i mud tank -mining water supply · the mud tank gemfield is located approximately 160 kill...

Technical Report WRD95036

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I I I I I I I I I I I I I I I I I I I I

Report No: 36/1995A

E.ROOKE

Mud Tank - Mining Water Supply

Bore Completion Report

RN 16676 AND 16677

SUPERVISING HYDROGEOLOGIST SOUTH

WATER RESOURCES BRANCH, ALICE SPRINGS

August 1995


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SYNOPSIS

Two mining water supply bores, RN 16676 and RN 16677 have been

constructed for Australian Vermiculite Industries Ltd. on land

portion PL 3790 which encompasses Mud Tank Mineral Lease (MLS 165).

Bore RN 16676 has a recommended maximum yield of 0.5 Lis. RN 16677

has not been tested; however it should be capable of producing 1 Lis.

RN 16676 intercepts water of potable quality. RN 16677 yields very

saline "l1later suitable only for industrial use.

RN 16676 yields water from a sedimentary rock aquifer of Cainozoic

age, "l'lhilst RN 16677 draws water from a fault zone in Arunta Block

metamorphic rocks.


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SUBJECT

GEOLOGY

LOCl'.TION

KEYWORDS

Mining water supply

Mineral Lease

sedL~entary rock (sandstone)

Cainozoic

Waite Basin

metamorphic rock (gneiss/granulite)

Strangways Metamorphic Complex

Arunta Block

fault zone

Mud Tank Gemfield

Plenty Highway


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1.

2 .

3 .

4.

5.

6.

7.

8 .

1.

1.

2.

3 .

4.

A.

B.

C.

INTRODUCTION

B."I.CKGROUND

PHYSIOGRAPHY AJ.'ID GEOLOGY

h-WROGEOLOGY

DRILLING AND TESTING

CONCLUSIONS

RECOMMENDATIONS

REFERENCES

\'lATER QUALITY DATA

LOCATION MAP

LOCALITY MAP

GEOLOGY MAP

BORE LOCATION ~~

COMPOSITE LOGS - RN 16675

- RN 16676

- RN 16677

- RN 16678

CONTENTS

TABLES

FIGURES

APPENDICES

LOG GRAPH OF 100 MINUTES' DRA~IDOWN VERSUS DISCHF~GE - RN 16676

TEST REPORT - RN 16676


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bgl

EC

ID

kID

Lis

m mg/L

OD

Ern

SWL

TD

TDS

f.LS/cm

below ground level

electrical conductivity

inside diameter

kilometres

litres per second

metres

milligrams per litre

outside diameter

registered number

standing water level

total depth

total dissolved solids (in mg/L)

microsiemens per centimetre

AUSTRALI&~ VE~~CULITE INDUSTRIES Ltd

DEPARTMENT OF MINES Al.~ ENERGY (through

WATER RESOURCES LIBRARY, ALICE SPRINGS

WATER RESOURCES LIBRARY, DARWIN

PAWA LIBRARY, DARWIN

PRINCIPAL ENGINEER GROUNDWATER

AUTHOR

ABBREVIATIONS

DISTRIBUTION

2

REGIONAL DIRECTOR SOUTE) 1

3

1

1

1

1


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1. INTRODUCTION

The Mud Tank Gemfield is located approximately 160 kill north-east of

Alice Springs (Figure 1). Access is via 8 kill of public graded road,

southwards from Mud Tank Bore which is situated beside the Plenty

Highway (Figure 2). The mineral deposit of economic interest,

vermiculite, is planned to be won by Australian Vermiculite

Industries Ltd (AVI) from Mineral Lease MLS 165 which covers Zircon

Hill (see Figure 2).

Portion PL 3790 (which includes MLS 165) was surveyed in the interest

of mineral deposits (vermiculite and zircon) and its title is vested

in the N"T Land Corporation. The area is surrounded by l'~coota

Pastoral Lease. Blue Circle Southern Ca'llent Ltd' held an exploration

title (AS81) for an area previously reserved by Depar~-nent of

Minerals and Energy (DME) , RO 303, for its mineral potential. Our

services were retained by AVI, hereinafter referred to as the client,

to drill mining water supply boreholes. Upon advice from the

Registrar of the DME, DarN'in, the search for water bore sites 'tlaS

restricted to PL 3790. Initially more favourable sites had been

selected for drilling within RO 303 but outside PL 3790. Furthermore,

as we underst~"d it, a company geologist had selected ~~d pegged a

site within MLS 165, which we were instructed by the client to drill

first.

2 • BACKGROUND

Following an exploration programme, initiated by Blue Circle Southern

Cement Ltd at Mud T~"k, exploitable reserves of vermiculite (a type

of mica) have been identified (Clutha Minerals Ltd, 1993). The

development is in an area recognised as a source of gam quali ty

zircon where fossicking is active.

1 We understand that AVI have bought out Blue Circle Southern Cement held vermiculite deposit.

the interest that in the Mud Tank


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Water Resources Bra..ch, PAWAwas requested verbally by DME to provide

a professional opinion concerning the prospects of finding

groundwater at the Mud Tank Gemfield (Re. 480.1C, Internal liRE file,

May 1995). The prospect was rated as fair; furthe.!.,nore it was

emphasised any water strikes made would almost certainly yield poor

quality water.

At the request of the Regional Director South, PAWA, Water Resources

Branch had telephone discussions with the client in June 1995. It was

agreed that WRB would proceed to drill a bore(s) and complete one for

production purposes if successful. The client forwarded $10,000-

based on our estilnate of operational costs and the drilling rig

arrived on site on 13th June 1995.

Several environmental issues impact upon the results of the drilling

works. According to an envirop~ental management statement (Clutna

Minerals Ltd, 1993), the client will negotiate with the gemstone

community the possibility of making available a supply of water to

fossickers at Mud T~~k from the company's bore. Water will not be

used in the mining and ore processing plant, i.e. it is a dry process

(ibid, 1993). Concerning potential pollution hazards, it is stated

(ibid, 1993) that no chemicals will be used either during mining or

for ore processing which otherwise might locally contfu~inate

groundwater. Water will be required for dust suppression along mine

haulage tracks.

An accommodation block at the minesite will house five persons (only

three persons are needed per production shift), (Clutha Minerals,

1993). Based on a generous per capita usage of 1 kl/head/day, then

5 kl/day maximu.rn (or 0.06 Lis) of water should satisfy domestic

requirements. An unspecified quantity of water will be needed for

other uses, such as construction works, dust suppression and

fossickers' supply.


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3. PHYSIOGRAPHY AND GEOLOGY

Zircon and Specimen Hills rise to about 10m above alluvial flats

along and to the north of Marktree Creek. Marktree Creek drains into

Waite Creek; all form part of the major drainage basin of the

Sandover River. A dissected hill range occurs immediately south of

the area of interest and trends east-west.

On a regional scale, Mud Tank lies within the Joker Flat Structural

Block of the Strangways Metamorphic Complex. This complex forms part

of the Proterozoic - aged Arunta Block (BMR, 1984). Rock types

consist of granulites and gneiss. An amphibolite facies schist zone,

the West Bore Schist Zone, cross-cuts the gr~~ulite 1 km south of the

area of interest. Tr~ee km to the south west, Heavitree Quartzite

crops out in narrow ridges; it has been deformed and uplifted against

the country rock. One km west, Cainozoic, white chalcedonic

calcareous s~~dstone occurs as an inlier surrounded by Quaternary '1 . a_ UV~u.ln.

The v,oolanga Lineament was the locus for intrusion of igneous rocks,

including the Mud Tank Carbonatite (with which zircon gemstones are

associated). It intrudes granulite in a north-east trending fault

zone approximately 7 km east of and conjugate to the major lineament.

The carbonatite underwent faulting and weak metamorphism during the

Alice Springs Orogeny. various types of mica mineral, including

commercially valuable vermiculite, are zoned around the carbonatite

and result from alteration of mafic igneous rocks by hydrothel"tal

activity.

The regional geology is shown on Figure 3.

Eluvial deposits of zircon, apatite ~~d haematite/magnetite occur on

the fla.~ks of Zircon and Specimen Hills and the area is cut by q~artz

and magnetite dykes. Alluvium occurs within the area of interest and

becomes extensive to the north (i.e. downstream of Marktree Creek


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northwards to Mud Tank Bore and beyond into the Cainozoic Waite Basin

described by Shaw et aI, 1975 and Senior et aI, 1995).

4. HYDROGEOLOGY

Previous drilling has met with mixed success in this region and water

strikes have invariably yielded small supplies «1 to 5 LIs) of poo~

quali ty ',.;ater, unacceptable for potable use (TDS values 2, 500 to

7,900 mg/L). Furthermore, yields and quality appear to ch~~ge over

distances of only tens of metres indicating isolated aquifers of

limited storage which may be subject to dewatering. Most drillholes

have targeted both the granulite/gneiss and schist 'tlith greater

success in the fOL,ner with water strikes occurring at shallow depths

(typically 16 m). Those penetrating schist have had to be drilled

deeper with less confidence of striking supplies due to their

tightness when fresh and transformation to clays when '."eathered.

The record of a roads bore (RN 13904) which has been geologically

logged' by the author (originally logged by the driller) indicates

that it intercepted sedi.'llentary rocks, Drilled in 1984, despite

yielding 0.6 L/s of TDS 2,500 mglL, it was deemed a dud and

backfilled. It was drilled adjacent to RN 1673, "Mud Ta;'lk Bore"

(neither soil cuttings nor log available). The latter had a Sw~ of

30.5 m bgl measured in January 1994.

5. DRILLING AND TESTING

Sites originally identified within RO 303 as prospective for

groundwater (Re. 480.lc, May 1995) were ruled out upon later

receiving advice from DME concerning land ownership that drilling

should be restricted to PL 3790, The first site, south-'."est of Zircon

Hill had targeted a fault zone within the metamorphic rocks, whilst

the second, 6 KID due south of Mud Tank Bore on the alluvial flats,

was anticipated to penetrate sedimentary rocks.

2 copy on Bore file RN 13904 held at ~ffiB, Alice Springs.


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Sites that were drilled are sho~n on Figure 4. Composite logs of the

boreholes are included as Appendix A. Drilling took place between

13th and 20th June 1995.

Acting on instruction from the client, Bore RN 16675 was drilled at

a pre-defined site identified by independent advisers to the client.

A seepage was struck at 23.5m with an EC reading of 8,150 ~S/m. The

hole was drilled down to 55 m with no increase in yield in a unifoL'"

rock type (slightly weathered to fresh gneiss) . It was backfilled and

abandoned. During the drilling of this site three other sites were

selected by the author.

RN 16676 was drilled 800 NNE of ~~ 16675 on a floodplain near the

confluence of several creeks. Adjacent to the site to the east,

running north -south was a low but pronounced "terrace" of quartz

gravel. &'\f 16676 struck 0.2 Lis of potable quality water at 55 m in

sandstone which increased as drilling continued to 0.5 Lis. Drilling

was terminated at 67 m. The hole was lined with 150 rom NB steel

casing to 66.6 m with perforations made from 53.9 to 60.2 m.

(The sedimentary rock aquifer penetrated by &~ 16676 is probably the

same one intercepted by RN 13904 (see above). Locallv, it probably

delineates the southern-most margin of the Waite Basin) .

RN 16677 was sited Lrrnnediately south of a quartz "dyke" striking

eastwards where it was cross-cut by a magnetite-rich vein running 11 , t "he t ., • S . F.. " , D '1" d' 9t· para_ e_ 0 _ s r~Ke o~ pec~men "~~_. r~ _~ng commence on _ n

June. Rock type encountered was a calcareous schist with quartz

veining. A seepage was struck at 18.5 m which increased to 0.1 Lis

at 30.5 m with an EC of more th~~ 10,000 uS/em. The hole was left ,

open and the rig moved to the next site (see below). The rig was

moved back over this hole on 20th J~~e and it was drilled on to a

total depth of 57.5 m. A supply of 1 Lis was encountered between 44

m and 47 m. A production string of 150 rom NB steel casing ,.;as run . h hi· h 9 '" b 45 d -1 - . 1 ~nto t e .0 e w~t mm per.l.orat~ons set etween. m an ::>_.:0 m og .

RN 16678 I.;as drilled 700 m west of RN 16677 and 100 m north of the

sal'!!e fault targeted by &~ 16677. It ',,·as sited on a creek bank along


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I I I I I I I I I I I I I I I I I I I

~

strike from a quartz dyke which terminated abruptly against the

opposite ba.."lk. After penetrating highly to extremely weathered gneiss

the rock became harder with depth and drilling was abandoned at 40

m after hitting fresh gaL~let-rich gneiss at 36 m. This dry hole was

backfilled.

A three by 100 minutes step-test (at 0.2; 0.4 and 0.6 Lis) ''''as

carried out on RN 16675 on 16th June 1995. SWL prior to co~~encing

pumping was 45.3 m bgl. After allowing 18 hours recovery, a second

step- test was done commencing at a rate of 0.6 LIs; increased to 0.8

Lis for the last 100 minutes. The pump used was a "640 Mono" powered

by a 3 cylinder Lister diesel engine. It was installed at 54 rn bgl,

that is at the top of the perforated casing. At 0.6 Lis a maximum

drawdown of 5.3 m occurred which, ostensibly, had levelled out. At

0.8 Lis there was 8.2 m of drawdown which continued to accelerate

until the bore was on the verge of forking. Pn analysis of the tests

is given as Appendix B. Care should be taken in any interpretation

of this graph as steady-state conditions were not attained.

Based on short duration test pumping, the recommended pumping rate

for RN 16676 should not exceed 0.5 Lis continuous discharge. The pump

should be set at 54 m bgl; this provides 8 m available drawdown at

present water table conditions. It is understood that the client is

installing a header tank; this should allow for 24 hours' storage in

case of pump failure or maintenance. Ideally, an air-line (in the

bore) and a meter (delivery main) should be installed to measure

pumping water levels and abstraction, respectively.

EC readings remained consistent for the duration of test :;H.l-,uping

(range of l360 I.lS/c.'Il to 1480 I.lS/cm), indicating chemically good

quali ty water, sui table for drinking. Turbidity was high for the

first hour of pumping with a yellow discolouration; thereafter

becoming clean with no suspended solids. Bacteriological testing was

not done.

The client was satisfied with the level of testing on fu~ 16676. He

did not require bore RN 16677 to be tested ("hich will not be


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equipped for now). Ideally, because of the saline water, the bore

casing in RJ."'J 16677 should be lined with an inert material or

withdrawn and replaced likewise. Severe corrosion of the presently

installed mild steel casing should be anticipated, especially if the

bore is p~~ped. Should water from RN 16677 be used in the future; for

example ~n dust suppression, DME should be consulted beforehand for

comment on the possible damaging environmental impact of very saline

water dispersion on soils and surrounding vegetation.

6. CONCLUSIONS

A small supply requirement of 0.1 Lis continuous yield, mainly for

domestic use by the mine caup and for secondary purposes such as

construction has been satisfied by the completion of Bore RJ."'J 16676.

RN 16676 was finished as a production bore ~~d draws water from a

thin, sandstone aquifer believed to be of Cainozoic age.

Short duration test pumping performed on Rl"'J 16676 indicated a ~ximum

sustainable yield of 0.5 Lis of potable water.

Bore R.."l 16677, drilled into a fault zone in metamorphic rocks,

although cased was not test pumped. It yielded 1 Lis of very saline

water during drilling.

7 • RECOMMENDATIONS

1. Rl"'J 16676 should be pumped at a maxL~um continuous rate of 0.5

Lis with the pump set at 54 m bgl. This will allow 8 m available

drawdown, based on present S'fu. (Note that "Territory Pastoral

Services" were hired by the client to equip the bore. They have

installed a "Mono B Mk.3 320" submersible pu.,.-np (rated at a

maximum discharge of 0.6 Lis at 90 m total head) (Pers. Corrm.,

June 1995). A header tank should be constructed near the

accommodation block with sufficient storage volume for a 24

hours' supply, to secure against p~~p down-time.


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3 .

4.

5.

6.

R-~ 16677 should remain not equipped until such time as the mine

commences operation. Subj ect to an environ.-nenta1 statement

addressing salinity impact on soil I vegetation, this bore could

then be used for dust suppression.

The client might consider re-1ining RN 16677 with inert casing

such as PVC to protect the bore from corrosion. This step ~s

reco~-nended especially if the bore is to be equipped.

Means to monitor water levels and a water meter should be fitted

to the bore(s), during equipping. The client should measure and

report on groundwater drawdown levels.

The SI'/L and total depth should be noted each time p\L'1lping

equipment is removed from Bore 16676.

7. To minimise risk of aquifer conta..-nination, no development should

occur within a 200 m radius of Bore 16676, which is used to

obtain drinking water.

8. Bacteriological and chemical analysis may be carried out on the

production bore &"\f 16676 on a 6 monthly basis, to ensure 'Mater

quality remains wholesome.

Aerial Photographs

CAG4094, 1975

Clutha Minerals Ltd, 1993

8. REFERENCES

Alice Springs F53-14. Run 1

Nos. 0139-0143. Scale 1,75000

The Mud Ta..'1k Vermiculite Project

Mud Tank, Northern Territory.

Preliminary Environmental Report

to Accompany Mineral Lease

Application No. MLS 165


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])J'"T Department of Mines and

Energy - Environment Div.,

1994

Shaw, R.D. and Langworthy,

A.P., 1984

Shaw R.D. et al, 1975

Senior, B.R. et al, 1995

Assessment

Recommendations

Supplement for

Report &

on PER &

The Mud Tank

vermiculite Project

1:100000 Geological Map

Commentary. Stran~Nays Range

Region I NT. Bureau of Mineral

Resources (BMR) , Canberra.

Geology of the Alcoota 1:250000

Sheet, NT. BMR Record 1975/100

Cainozoic Sedimentary Basins in

the eastern Fxunta Block, Alice

Springs Region.

AGSO Jo Aus Geol & Geophys. 15

(4), pp 421-444.

Technical R

eport WR

D95036

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age 15 of 28.

- - - - - - - - - - - - - - - - - - - -~ In ITIIiJroms per 111m -lII\)l ~ "'_ olalOd) -- --- - - ,

IJORE DAlE SPECIFIC TOTAL SOOlUM POTASS- CALCiUM IlAGlIES- IfION TOTAL TOTAL SIOCA CHLORIDE SULPHATE I!I11lATE DiCARD- Al!OIlIDE ICAlC COWEJITS REGiSTEnED OF COIIOOCT- OISSOLVED II!W IUIII (TOTAl) lIARD- ALKA- ONATE FROM

}lUI1lBER SAUPlJIlG ANCE SOUOS NESS UliIlY CULOR·OEJ

RII _'" IDS pI/ lis K C. If!} Fo c.co, CaCa, SIO, CI SO, /I(J, Ilea, F HaCI

16675 14/6195 8200 5960 7.9 1400 45 220 352 4.7 2000 349 13 1680 2040 59 425 1.2

16676 11l/6/95 1465 884 7.6 183 8 39 36 uts 254 340 43 238 105 <1 414 0.9

16676 17/6/95 1566 925 7.8 189 7 85 59 ut6 455 390 61 235 102 7 476 0.6

16Bn 20/6/95 211/JO U/S 7.B 4010 U/S U/S uts UlS UlS 467 UlS 6190 Uts U/S 569 U/S

-

NHMRC GUIDELINES ... 1600 6.5- 0.3 600 400 400 100 1.7 Maxim •• xceptpll range S.5

.

WATER QUALITY DATA


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I I I I I Figures

I I I I I I I I I I I I I I I


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:l> r- KALTUKA T JAHA -

~ILLOliRA

Pi'PIJNYA

liAASTS DlUfT ............... GLEN HELEN

K]NG CANYON ~REYONGA

;:1 I . WRUNG

BARROW (REEK

~" AMMAROO

<I': DERRY WiNS

HARTS RP.NGE

.-oROSS RIVE? ALICE SPRINGS

SANTA TERESA

I AKF NASH

TOBERHOREY '" :z: <!:

-l

en :z: w w ::> o

CURTIN '---__ -'y,UlAHA orR INGS r---:";:",,,_-.¢ ERLDUNOA

LASS£il3l LOCALITY PLAN MUle" PARK

./

TENNANT CREEK

• MUD TANK ALICE SPRINGS

KULGERA NOT 10 SCALE

LOCATION MAP MUD TANK

FIGURE 1


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~oo'

I 134.020'

\

) ,

New Well

a 5 '-0 kms '~== __ == __ C= __ ~ __ ~'

MUD TANK - MINING WATER SUPPLY Locality Map

from Clutha Minerals Ltd, 1993 FIGURE 2


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I I I I I I I I I I I I

, I

I I I I I I I

Scale 1 : 100 000

D Alluvium

" , ,

~ Other Quaternary deposits

Cainozoic Sandstone

E ~- c .1 Weathered rock

[=::J Heavitree Quartzite

LJ Schist

[I Carbonatlte "

C:=J Gneiss, Granulite

~ Gneiss, Amphibolite!

MUD TANK REGIONAL GEOLOGY

,,/

\ \ ,

)

(after Geology of the Strangways Range Region 100 000 Special, 1984)

FIGURE 3


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.fIore .IM'!~S O:~G 7i1'.o.O:S IN THE ZRC"JN 1«..1. • SPE0191 l1l.t JoOl:'EA /lOT $HOInI.

• mERE )lAS !fEN SOME RE_Au~en OF nil!. EXlSTltG "CC;;SS ':10 ... 0 SiNe! SURYl;YS FOA !KlS 11 .... "

0

!"5:GsNO -~ --~ -,-",="""" II1U1 '5j

" +

2 ,

Mi: fUOCOClC.

?ll>51'ORIU .. i_E(I,S~

3

approxImate scale

\ .e.u.a ..... n'f[

~IU'U~C

tx'~T'N<I ~ .. eK

1'VICli:l,JNIt

~~QI'Q~~!I 1.Cd:~5 1IC40

M~~lt.l~ 1.Un: ..... ~u:....II) ..

CAStO SOI'IES

lltJD 110M:!:

MUD TANK - MINING WATER SUPPLY Bore Location Map

from Clutha Minerals Ltd. 1993 FIGURE 4


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I I I I I Appendices I I I I I I I I I I I I I I I


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DEPTH BORE GR.APHIC (m) CONSTRUCTlON LOG

0 1 1- 3 ,4m f'---~

r f'--- , _ "-- 1'--/

0> L-c: Backfilled f'---L-~ 10 - en

0 I'--L-L u f'---L.. - en f'---L.. L

;::;E f'---L.. ~

Cl f'---L.. 20 - 0 I'-- - "-

L-

EO f'---~-'-

- EO 1'--/-"-

O'J ~

'--, "-N -"-

30 - . .

'--L-"-

L.. - '--~L

'-- -"-, "-,

40- L-

'--"--~ '--<-'--~L -~~~

50 - '--'":" L '--=L '--/-L

- EOH 55.7m /

60 -

-

70 -

-

-

-

WATER RESOURCES COMPOSITE LOG OF BORE

STRATA AQUIFERS DESCRIPTION (Water Struck)

Mrlift Yield EO Mr Hammer Drilled 200mm dio (Us) (uS/em)

Grey, micaceous HW GNEISS

Grey, clayey micaceous .. SWL 12.9 SW GNEISS 16/06/95

~ SEEP

As above, very clqyey HW

Pink, grey feldspathic GRANULITE I GNEISS

SW

Dark grey fresh micaceous GNEISS

~ < 0.1 8,150

DATE OF BORE COMPLETlON 14106/95

0

f-

f- 10

f-

f- 20

-

- 30

f-

f-40

f-

f-50

f-

f- 60

f-

f- 70

f-

f-

f-

IMUD TANK - Abandoned Dud RN 16675 APPENDIX A1


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POWER~/;-'; ~\ ~NO - _ """

WATER \'~ .. AUTHORITY ~~

WATER RESOURCES COMPOSITt. LOG OF BORE

DEPTH BORE GRAPHIC STRATA DESCRIPTION

AQUIFERS (Water Struck) (m) CONSTRUCTION LOG

D

-~ 10 -

cr> c: en o '-'

-~ Cl

20 _ 0

E - Ji

30 -

-

40-

~

N

Cl' .S

- en o '-'

50 - (/) o

- E E

N 60 - l!)

~

o _ 0

E 70 - J3

co ~

-

-

-

II 304m

en c o

:;:; o 'o -..... '" a.. o

-0

E E

Ol

Airuft 'field EC fJJr Hammer Drilled 200mm dia

, Pink cream CALCRETE , I interbedded clay and quartz , breccia

Pink ochre clay-coated rounded sub-angular coarse SAND - fine GRAVEL. Clasts of gneissic quartz /clay with brown clay/silt coating Some grains polished. Porous

Orange - colourless sub-angular - angular fine SAND to rounded coarse GRAVEL grading down in to rounded, friable medium SANDSTONE. Grains coated with orange clay. Porous

k, above; sandy 8< micaceous Very porous

(LIs) (uSI em)

... SWl 45.3m

16/06/95

~ < 0.1 ~ 0.2 1340

~ 0.5 - light pink yellow, micaceous

quartz, feldspathic very silty EW GRANULITE. HW and white below 63m

Bedrock . "

-'-. '

b=:::l TD 66m """-'

EOH 66.6m

DATE OF BORE COMPLETION 16/06/95

o

~ 10

I-

I- 20

I- 30

I- 40

1-50

I-

I- 60

I- 70

~

MUD TANK - Production Bore RN 16676 APPENDIX A2


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DEPTH BORE GRAPHIC (m) CON$TRUCT~N LOG

STRATA DESCRIPTION

AQUIFERS (Wqt'l'" ~~r\l<;k)

"'rlift Yield EC (Us) (uSI em) "'r Hemmer Drilled 200mm die

O~----n---,,----~~'---------------------------.-----------+ 0 ~ ! '::;;~O. Brown schisty rounded GRAVEL

-

10-

-

20 -

-

30 -

-

-

50 -

-

$0-

-

70 -

-

-

-

r-I - 3.2m ",.~ (Eluvium)

0> c:

'" o '-'

U1 ::::!: o o

C1' .S co o '-'

U1

o

o o

EO EO

co to ~

L-'"

'" L-",

"'''--'" '" L-",

"'L-

co I k-,,-, c:

.0 ~

o 'o ..... 'Q)

0..

EO EO

en

1----1 551]m

EOH 57.5m

White-grey-black calcareous gneissic SCHIST Quartz veining

As above; clayey HW

Grey, Qrange, cQ!oIJrles.s. qnglliqr fine sand to fine gravel BRECCIA of quartz/schist in a micaceous silty matrix. Some grains ore smooth textured.

As above; less clayey. Porous

DATE OF BORE COMPLETION 20/06/95

MUD TANK - Non-Potable Production Bore

I-

I- 10

... SWL 14.2m

21106/95 I-

fool SEEP I- 20

I-

~ 0.1 >10,000 F- 30

I-

I- 40

':j ~ 1.0 >10,000 I

~ ~ 1.0 >10,000

I- 50

I-

I- 60

I-

1-70

I-

I-

I-

RN 16677 APPENDIX AS


Viewed at 20:02:23 on 17/02/2010 of 28.



DEPTH SORE GRAPHIC STAAT A (m) CONSTRUCTION LOG DESCRIPTION

AQUIFERS (Water Struck)

Airlift Yield EC /lir Hommer Drilled 200mm die (LIs) (uSI em)

O~----~-.-----r..~ .. ~.~.-------------------------.--------~ 0

- I 0> C

-6.5m

10 - ~ Backfilled ()

_ U1 :::;:

Cl 20 _ 0

E _ E 0) ~

N

30 -

-

+0 - EOH +Om

-

50 -

-

60-

-

70 -

-

-

-

......... .. . .. .. ........ ....... . .. .. .. ......... .. .. .. .. .. Brown fine-coarse SAND

="-~ Greenish white orange grey _<-L HW-EW GNEISS "-"---

=<= -:-L Grey HW GNEISS _ L

=~~ -"-"-.

L...

L...L As above, SW

-~ ":- HW GNEISS I GRANULITE _";-L As above, SW

=";-~ Grey, fresh garnet-rich GNEISS

DATE OF SORE COMPLETION 20/06/95

!MUD TANK - Abandoned Dud

I-

Dry I- 10

1-

I- 20

f- 30

I- 40

f-50

I- 60

I-

1-70

1-

I-

I-

RN 16678 APPENDIX A4

Technical R

eport WR

D95036

View

ed at 20:02:23 on 17/02/2010P

age 26 of 28.

--------------------

> "U "U m z o >< OJ

~

E ~

8 ~

(j)

z ~ CI

~ a: CI

Limit of available drawdown (pump set at 54m bgl)

10 1

\ ~

, (

V ----j ,- - V I- -

7 ~ -

V ! ,

T - - i , /

/ -

V ..

V /

10° / 0.1 0.25

SWL = 45.3m bgl on 16/6/95

- -

- --

,

._-- -- - - - - I-j

--

. --0.5 1.0 2.5 5.0 10 1

DISCHARGE (LIs)

LOG GRAPH OF MAXIMUM 100 MINUTES'

DRAWDOWN (S100) VERSUS DISCHARGE (LIs)

RN 16676 APPENDIX B


Viewed at 20:02:23 on 17/02/2010 of 28.


WATER RESOURCES DIVISION

TEST REPORT - BORE RN 16676

Eor .. Loc"t;ion: Mud Tank

Client: Australian Vermiculi te Industries Ltd

zntended Use: Mining & Mining Camp (Domestic) Water Supply

Map: Laughlen 1:100000 (Alice Springs)

Grid R.ferencQ, 426762E 2455388N *********************-*********************************************************** RECOIllMENIlA'l'J:ONS

PtmIpiIlg Rate, 0.5 L/s Pump Setting: 54 m below Gro~~d Level.

General recommendations are given on the reverse side. sust.ain higher pumping rates with deeper pump settings Further advice can be obtained from:

The aqtlifer and bore or for short periods.

Water Resources Branch, Nth Stuart Highway, ALICE SPRINGS, NT., 0870

(In all correspondence please refer to bore's RN n~~er) ********************************************************************************* COI>mLE'l'J:ON IlE'l'AILS

FL~ished depth: 66.6 m Completion Date: 16.06.95 Standing Water Level: 45.3 m on 16.06.95

BORE CONSTRUC'l'J:ON

:tnt .. :z:val (m)

0.0-3 0.0-53.9 53.9-60.2 60.2-66.6

WARNJ:NG: Min;,",,,,, iIltw:nal bora diameter

'l'ES'l'mG DE'l'AJ:LS

Test Date! 17.06.95 Test Rates: 0.2;0.4;0.6;0.8 Lis Test Duration: 1*300 + 1*200 mins.

Description

209 rom ID bl~Jc steel cas~ng 154 rom ID blank steel cas~ng 154 rom slotted steel casing 154 rom ID blar.k steel casing

is 154 mm

Notes: 1. Top of casing as constructed ~Jas above ground level. 2. All depths are measured from natural ground level. 3. Test rates are not necessarily indicative of sustainable long term

pumping rates.

*********************************************************************************

COMMEN'l'S

The above recommendations are based on short-duration test pumping at different rates for only 500 mins total test tLue. It assumes that hydrogeological conditions remain constant.

Provision to monitor abstraction rates l monitor ·aater levels & obtain water s~~les should be incorporated when equipping this bore. A log book should be kept on-site to note this data. It is recommended that ch~~cal ~~d bacteriological samples are forwarded to the Laboratory, WRB! Alice Springs for w~alysis.

Total depth & SWL should be recorded each tL~e the pump is remopved from the bore & results forwarded to ~ffiBl Alice Springs.

*********************************************************************************

WATER QtnU.:t'l'Y

Refer to analysis No. 95/96/0048

Prepared by: E.R. ROOKE APPENDIX C

boredata


Viewed at 20:02:23 on 17/02/2010 of 28.

RECOMMENDM.':tONS FOR F:tN:tSR:tNG, OPEaA~:tNG AND PRO'l1E~:tNG GROmmwA'l'ER BORES

Attention the follovnng points will ensure a long and safe life for the bore supply ~~d help prev~~t pollution of the groundwater resource.

1.

2.

3.

4.

s.

6.

Construct a concrete apron arotUld the bore head to prevent surface flow, seepage and waste from entering the bore.

Seal the space between the casing and pump equiprne.~t to prevent entry of veImini dirt and pollutants.

Maintain pumping equipment in good order to prevent pollution. spillage of fuel and oil on the ground around the bore. fertiliser and other chemicals at least SO m away.

Prevent Store

Keep stock away from the bore head. Discourage domestic activity at the bore. ~ne first tap on the pipeline should not be less than 5 m from the bore head.

Pumping the bore a higher than recommended rates may fork the bore leading to instability or pump maintenance problems. Seek the professional advice of an hydrogeologist or groundwater engineer.

If the bore is no longer required, the casing is to be ra."11oved O~ securely capped and the bore backfilled with clayey material. A cement plug may be required in some instances.

IN ADDITION, please ensure that the BORE IDENTIFIC-l\.TION TAG is retained securely at all times. The registered bore number is Water Resources Division-'s only reference to the scientific and engineering data on this bore, and hence important to :;'-1RD' s further advice to bore owners.

BORE LOCATION MlIP

boredata


i mud tank -mining water supply · the mud tank gemfield is located approximately 160 kill...

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