may 2002 - mineral & gem society of castro valley 2002-05.pdf · may 2002 this is the bulletin...
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MONTHLY BULLETIN OF THE MINERAL & GEM SOCIETY OF CASTRO VALLEY, INC
MAY 2002
Board Meeting May 6, 2002 7:30 p.m. at the Shop General Meeting May 8, 2002 7:30 p.m. at
Elks Lodge, 24970 Hesperlan Blvd., Hayward
This Is our anniversary meeting. The Society will provide an anniversary cake.
The program will be Member Awards night and a special program by Mary Howell,
who has Just returned from Peru.
htm :/Iwww.mgscv.oom E-Mail: [email protected]
MINERAL AND GEM SOCIETY OF CASTRO VALLEY, INC. PETROGRAPH MAY 2002
This Is the bulletin of the MINERAL AND GEM SOCIETY OF CASTRO VALLEY, INC., a member of the Callfomia Federation of Mineralogical Societies, Inc., and the American Federation of Mineralogical Societies.
BULLETIN POLICY
Anonymous contributions cannot be considered for publication in the PetrograDh. However, If requested, the contributor's name will be withheld from the published material. The sources of other material will be Indicated for proper credit. Permission is granted to reprint PetrograDh articles when credit is given.
2002 OFFICERS Elected President - Larry Ham ............................................................................................. (510) 547-5906 Vice President - Tom Miller .................................................................................... (510) 793-3950 Secretary - Beth Farmer ............................. [email protected] .......................... (510) 538-3092 Treasurer - Mike Alves ........................................................................................... (510) 657-7438 1st Year Director '02, '03, '04 - Walt Klas ................................................................ (510) 537-7706 2nd Year Director '01, '02, '03 - Gordon Matsumoto .............................................. (510) 582-6087 3rd Year Director '00, '01, '02 - Mary HowelL ........................................................ (510) 537-3702 Federation Director '02, '03, '04 - Ron Hasemeyer ................................................ (510) 886-1747 Shop Foreman - Arland Stokes .............................................................................. (510) 581-8706 2002 Show Chairman - Ron Miller .................... [email protected] ......................... (510) 538-2397 Membership - Candy Jones ................ candy [email protected] .......................... (925) 671-7844 Editor - Cheryl Archer '02, '03 ......................... [email protected] .......................... (510) 889-7808 Past President - Bonnie Andrade ............................................................................. (925) 625-4393
Appointed Shop Steering Committee Chair - Willy Kochendorfer ............................................ (510) 582-7278 Scholarship Chair - Mike Alves .............................................................................. (510) 657-7438 Special Shop Fund Administrator - Willy Kochendorfer .......................................... (510) 582-7278 Li~rarian - Fern Brown ........................................................................................... (510) 357-1326 Historian - Jamie McDonald .......................... [email protected] ............................ (510) 889-7808 Purchasing Agent - Horace Robertson .................................................................. (510) 278-1085 Education Coordinator - Shirley Buschke .............................................................. (510) 797-0744 Field Trip Coordinator - H.E. Neilson ..................................................................... (510) 784-1262 Parliamentarian - Doc Buschke .......................................................................... .... (510) 797-0744 Receptionist - Dolores Barnes ............................................................................... (510) 635-2481 Host I Hostess - Dolores Barnes .......................................... .................................. (510) 635-2481 Sunshine Reporter - Mary Howell .......................................................................... (510) 537-3702 Door Prizes - AnneMarie Kochendorfer ......................................................... ....... (510) 582-7278 Web Master - David Howell ........................... [email protected] .......................... (510) 537-3702
PUBLICATION STAFF Typists Candy Jones, Beth Farmer
Reporters All MGSCV Members I Rock Rumbles, Gem of the Month Shirley Buschke Safety Information Mary Howell
Advisor Emeritus AI Richter Assembly Crew Dick Minor I Clara Minor I Dan Littman I Annemarie Kochendorfer
Billie Ashley I Horace Robertson I Janice Garcia
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Petrograph 3 May 2002
3e!t q XCii 0 t/i (jJiil q PI prepared to fill It, and Arland is eager for a ) • 0 e.r rom e 'J or: volunteer to come forward.
Hope you can. m.aRt tftt May muting. We wiCl6e wring some oj tftt peopCt wfI.o nave gone a60ve atu! Show Chairman news: Larry reported that 6eymu! tftt autits oj reguCar mem6ers. You pro6a£iy there are 2 people who have approached him to nave seen. tfttir MmtS in. tftt Petrograpft, 6ut you be co-chairs for the 2003 show. He pointed out may n.ot ~n.ow tfttir Jaw. Come atu! put Jaw to tftt that the position would be much easier with MmtS you nave seen. litre. seasoned sub-chairs. An "understudy" who
could be groomed for 2004 would make the
Shimy BuscMe teCCs me tfutt sftt has reai vel! litr future transition easier still.
.Ala.mteCa Coun.ty Fair Book. Yes, it'S time to thin.~ Editor's report: Cheryl reported that there are aDout e~i6iting at tftt Fair. More aDout this in.sU!e. only two additions of the Petrograph before
summer hiatus. She has sent out advertiser packets to Inquiring businesses. All submissions
Minutes of the Board Meeting for the future Petrographs must be submitted 6
April 8, 2002 weeks after tonight (May 20).
September submissions need to be received by President Larry Ham called the meeting to order Cheryl 2 weeks prior to issuance of the at 7:35 p.m. September Issue (September 20).
Elected office ... present: Larry Ham, Tom Librarian's report: Books are pulled from stock Miller, Beth Farmer, Mike Alves, Walt Klas, Ron and ready for the open house sale. Hasemeyer, Cheryl Archer, and Bonnie Andrade. Historian'S report: She is working on the 2002-
show documentation book. Appointed office ... present: Willy Kochendorfer, Fern Brown, Jamie McDonald, CFMS Chairman's report: Federation show is and Doc Buschke. still set for July, information is in the library.
Paradise workshops will be expanded to two The February meetings were moved for weeks In September this year. approval by Ron, seconded by Cheryl. Motion passed. Unfinished buslne .. : Purchase of any Genie
machines has been tabled for a meeting of the The March meeting minutes were moved for shop steering committee. approval by Ron, seconded by Cheryl. Motion There was discussion of involving a larger passed. number of members in club activities by
Treaaurer's report: Mike made a preliminary breaking down some positions to smaller jobs. There may then be a need for a coordinator to
report of show profits to be around $25,000. The monitor the larger groups' status each month. March report was moved for approval by Ron, seconded by Tom. Motion passed. New buslnese: Bonnie Andrade nominated life
memberships, club longevity and acknowledge-Shop Forman report: The second floor fire ment awards. Ron moved that they are escape has been completed. The exit Is by the approved, Cheryl seconded. rest rooms. There Is still a need for beginning cab Instructor, a casting crew of two people, and Board vote was unanimous. The general perhaps shop supervisors for Sunday and membership must approve the life evening. Both the beginners and advanced class memberships. lists need updating. Some students are not committing to the classes they have signed up There Is still investigation of several other for. members before nomination.
Ron pointed out that the first year director is Correspondence: The magazine Rock & Gem responsible to fill that position. Walt is not has offered club members a subscription break
Petrograph 3 May 2002
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Petrograph 4 May 2002
for yearly cost of $19.95. Further info Is in the summer, the September issue will resume ) office. monthly Petrographs.
Meeting was adjourned at 9:10 p.m. Fern reported that duplicate books would be set out at the Open House for purchase. Be there
Respectfully submitted by: early I Beth Farmer, Secretary
H.E. brought fliers for up coming field trips. He will bring them to meetings in the future, and will
Minutes of the General Meeting update the "field trip" binder in the office with
April 10, 2002 maps and information.
The meeting was called to order by larry Ham Snyder Ranch trip will occur May 3,4 & 5. He Is also planning to lead a trip or two to BlM land
at 7:30 p.m. near Coalinga. He talked about the "adopt a
39 members were present in the small meeting cabin" program set up in the BlM lands, and will always be happy to take along workers to his
room. There were no guests this month. cabin, located near old mines in the North
Karl Churchill moved that the February general Mojave Desert. Ceryls lake Gem & Mineral Club are having its annual field trip and show the
meeting minutes be approved, Cathy Howard second week of October. seconded. Motion was approved unanimously. Delores Barnes moved that the March general Mike Alves reported the gross income from the meeting minutes be approved, Cheryl Archer 2002 show was between 22 to 23 thousand seconded. Motion carried with one abstention. dollars. This and the membership income just
covers our rent costs. Beth Farmer presented a program about minerals collected during various travels. Ron H. reminded anyone interested in the Trona Arland reminded the membership about shop (Ceryls lake) trip to bring a total change of cleanup this Saturday, and the open house on clothing to change into prior to getting in a Sunday. He reported that the shop is now open vehiclel The mucky brine is a real mess. e days and evenings a week. Regular hours will be posted on the shop information board. He also reported that the Black Diamond Mine There is stili a need for casting crews and has a coal seam and silicate pit open for casting instructors that can commit to working examination. consistent hours. Cathy Howard volunteered to learn the process. Charlotte suggested that the June meeting have
a "Show & Tell" about hobbies and art that Arland also pointed out that a new Monday night members do that doesn't include rocks. This has cabochon instructor is needed, and anyone who been a big success in the past. has made a cab can serve as instructor.
Bill & Jessie Jeans won membership drawing of The Minors have performed the Petrograph $100. This has been won 2 months in a row I mailing preparation for 27 years, and we retired them e months ago. The job entails putting Door Prizes were won by: Shirley Buschke, Nikl address labels on each pre-collated copy, Churchill, lenore Brest, Jamie McDonald, Dan stapling it closed and sorting into groups by zip Littman, Vern McCulloch, Cheryl Archer, Naomi code. Taking the finished groups to the Castro Morgan, and H.E. Neilsen Valley Post Office is the last chore, but this can be performed by another person if need be. Walt The meeting was adjourned at 8:50 p.m. Klas volunteered to drop them off.
Cheryl reported that the email Petrograph has Respectfully submitted by: Beth Farmer, Secretary
been retired, since only 12 people used the service. All summer Petrograph information ~~~~~~~~~ must be submitted for the June issue. After the
Petrograph 4 May 2002
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Petrograph
(We recommend that you call or e-mail ahead to verify dates and time if contact information is
provided This may save you time and resources, especially if the trip takes you very far ajleld)
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MAY 4-5
JUL 12-14
JUL 16-21
Canadian Federation Calgary, Alberta (25th anniversary celebration)
California Federation 23rd Annual Show/Convention "Treasures of the Sierra Nevada" EI Dorado County Fairgrounds 100 Placerville Drive Placerville, CA 530-622-3030
Northwest Federation/AFMS Port Townsend, WA
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APR 27-28
JUL 12-14
Santa Cruz Mineral & Gem Soc Santa Cruz Civil Auditorium Corner of Center & Church Sts Hours 10 - 5 both days
CFMS 23RD ANNUAL SHOW See Federation show list above
•• a ••• ~& ••• & Tlia.ni you,
Shirley Buschke Jim and Mary Bufton Karl and Niki Churchill Diane and Mike Alves Janice Garcia
For tftt c!e!idous refreshmtnts you provi4t4 for our April mteting. For tftt May anniversary mtetingi tftt Society wi
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Petrogl'lph 6 May 2002
models, and there are costs for casting which working with sliver when he was 8 years old and ) uses plaster and power. Even the store has finally graduated to using gold when he was 16.
small offerings for your dough. Our profit Is By the time he was 28 he was considered a slight-only rounding off figures but every little master goldsmith. Now he only occasionally bit helps. Many of our friends pay for our chooses to work with metals for jewelry. Instead donated books and then re-donate them. Our he has gone on to work with other media in the budget this year is skirting very close to deficit. art field. Honor system so pay up. Look how much fun you get for your buckl Getting information from him was difficult. Why
is It so many of the really talented are so By the time you read this, you will have heard of modest? Guess they feel their work speaks for the tales of the Snyder Ranch visit. them. His wife couldn't begin to name all of his
winnings. Horace Robertson Is hoping to get a younger child's program off to a start this summer. But In 1990 our artist decided to branch out and he we need help. He has visited even more schools started to paint. He has won numerous awards. since our last report. He likes airbrush fine art and does advertising
art. A few years later he started to work with Mary Howell has returned from her trip to Peru computers and liked computer graphics. He has and the Aehley. are off to Hawaii. Probably the over 2000 published works. McThorn., too. Bob Drummond just returned from a cruise through the Panama Canal and he He seems very proud of an award called Head said he really loved the pampering he got on the of the Herd that he won because he has trip but he didn't take enough walks around the composed so many computer drawings that are deck to lose the weight he gained from the similar to screen savers. He has received no delicious food. pay for these, but he is happy to announce he
averages 30 to 40 thousand hits a day on his Beth Farmer presented our program in April web site and over 240,000 computers display and showed off some of her purchases on her his artwork. trips. She says she has been to just about all of the world's trouble spots, so now she doesn't Although our gem and his wife have been have to return. One of her favorite tools on trips members of our club for many years, she was is a machete. She even tried fossicking in the worker. He says time caught up with him, Australia using her machete. and now he is contributing his part-he is our
new web master. So now, have you guessed? Faces we haven't seen for awhile included Dick How about Mary Howell's husband David. He Duncan. Someone even asked to see his also is the father of two daughters and became membership card. Marian Alden also showed a grandfather when Mary's daughter presented up recently. them with a granddaughter.
A reminder from our shop chairman Arland A local newspaper asked a couple celebrating Stok •• : if you see sparks on any of the wheels, their golden wedding anniversary the secret of you are pressing too hard. Easy does It, and their long and happy marriage. "On our honey-remember to keep your stone moving so you moon," the husband said, "we visited the Grand don't make grooves. Go easy on the polishing Canyon and took a pack mule trip down to the wheels, too. And now with this nice clean shop, bottom of the canyon. We hadn't gone too far CLEAN UP AFTER YOURSELF. Let's keep the when my wife's mule stumbled. She quietly said place clean. 'That's once.' "We went a little farther when the
mule stumbled again. My wife quietly said, Gem of the Month 'That's twice.' We hadn't gone half a mile when
Shirley Buschke the mule stumbled a third time. My wife promptly took a revolver from her pocket and shot him In
Our gem of the month this time literally was born the head. I started to protest her treatment of the
into the jewelry business. His family owned a mule when she looked at me and quietly said,
jewelry store in Los Angeles and he started 'That's once.
Petrograph 6 May 2002
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Petrograph 7 May 2002
lfyou love to cut spheres, as our president does, pretty soon everything begins to look like a sphere, even the sphere-cutting area o/the shop!
In Honor of Mother's Day (May 12)
I learned a lot from my mother. We all did, one way or another:
Mom taught me to appreciate a Job well done: "If you're going to kill each other, do It outside. I just finished cleanlngl"
Mom taught me religion: "You better pray that will come out of the carpet."
Mom taught me about time travel: "If you don't straighten up, I'm going to knock you Into the middle of next weeki"
Mom taught me logic: "Because I said so, that's why."
Petrograph 7
Mom taught me forealght: "Make sure you wear clean underwear In case you're In an accident."
Mom taught me Irony: "Keep crying and I'll ~ you something to cry about."
Mom taught me about the aclence of oamoala: "Shut your mouth and eat your supperl"
Mom taught me about contortlonlam: 'Will you look at the dirt on the back of your neckl"
Mom taught me about atamlna: "You'll sit there until all that spinach Is finished."
Mom taught me about weather: "It looks as If a tornado swept through your room."
May 2002
Petrograph
Mom taught me how to aolve phyalca problema: "If I yelled because I saw a meteor coming toward you, would you listen then?"
Mom taught me about hypocrisy: "If I've told you once, I've told you a million times don't exaggeratel"
Mom taught me about behavior modification: "Stop acting like your fatherl"
Mom taught me about envy: "There are millions of less fortunate children in this world who don't have wonderful parents like you dol"
And moat of all, Mom taught me the circle of life: "I brought you into this world-and I can take you out of itl"
., Happy Mother'S Day' ,.
Time to Start Planning for the Alameda County Fair
It may seem early to start thinking about your exhibit for the Alameda County Fair, but it's not really that far away.
The former Gem and Mineral Building has been renamed Gem, Mineral and Hobby Building, in large part because there haven't been enough gem and mineral exhibits to fill the building. First the wood carvers, then collections of various types, moved in to share the space.
We'd like to see more gem and mineral displays in the hall, and we know we aren't alone. If you don't have enough material for a case of your own, consider combining with one or two fellow members. If you have only one or two items, consider loaning them for exhibit in the Society case. Cases are available from the fair for a nominal fee, but are on a first-come, first-serve basis, so you must plan early.
Information about entry categories, deadlines and prizes (yes, CASH prizes) is available in the Fair book. There are usually some at the shop, but if you don't find one there, or can't make it to the shop, you can call the County Fair Exhibit Office at 925-426-7611 to ask that one be mailed to you.
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May 2002
Briefly, the important dates are these: entry applications area due by May 24, and exhibits must be delivered to the fair on June 17 or 18. Be sure to allow yourself enough time to set up, especially if you are using a borrowed case.
Parking for set-up and takedown is very good, and there Is help available for moving cases and other large items.
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LET THERE BE LIGHTI Shirley Buschke
Ever wonder what these terms - chatoyance, asterism, schiller effect, iridescence, scattering - mean when referring to gems? All of these terms come under the general term interference.
In chatoyance, the gem shows single bright line across the stone. This.is called a cat's eye. Quartz and gamet often show this characteristic. Sometimes rutile forms needles that lie parallel and give the same effect. Asterism gives the effect of a star. The star may be four- or sixpointed. Needle-like structures form at right angles to each other in a 4 star and the stone must be cut to take advantage of this appearance. A hexagonal crystal system forms the sixpOinted star. Many forms of corundum exhibit this phenomenon.
Sunlight and fluorescent light can also make a gem show more than one color. Chrysoberyl is green in sunlight and red in incandescent light. Alexandrite is an example.
Minute spheres of crystobolite form into opal by arranging in an orderly way. The range of colors depends on the size of the spheres and light is bent as it passes through the spheres separating into the primary colors that make up white light. If the spheres are not in a pattem, the result is plain opal sometimes called potch. Good to practice on to get the feel of the softness of opal.
Fire agate may also show color because of the way light is bent. What happens here with the two stones is called diffraction of light because the components of the stone act as, a prism scattering the light. Included particles in a stone cam also effect the dispersion of light as it enters the stone resulting in color. Mexican fire
May 2002
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Patrograph 8 May 2002
•
) opal can range from orange to red depending provide unwarranted assurance. Many stones upon the included particle size. called jade, for example, are really something
Minerals often contribute to the color of gems. else:
Carnelian Is orange to red depending on the iron + Korean jade is bowenite, a hard oxide content. Chrysoprase contains nickel that variety of serpentine makes it green. + Transvaal jade is a massive variety of
So light and physical phenomena do make a grossular (green) garnet
difference. But who cares? Just enjoy what + Amazon jade is aventurine nature, often enhanced by man, has given us. + American jade is a rock, a mixture of
idocrase and grossular garnet + Australian jade is chrysoprase
IIScience and the Citizen" + Colorado jade is green microcline (a with apologies to Scientific American feldspar)
A freshman at Eagle Rock Junior High won first + Jasper jade is green jasper
prize at the Greater Idaho Falls Science Fair. (. Flukien, Manchurian, and Honan jades
He was attempting to show how conditioned we are all soapstone have become to alarmists practicing junk + Mexican jade is green-dyed marble or science and spreading fear of everything In our calcite environment. In his project he urged people to + Oregon jade is dark green jasper sign a petition demanding strict control or total + Silver Peak jade is malachite elimination of the chemical dlhydrogen monoxide. From Rock Writings via CHIPS via Marin Minerai
Society.
And for plenty of good reasons, since It can:
1. Cause excessive sweating and vomiting. When cutting jade ...
2. It is a major component In acid rain. The milkier the water, the better the grade
3. It can cause severe bums in its gaseous of jade. If the water isn't milky, then you state. don't have true jade, you probably have one of
4. Accidental Inhalation can kill you. the other green stones listed above. 5. It contributes to erosion. From Chips N Splinters via CHIPS via Marin e. It decreases effectiveness of automobile Mineral Society
brakes. 7. It has been found in tumors of terminal It isn't jade if cancer patients.
+ A freshly broken surface sparkles in He asked 50 people If they supported a ban of the sun the chemical. Forty-three said yes, six were + You can scratch it with a knife point undecided, and only one knew that the chemical + It isn't much heavier than a common was water (H2O).
rock of similar size
Before you read that last sentence, would you <- A moon-shaped fracture appears when have signed the petition? you tap it with a hammer
~$,~t'~$,~t'~$' The only positive tests for jade are x-ray
How J oded ore We? analysis and specific gravity analysis (see the third item in the list), From Rockhound Ramhings via CHIPS via Marin
As the story above suggests, names of Mineral Society ,,- -L-- -L-- -L-- -L-- -L-- -L-- -,
materials mean a lot. Just as an unfamiliar I~ ~,~ ~,~ ~,~ ~,~ ~,~ ~,~ ~I
name arouses concern, familiar names can
Patrograph 8 May 2002
SHOP SCHEDULE Monday - 10 AM -12:30 PM lapidary
7 pm- 9 pm Beginners only In lapidary
Tuesdays -10 AM -12:30 PM lapidary 7 PM - 8 PM lapidary; Lost Wax; Square Wire (1st and 3rd); Library open 7 - 9 p.m.
Wednesday -10 AM - 2:30 PM Lapidary; Intarsla; a.adlng; Library open 10 a.m. - 12 noon 5 PM - 8 PM Lapidary
Thursday - 10 AM - 2:30 Lapidary 6 PM - 8:30 PM Lapidary
Friday -10 AM - 2:30 PM lapidary 5 PM - 8 PM Lapidary
Saturday - 9 AM - 5 PM Juniors: adults with supervisor's approval
Note: The Shop Is for the use of members only.
PETROGRAPH
Bulletin of the MINERAL AND GEM SOCIETY OF CASTRO VALLEY, INC. Cheryl Archer, Editor P. O. Box 2146 Castro Valley, CA 94646
Dated MaterlallTlme Value
Co)1D~~:~ ;L..1 _____
lJrport Dell Signs Air Nat'l
Guard
Saklan
Our Shop: 20948A Corsair Blvd Hayward, CA
Telephone: (610) 887·9007
PRSRT STD U.S. POSTAGE PAID .00 MAILED FROM ZIP CODE 94580 PERMIT NO. 42
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