatment, story so far,

Idex Magazine, No. 303, July pp. 36-62.

Technology

Diamond color enhancement




timing, legal and commercial problems of dishonesty.

&1 D1508-17 Pell, R. 2015 Kovdor plans for

expansion. International Mining, July p. 16, 18, 20

Russia, Kola Peninsula

Deposit - Kovdor

&2 D1508-18 Presser, J.L.B. 2015 Kalahari Craton,

Yakutia craton area - seismic tomography.

[email protected], 3 images dvs inverted x-1 pdfs available

Africa

Map - kimberlites

&3 D1508-19 He, X-F.,

Santosh, M., Zhang, Z-M., Tsunogae, T., Chetty, T.R.K., Ram Moham, M., Anbazhagan.

2015 Shonkinites from Salem, southern India: implications for Cryogenian alkaline magmatism in rift related setting.

Journal of Asian Earth Sciences, in press available

India

Shonkinites

&4 D1508-20 Liu, Xi, Zhong,

Shijie 2015 The long wave length

geoid from three dimensional spherical models of thermal and thermochemical mantle convection.

Journal of Geophysical Research , Vol. 120, 6, pp. 4572-4596.

Mantle

Geothermometry

&5 D1508-21 Evans, K.A.,

Powell, R. 2015 The effect of subduction

on the sulphur, carbon and redox budget of lithospheric mantle.

Journal of Metamorphic Geology, Vol. 33, pp. 649-670.

Mantle

Subduction

&6 D1508-22 Dongre, A.N.,

Viljoen, K.S., Ma, M.

2015 The Pipe-15 kimberlite: a new addition to the Wajrakarur cluster of the Wajrakarur kimberlite field, Eastern Dharwar craton, southern India.

Journal of the Geological Society of India, Vol. 86, 1, pp. 71-79.

India

Deposit - Pipe-15

&7 D1508-23 Hystad, G.,

Downs, R.T., Hazen, R.M.

2015 Mineral species frequency distribution conforms to a large number of rare events model: prediction of Earth's missing minerals.

Mathematical Geosciences, Vol. 47, no. 6, pp. 647-661.

Technology

Not specific to diamonds but interesting reading!

&8 D1508-24 Garanin, V.K. 2015 The Fersman

mineralogical museum in the 21st century: past, present and future,

[email protected], Vol. 18, 3, pp. 24-41.

Russia

History - Fersman

&9 D1508-25 Mikhailova, J.A.,

Kalashnikov, 2015 3 D mineralogical

mapping of the Kovdor Mineralium Deposita, in press available

Russia

Deposit - Kovdor




A.O., Sokharev, V.A., Pakhomovsky, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Bazai, A.V., Goryainov, P.M., Ivanyuk, G.Y.

phoscorite carbonatite complex ( Russia).

&1 D1508-26 Chakhmouradia

n, A.R., Reguir, E.P., Coueslan, C., Yang, P.

2015 Calcite and dolomite in intrusive carbonatites. II Trace element variations.

Mineralogy and Petrology, in press available 17p.

Global

Carbonatite

&2 D1508-27 Chalapathi Rao,

N.V., Atiullah, Kumar, A., Sahoo, S., Nanda, P., Chahong, N., Lehmann, B., Rao, K.V.S.

2015 Petrogenesis of Mesoproterozoic lamproite dykes from the Garledinne (Banganapalle) cluster, south western Cuddapah Basin, southern India.


India

Lamproite

&3 D1508-28 Cucciniello, C.,

Tucker, R.D., Jourdan, F., Melluso, L., Morra, V.

2015 The age and petrogenesis of alkaline magmatism in the Ampasindava Peninsula and Nosy Be archipelago, northern Madagascar.


Africa, Madagascar

Basanites

&4 D1508-29 Chakhmouradia

n, A.R., Reguir, E.P., Zaitsev, A.N.

2015 Calcite and dolomite in intrusive carbonatites. I Textural variastions.


Global

Carbonatite

&5 D1508-30 Lyalina, L.,

Zolotarev, A.Jr., Selivanova, E., Savchenko, Ye., Zozulya, D., Krivovichev, S., Mikhailova, Yu.

2015 Structural characterization and composition of Y-rich hainite from Sakharojok nepheline syenite pegmatite ( Kola Peninsula, Russia).

Mineralogy and Petrology, Vol. 109, 4, pp. 443-451.

Russia, Yakutia

Nepheline syenite

&6 D1508-31 Whitchurch, A. 2015 Tectonics: continental

complexity. Nature Geoscience, Vol. 8, p. 502.

Mantle

Lithosphere

&7 D1508-32 Lee, C-T.A.,

McKenzie, N.R. 2015 Geochemistry: rise of

the continents. Nature Geoscience, Vol. 8, pp. 506-507.

Mantle

Plate tectonics

&8 D1508-33 Dhuime, B.,

Wuestefeld, A., Hawkesworth, C.J.

2015 Emergence of modern continental crust about 3 billion years ago.

Nature Geoscience, Vol. 8, pp. 552-555.

Mantle

Geochronology Rb/Sr

&9




D1508-34 Xie, Y., Li, Y., Hou, Z., Cooke, D.R., Danyushevsky, L., Dominy, S.C., Yin, S.

2015 A model for carbonatite hosted REE mineralization - the Mianning-Dechang REE belt, western Sichuan Province, China.

Ore Geology Reviews, Vol. 70, pp. 595-612.

China

Carbonatite

&1 D1508-35 Liu, Y., Chen,

Z., Yang, Z., Sun, X., Zhu, Z., Zhang, Q.

2015 Mineralogical and geochemical studies of brecciated ores in the Dalucao REE deposit, Sichuan Province, southwestern China.

Ore Geology Reviews, Vol. 70, pp. 613-636.

China

Carbonatite

&2 D1508-36 Lee, C-T.A.,

Anderson, D.L. 2015 Continental crust

formation at arcs, the arclogite "delamination" cycle, and one origin for fertile melting anomalies in the mantle.

Science Bulletin, DOI: 10.1007/s11434-015-088-6 online 16p.

Mantle

Eclogite

&3 D1508-37 Robert, F. 2015 Relevance and

importance of research in mineral exploration.

SEG Newsletter , No. 102, July, p. 7.

Technology

Not specific to diamonds but interesting reading!

&4 D1508-38 Rondenay, S. 2015 The LAB in Limbo-

Seismological insights into the Lithosphere-Asthenosphere system at subduction zones.

Seminar speaker July 21, U of T., 1/2p. Abstract available.

Mantle

Subduction

&5 D1508-39 Li, H., Zhang,

Z., Ernst, R., Lu, L., Santosh, M., Zhang, D., Cheng, Z.

2015 Giant radiating mafic dyke swarm of the Emeishan Large Igneous Province: identifying the mantle plume centre.

Terra Nova, Vol. 27, 4, pp. 247-257.

China

Mantle plume

&6 D1508-40 Wang, K-L.,

Prikhodko, V., O'Reilly, S.Y., Griffin, W.L., Pearson, N.J., Kovach, V., Lizuka, Y., Chien, Y-H.

2015 Ancient mantle lithosphere beneath the Khanka Massif in Russian Far-East: in situ Re-Os evidence.

Terra Nova, Vol. 27, 4, pp. 277-284.

Russia

Geochronology

&7 D1508-41 The Israeli

Diamond Industry

2015 Top 10 most expensive diamonds in the world: Millenium Star, Koh-i-Noor, Culinan, Hope, Centenary, Shawish ring, Pink Star, Beau Sancy, Moussaieff Red, Graff Pink.

www.israeildiamond.co.il, June 29, 2p.

Global

Diamonds notable - prices

8

Sheahan&Literature&Service& & & & & &&&& &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&Diamonds&Newsletter&–&Aug&2015&&

INDUSTRY NEWS (by Source) REF # AUTHOR YEAR TITLE SOURCE REGION/LOCATION KEYWORDS

Page 1 (Industry News) © Sheahan Literature Service. Printed in Canada.

&1 D1508-42 Allafrica

2015 Riozim committed to

Murowa. Rio Zim held 22 % and now controls the entity after its major shareholder Gem Holdings bought 78 % from Rio Tinto.

Allafrica.com, July 16, 1p.

Africa, Zimbabwe

News item - RioZim


2015 Angola, Russia discuss

co-operation in diamond industry. Catoca, Tchiuzo, Luaxe

Allafrica.com, July 2, 1/4p.

Africa, Angola

News item - Alrosa


2015 Debswana Diamond

Company shown commitment to the submission of training and labour.

Allafrica.com, July 27, 1/2p.

Africa, Botswana

News item - CSR

&4 D1508-45 Biesheuver, T.

2015 The missing diamond

shortage. Bloomberg.news, July 3, 3p.

Global

News item - markets

&5 D1508-46 Brazil Minerals,

Inc.

2015 Brazil Minerals, Inc. receives environmental permit for mining in new diamond and gold area. Jequitinhonka River ( inland old course).

Brazil Minerals, Inc., July 13, 1p.

South America, Brazil

News item - press release

&6 D1508-47 Canterra

Minerals Corporation

2015 Canterra announces $ 1 million financing 0.06 cts and flow through unit @ 0.08cts

Canterra Minerals Corporation, July 8, 1p.

Canada, Northwest Territories, Alberta


&7 D1508-48 CBC News

2015 Nunavut property

owners owe nearly $ 3.3 million in tax arrears. Shear Minerals owes $ 1.5 in property tax arrears on its abandoned Jericho Diamond Mine.

CBC News, July 8, 1/2p. Canada, Nunavut

News item - Shear Minerals

&8 D1508-49 CNN

2015 Rains wash out gems,

lives in Gujarat diamond district.

CNN, June 27, 1/2p. India

News item - Gujarat

&9 D1508-50 CNN

2015 Park visitor unearths

8.52 carat diamond in Arkansas. Esperanza Diamond

CNN, June 27, 1p. USA, Arkansas

News item - Crater of Diamonds

&10 D1508-51 Creamers

Mining Weekly 2015 Madagascar to pass

mining, petroleum bills Creamers Mining Weekly, July 10, 1/4p.

Africa,

News item - legal




in October - Minister. Madagascar


Mining Weekly

2015 Kimberley gets go ahead for Lerala.

Creamers Mining Weekly, July 20, 1/4p.

Africa, Botswana

News item - Kimberley Diamonds


Mining Weekly

2015 Amec launch of the UNCOVER Roadmap. …for greenfield exploration support.

Creamers Mining Weekly, July 21, 1p.

Australia

News item - AMEC


Mining Weekly

2015 DiamondCorp raises 5 million lbs oversubscribed offer. Lace

Creamers Mining Weekly, July 6, 1/4p.


News item - DiamondCorp


Mining Weekly

2015 Kimberley Diamonds secures debt finance for Botswana mine. From China based auction house Zhejiang Huitong. Lerala

Creamers Mining Weekly, June 30, 1p.

Africa, Botswana

News item - Kimberley

&5 D1508-56 De Beers

2015 Namibia and De Beers

reach agreement on Milestone 10 year diamond sales agreement.

De Beers, July 21, 1p. Africa, Namibia

News item - NDTC

&6 D1508-57 Diamante

Minerals, Inc.

2015 Announces new chief financial officer. Batovi

Diamante Minerals, Inc., July 9, 1p.

South America, Brazil, Mato Grosso


&7 D1508-58 Diamcor Mining

Inc.

2015 Diamcor first quarter diamond sales and operational update at Krone-Endora at Venetia.

Diamcor Mining Inc., July 20, 2p.



&8 D1508-59 Diamond

Investing news

2015 High hopes for Lucara Diamond's first 2015 exceptional stone tender.

Diamond Investing News, July 13, 1p.

Africa, Botswana

News item - Lucara

&9 D1508-60 Diamonds.net

2015 Namdeb CEO leaves

post for government position. Inge Zaamwani-Kamwi

Diamonds.net, July 1, 1/4p.

Africa, Namibia

News item - Namdeb


2015 HRD discovers hard-to-

detect synthetic rough diamonds: quick take.


Technology

News item - HRD Lab


2015 Seeking a better

diamond future. Diamonds.net, July 17, 1p.

Global

News item - Rio Tinto




Comments from Lieberherr Rio Tinto Diamonds.


2015 Diamond Hallmarketing

seeks to make its mark. Diamonds.net, July 17, 2p.

Global

News item - Hallmarking


2015 Diamcor generates

sales of $ 455K in 1 Q. Krone-Endora



News item - Diamcor


2015 Villagers confront EMA

Board about diamond mining pollution.


Africa, Zimbabwe

News item - EMA


2015 Peregrine Diamonds

begins summer development program at Chidliak.


Canada, Nunavut, Baffin Island

News item - Peregrine


2015 Namibia to introduce

independent rough diamond sales.


Africa, Namibia

News item - De Beers


2015 Alrosa's 1 H rough

diamond sales drop 22 %: quick take.


Russia

News item - Alrosa


2015 New synthetic detector

to be shown at HK September show: Quick Take


Technology

News item - Diamond Services


2015 Surat diamond bourse

project put on hold. Diamonds.net, July 22, 1/4p.

India

News item - Surat


2015 Mbada's security

guards unleash dogs on illegal panners.


Africa, Zimbabwe

News item - Mbada


2015 The futility of chasing

rough shadows. Diamonds.net, July 24, 1/4p.

Global



2015 Alrosa has shifted

operations at the iconic Udachnay mine…. Opened in June 1955 ..Alrosa's Largest open pit 1,600 X 2,000 m and depth 640 m. 350 million tons of ore containing $ 80 Billion worth mined diamonds.


Russia, Yakutia

News item - Alrosa





2015 Large size diamond

market under pressure. Q&A with Amir Tiroche, owner and CEO of Tiroche Diamonds.


Global

News item - Tiroche


2015 Diamond storytelling…

marketing and "A Diamond is Forever".

Diamonds.net, July 3, 2p. Global



2015 Scio revenue halves,

loss narrows to $ 4 million.


Technology

News item - Scio


2015 India to continue

importing rough diamonds for now.


India

News item - rough


2015 Zimbabwe mulls bid for

Kimberley Process chairmanship by 2018.


Africa, Zimbabwe

News item - KP


2015 Botswana's Okavango

diamond sales fell 23% in 1 H


Africa, Botswana

News item - Okavango


2015 Sightholders can defer

25% of De Beers July supply.

Diamonds.net, July 9, 1p. Global



2015 Rapaport presents

industry insights, Lussier explains 'The Diamond Dream'.

Diamonds.net, June 25, 1/4p.

Global

News item - economics


2015 Paragon Diamonds loss

widens, Revenue target for 2015 is $ 36 million.

Diamonds.net, June 29, 1/4p.

Africa, Lesotho

News item - Paragon


2015 Kimberley Process

presents roadmap for CAR compliance.

Diamonds.net, June 30, 1p.

Africa, Central African Republic

News item - KP

&11 D1508-84 DIB Online

2015 Namibia's Trustco may

acquire diamond mine and polishing factory in Namibia. Kunene Huso and NNDC

DIB Online, July 13, 1/2p. Africa, Namibia

News item - Trustco

&12 D1508-85 DIB Online

2015 Talks stalled between

Dominion and Canada's Union of Northern Workers.

DIB Online, July 13, 1/2p. Canada, Northwest Territories

News item - Dominion

&13




D1508-86 DIB Online

2015 De Beers mining production down 6% in Q2

DIB Online, July 16, 1p. Global


&1 D1508-87 Dominion

Diamond Corporation

2015 Dominion Diamond Corporation announces Chairman Robert A. Gannicott to resume duties and Brendan Bell appointed CEO.

Dominion Diamond Corporation, July 13, 1p.



&2 D1508-88 Dominion

Diamond Corporation

2015 Dominion Diamond Corporation reports Diavik diamond mine second calendar quarter production.

Dominion Diamond Corporation, July 15, 2p.



&3 D1508-89 Dunnedin

Ventures Inc.

2015 Dunnedin announces July mobiliazation and expands scope of project. Kahuna

Dunnedin Ventures Inc., June 29, 2p.

Canada, Nunavut, Rankin Inlet


&4 D1508-90 EMU NL

2015 Sale of Superkolong

diamond interest final payment from El Nino Mining.

EMU NL, July 17, 1/8p. Australia


&5 D1508-91 Firestone

Diamonds plc.

2015 Sale of Botswana operations. BK11 mine to Tango.

Firestone Diamonds plc., July 9, 2p.

Africa, Botswana


&6 D1508-92 Golden Saint

Resources Ltd.

2015 Operational update to the market: diamonds found 2.25, 2.62, 4.41, 3.12, 89 carat under .05 carat

Golden Saint Resources Ltd., July 3, 1p.

Africa, Sierra Leone


&7 D1508-93 Golden Saint

Resources Ltd.

2015 Appointment of technical and exploration consultant…. Rock Forage Consulting Services. John Ward

Golden Saint Resources Ltd., June 30, 1p.



&8 D1508-94 Ecclestone, C.

2015 Tango Mining ..

Strategy Oena .. Coverage by analyst

Hallgarten & Company [email protected] , July 6, 16p.


News item - Tango Mining

&9 D1508-95 Research and

Markets

2015 Analyzing the major diamond mines worldwide 2015. In depth 29 mines analyzed.

http://researchandmarkets.com/reports/548756, July $ 750.00 a copy

Global

News item - mines

&10 D1508-96 Idex Memo

2015 Gemfields India film

explores mystery of Idex online, July 14, 1/4p.

Africa, News item - Gemfields




rubies. Madagascar

&1 D1508-97 Idex Memo

2015 No hard times for good

ideas. Idex online, July 16, 1p.

Global

News item - marketing

&2 D1508-98 Idex Online

2015 Sarine Technologies

Galaxy System scans 10 millionth stone.

Idex online, July 2, 1/4p. Technology

News item - Sarine

&3 D1508-99 Idex Online

2015 Rio Tinto Diamonds has

completed the sale of its two holdings in Zimbabwe. 78% interest in Murowa diamonds to RZ Murowa Holdings Limited ( Zimbabwean independent company)

Idex online, July 3, 1p. Africa, Zimbabwe


&4 D1508-100

Idex Online

2015 Who wears the jewelry? ( women buying for themselves)

Idex online, July 9, 1p. Global

News item - markets

&5 D1508-101

Ehud Arye Laniado

2015 Dark Clouds loom over the diamond industry.

[email protected], July 13, 5p.

Global

News item - economics

&6 D1508-102

Ehud Arye Laniado

2015 Miners vs the Midstream: who needs to change?


Global

News item - value chain

&7 D1508-103

Laniado, E.A.

2015 Forging a path ahead for the diamond market.


Global

News item - markets

&8 D1508-104

Ehud Arye Laniado

2015 Tackling debts & fears in today's diamond market.

[email protected], June 29, 8p.

Global

News item - markets

&9 D1508-105

Karelian Diamond Resources Plc.

2015 Karelian Diamonds gets "excellent" chemistry results at Riihivaara. Kuhmo region.

Karelian Diamond Resources Plc., July 1, 2p.

Europe, Finland


&10 D1508-106

Kennady Diamonds Inc.

2015 Kennady Diamonds updates Kennady North drill program.

Kennady Diamonds Inc., July 13, 2p.



&11 D1508-107


2015 Kennady Diamonds announces Faraday 2 diamond recovery results.




&12




D1508-108


2015 Kennady Diamonds finds Faraday 2 diamond during core logging.




&1 D1508-109


2015 Kennady Diamonds drills 92 meters of kimberlite at Kelvin.




&2 D1508-110

Kimberley Diamonds Limited

2015 Lump sum turnkey contract for Lerala plant modifications excecuted. Consulmet

Kimberley Diamonds Limited, July 20, 3p.

Africa, Botswana


&3 D1508-111

Kimberley Diamonds Limited

2015 Lerala project timeline and key milestones.

Kimberley Diamonds Limited, July 24, 3p.

Africa, Botswana


&4 D1508-112

London Mining Journal

2015 Alrosa Grib grab could be nearer. ( Grib sits inside a giant oil company )

London Mining Journal, July 7, 1/4p.

Russia

News item - Grib

&5 D1508-113

Lucapa Diamond Company

2015 Lucapa is pleased to announce the Lulo diamond project achieved its monthly processing target of 10,000 bulk cubic metres for the month of June.

Lucapa Diamond Company, July 6, 3p.

Africa, Angola


&6 D1508-114

Lucapa Diamond Company

2015 New fleet arrives to scale up diamond mining at Lulo.

Lucapa Diamond Company, June 30, 2p.

Africa, Angola


&7 D1508-115

Lucara Diamond Corporation

2015 Lucara's exceptional stone tender. Karowe

Lucara Diamond Corporation, July 16, 1p.

Africa, Botswana


&8 D1508-116

Margaret Lake Diamonds Inc.

2015 Margaret Lake Diamonds Inc. acquisition of 100% interest in Margaret Lake property & land use permit.

Margaret Lake Diamonds Inc., July 13, 1p.



&9 D1508-117

Miningmx

2015 De Beers looks to SA with fresh eyes.

Miningmx, July 22, 2p. Africa, South Africa


&10 D1508- Monax Mining 2015 Margaret Dam project - Monax Mining Limited, News item - press release




118 Limited

drilling completed. July 6, 1p. Australia

&1 D1508-119

Mountain Province Diamonds Inc.

2015 Mountain Province's Gahcho Kue diamond mine 62 percent complete.

Mountain Province Diamonds Inc., July 7, 1p.



&2 D1508-120

Mustang Resources

2015 Save River IR. Mustang Resources , July 24pp.

Africa, Mozambique


&3 D1508-121

Mustang Resources

2015 Update on Save River project.

Mustang Resources , July 15, 2p.

Africa, Mozambique


&4 D1508-122

New Nadina Explorations Limited

2015 New Nadina Explorations Limited to acquire Kettle River Resources Ltd.

New Nadina Explorations Limited, July 20, 1p.



&5 D1508-123

Newfield Resources Limited

2015 Mining licence granted at Allotropes diamond project. Golu sites ( Sewa River system)

Newfield Resources Limited, July 1, 3p.



&6 D1508-124

Pangolin Diamonds Corporation

2015 Pangolin receives positive kimberlite indicator analyses for Malatswae diamond project, Botswana.

Pangolin Diamond Corporation, July 15, 2p.

Africa, Botswana


&7 D1508-125

Pangolin Diamond Corporation

2015 Pangolin appoints Dr. Leon Daniels as President/CEO and new BOD Patrick Harford; premium to market private placement ( up to $500,000)

Pangolin Diamond Corporation, July 9, 1p.

Africa, Botswana


&8 D1508-126

Pangolin Diamonds Corporation

2015 Pangolin updates Malatswae diamond project, Botswana.

Pangolin Diamond Corporation, June 30, 1p.

Africa, Botswana


&9 D1508-127

Peregrine Diamonds Limited

2015 Peregrine closes acquisition of Diamexstrat. Completes Botswana transaction and commences 2015 Botswana exploration program. DES U.K.

Peregrine Diamonds Limited, July 14, 1p.

Africa, Botswana


&10 D1508- Peregrine 2015 Peregrine provides Peregrine Diamonds News item - press release




128 Diamonds Limited

Chidliak bulk sample update and commences summer 2015 diamond resource development program.

Limited, July 21, 3p. Canada, Nunavut, Baffin Island

&1 D1508-129

Petra Diamonds Limited

2015 Trading update for the year ended 30 June 2015 FY 2016 guidance update.

Petra Diamonds Limited, July 27, 2p.



&2 D1508-130

Pure Grown Diamonds

2015 Pure Grown Diamonds wins 2015 Eco-Excellence award.

Pure Grown Diamonds, July 23, 1p.

Technology


&3 D1508-131

Kilalea, D.

2015 RBC Diamond Digest.. Through the glass darkly.

RBC Capital Markets, July , 17p.

Global

News item - markets

&4 D1508-132

Kilalea, D.

2015 Alrosa Ao Q2 production a little weaker than forecast.

RBC Capital Markets, July 21, 7p.

Russia

News item - Alrosa

&5 D1508-133

Kilalea, D.

2015 Diamond digest: Buyers rebel against high rough prices. DTC


Global


&6 D1508-134

Kilalea, D.

2015 Petra Diamonds : Q4 production and new guidance.



News item - Petra

&7 D1508-135

Rockwell Diamonds Inc.

2015 Rockwell gets through a tough quarter with support from key shareholders and outlines future plans following recent Bondeo 140 cc acquisition.

Rockwell Diamonds Inc., July 14, 5p.



&8 D1508-136

Strike Diamond Corporation

2015 Announces regulatory decision. Relief from forest fires near Pikoo.

Strike Diamond Corporation, July 20, 1p.

Canada, Saskatchewan


&9 D1508-137

Tango Mining Limited

2015 Oena operational. Tango Mining Limited, July 6, 3p.



&10 D1508-138

Tango Mining Limited

2015 Tango to acquire BK11 diamond mine, Botswana from Firestone.

Tango Mining Limited, July 9, 2p.

Africa, Botswana


&11 D1508-139

The West Australian

2015 Marmion enters Ellendale fray. ( Mines Minister)

The West Australan, July 13, 1p.

Australia





&1 D1508-140

Toronto Star news

2015 A diamond mine isn't forever… a full page on Kimberley SA

Toronto Star Newspaper, July 4, 1 page.



&2 D1508-141

Tsodilo Resources Limited

2015 Exploration geological model and exploration target for BK16.

Tsodilo Resources Limited, July 15, 5p.

Africa, Botswana


&3 D1508-142

CBC News

2015 Ekati mine expansion in NWT doesn’t need review: feds. Jay project.

www.cbc.ca, July 22, 1/4p.


News item - Dominion

&4 D1508-143

The Israeli Diamond Industry

2015 Angola's private gem: The Luarica diamond mine.

www.israelidiamond.do.il, June 29, 1/4p.

Africa, Angola

News item - Endiama, Trans Hex

&5 D1508-144

Mmegi

2015 BCL ( Bamangwato Concessions) mentions ongoing exploration for diamonds in the western part of the country.

www.mmegi.bw, June 29, 1/8p.

Africa, Zimbabwe

News item - BCL

&6 D1508-145

Rough-polished

2015 Kimberley Diamonds secures over $ 7 m to re-commision Botswana mine. Lerala

www.rough-polished.com, July 1, 1/4p.

Africa, Botswana


&7 D1508-146

Rough-polished

2015 Lucapa, partners seek to double diamond operations in Angola.


Africa, Angola

News item - Lucapa

&8 D1508-147

Rough-polished

2015 Renaissance Capital downgrades Alrosa's shares to sell and estimates them at $ 1.04.


Russia

News item - Alrosa

&9 D1508-148

Rough-polished

2015 Yakutia produced 10.8% more diamonds in H1.


Russia, Yakutia

News item - Alrosa

&10 D1508-149

Rough-polished

2015 RBZ subsidiary eyes $ 1 million for equipment to beneficiate diamonds.


Africa, Zimbabwe

News item - Reserve Bank

&11 D1508-150

Rough-polished

2015 British Embassy says Zim diamond industry 'politically sensitive'.


Africa, Zimbabwe

News item - legal

&12




D1508-151

Rough-polished

2015 Golden Saint Resources recovers 100 carats from bulk sampling in Sierra Leone.



News item - Golden Saint

&1 D1508-152

Rough-polished

2015 Belgian police are investigating illegal supply of diamonds from Africa.


Europe, Belgium

News item - legal

&2 D1508-153

Rough-polished

2015 Paragon signs legally binding agreement to acquire Mothae.


Africa, Lesotho

News item - Paragon

&3 D1508-154

Rough-polished

2015 Tsodilo adopts new exploration geological model.


Africa, Botswana

News item - Tsodilo

&4 D1508-155

Rough-polished

2015 Kennady announces Faraday 2 diamond recovery results.



News item - Kennady

&5 D1508-156

Rough-polished

2015 CAR to resume rough exports following KPCS's plan


Africa, Central African Republic

News item - KP

&6 D1508-157

Rough-polished

2015 Alrosa president visits Angola.


Africa, Angola

News item - Alrosa

&7 D1508-158

Rough-polished

2015 Rockwell Diamonds says Q1 was very challenging.



News item - Rockwell

&8 D1508-159

Rough-polished

2015 Australia to withdraw candidacy for KP vice chair.


Australia

News item - KP

&9 D1508-160

Rough-polished

2015 Pangolin identifies anomalous kimberlite indicator minerals at Botswana project, Malatswae


Africa, Botswana

News item - Pangolin

&10 D1508-161

Rough-polished

2015 Monsoon floods damage diamond polishing units in Gujarat.


India

News item - Gujarat

&11 D1508-162

Rough-polished

2015 Lucara's exceptional stone tender. Karowe rakes in $ 69 Million.


Africa, Botswana

News item - Lucara

&12




D1508-163

Rough-polished

2015 Riozim assures workers, community of its commitment to Murowa diamonds.


Africa, Zimbabwe

News item - RioZim

&1 D1508-164

Rough-polished

2015 Rio's Argyle diamond production up; Diavik flat.


Australia, Canada, Northwest Territories


&2 D1508-165

Rough-polished

2015 Alrosa reports H1 production and trading performance.


Russia

News item - Alrosa

&3 D1508-166

Rough-polished

2015 Zim's Murowa Diamonds output dips in H1. ( 50% drop in the first half of year).


Africa, Zimbabwe


&4 D1508-167

Rough-polished

2015 Pangolin finds abundant "positive" kimberlitic ilmentes at Malatswae.


Africa, Botswana

News item - Pangolin

&5 D1508-168

Rough-polished

2015 Peregrine acquires Botswana diamond company. Diamexstrat


Africa, Botswana

News item - Peregrine

&6 D1508-169

Rough-polished

2015 De Beers July sight realizes $ 200m as buyers reject goods.


Global


&7 D1508-170

Rough-polished

2015 Diamcor rakes in over $ 450K from SA Q1 diamond sales.



News item - Diamcor

&8 D1508-171

Rough-polished

2015 Kimberley okays Lerala mining restart.


Africa, Botswana


&9 D1508-172

Rough-polished

2015 DTZ-OZGEO is steadily increasing production and exploration.


Africa, Zimbabwe

News item - DTZ-OZGEO

&10 D1508-173

Rough-polished

2015 Tawana says BlueRock still interested in diamond resource. Kareevlei



News item - Tawana

&11 D1508-174

Rough-polished

2015 Alrosa increased net profit under RAS by 1.6 times.


Russia

News item - Alrosa

&12 D1508-175

Rough-polished

2015 Alfa-bank has lowered the estimate of Alosa's

www.rough-polished.com, July 23,

Russia

News item - Alrosa




shares to 100 rubles. Maintain buy recommendation.

1/4p.

&1 D1508-176

Rough-polished

2015 De Beers reviews 2015 production guidance, H1 sales weaken.


Global


&2 D1508-177

Rough-polished

2015 IDE holds symposium to discuss main issues facing the diamond industry.


Global

News item - IDE

&3 D1508-178

Rough-polished

2015 Marange villagers accuse Zim environment agency of inaction as diamond miners destroy environment.


Africa, Zimbabwe

News item - CSR

&4 D1508-179

Rough-polished

2015 Alrosa completes open-pit mining at Udachnaya pipe.


Russia, Yakutia

News item - Alrosa

&5 D1508-180

Rough-polished

2015 Shortening the supply pipeline is a unique feature of the International Diamond Week in Israel.


Global

News item - pipeline

&6 D1508-181

Rough-polished

2015 World's first electronic diamond exchange of Singapore to become operational in September.


Asia, Singapore

News item - DIE

&7 D1508-182

Rough-polished

2015 Ellendale diamond mines goes into unexpected voluntary administration.


Australia

News item - Ellendale

&8 D1508-183

Rough-polished

2015 Namibia establishing new sales and marketing company.


Africa, Namibia

News item - legal

&9 D1508-184

Rough-polished

2015 Alrosa to up investment in Angola.


Africa, Angola

News item - Alrosa

&10 D1508-185

Rough-polished

2015 Ellendale diamond mines goes into unexpected voluntary administration.


Australia

News item - Ellendale

&11 D1508-186

Rough-polished

2015 Commentary by John Teeling 'I would like to hold on to something

www.rough-polished.com, July 6, 1p.

Africa, Botswana

News item - Botswana Diamonds




commercial'.

&1 D1508-187

Rough-polished

2015 The three tipping points of Man-made diamonds.


Technology

News item - synthetics

&2 D1508-188

Rough-polished

2015 Mountain Province's Gahcho Kue diamond mine 62 percent complete.



News item - Mountain Province

&3 D1508-189

Rough-polished

2015 SA workers union against De Beers' planned sale of Kimberley Mines.



News item - legal

&4 D1508-190

Rough-polished

2015 Gems One rolls out the new 101 facet diamond cut.


Technology

News item - Epic 101

&5 D1508-191

Rough-polished

2015 Indian diamond industry decides on 'no embargo on rough import'; suggests 'self-discipline'.


India

News item - BDB, MDMA

&6 D1508-192

Rough-polished

2015 New proposals for Alrosa's strategy may follow - Galushka.

www.rough-polished.com, June 29, 1/4p.

Russia

News item - Alrosa

&7 D1508-193

Rough-polished

2015 KP leaders stress consensus and bringing CAR, Venezuela back into compliance.


Africa, CAR, South America, Venezuela

News item - KP

&8 D1508-194

Rough-polished

2015 Paragon Diamonds loss widens.


Africa, Lesotho

News item - Paragon

&9 D1508-195

Rough-polished

2015 Argyle pink diamonds tender world preview at Sydney Opera House.


Australia

News item - Argyle

&10 D1508-196

Rough-polished

2015 Over the long term, we can expect to see supply shortfall and rising prices.

www.rough-polished.com, June 29, 1p.

Global

News item - prices

&11 D1508-197

Zimnisky, P.

2015 Rough diamonds down 3.4% over last 6 months according to new rough diamond price index.

Zimnisky.com, July 9, 2p. Global

News item - prices

&12 D1508-198

Ehud Arye Laniado

2015 Antwerp and diamonds: a rocky love story.

, July 15, 4p. Europe

News item - diamond centers -history

diamonds, kimberlites, and related geology august 2015 · 2015-09-21 · diamonds, kimberlites, and...

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