"

, -(

MONTHLY BULLETIN OF THE MINERAL & GEM SOCIETY OF CASTRO VALLEY, INC Visit our website at www.mgscy.com .AE.Mallusatmgacy@yahoo.com

Fe6ruary 2004

Board Meetings 7:30 p.m. at the Shop February 9,2004

March 8, 2004

General Meetings 7:30 p.m. at Mt. Eden Presbyterian Church, 26236 Adrian Ave., Hayward

February 11, 2004 Meet Our Scholarship Awardeesl

Refreshments: J - Q, Finger Goods

March 10, 2004 Mary Howell's Egyptian Experience

Remember we need baked goods (pies, cakes, cookies, cupcakes, donuts) for the Showl

For other ways to help, see the work signup sheet on page 7, a list of opportunities on page 8, and the case application on page 9.

MINERAL AND GEM SOCIETY OF CASTRO VALLEY, INC. PETROGRAPH FEBRUARY 2004

This Is the bulletin of the MINERAL AND GEM SOCIETY OF CASTRO VALLEY, INC., a member of the Califomla Federation of Mineralogical Societies, Inc., and the American Federation of Mineralogical Societies.

BULLETIN POLICY

Anonymous contributions cannot be considered for publication in the Petrograph. 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 petrograph articles when credit Is given.

2004 OFFICERS Elected President - Larry Ham ............................................................................................. (510) 547-5906 Vice President- Mary Howell ................................................................................ (510) 537-3702 Secretary - ........... .............. .... ....... ...................... : .......................................................................... . Treasurer - Betty Milam ....... ....................... solldcedar@attbl.com .......................... (510) 732-6717 1 st Year ,Director -'04, '05, '06 - Mark Montgomery ......................... .. ................................. .......... . 2nd Year Director - Jane Panico '03, '04, '3rd Year Director '02, '03, '04 - Walt Klas ............................................................... (510) 537-7706 Federation Director '02, '03, '04 - Ron Hasemeyer ................................................ (510) 886-1747 Shop Foreman - Beth Farmer ..................... bethfarrner(i?laol.com .......................... (510) 538-3092 2004 Show Chairman - Ron Miller .................... mllcron(i?laol.com ......................... (510) 538-2397 Membership - Bonnie Andrade ...................... .. .............................. ............ ....... ..... ......................... . Editor - Cheryl Archer '04, '05, '06 ................. claagitta@msn.com .......................... (510) 889-7808 Past PreSident - Arland Stokes ................................................. ... ..... : ....... ...... .............................. ..

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 Librarian - Fern Brown ........................................................................................... (510) 357-1326 Historian - Jamie McDonald ........................ jantares@msn.com ............................ (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 .......... ................. mQscv@yahoo.com ........ ............... ... (510) 537-3702

4ew •• f PUBLICATION STAFF

Typists Betty Milam, Beth Farmer, Jane Panico Reporters All MGSCV Members I Rock Rumbles, Gem of the Month Shirley Buschke

Safety Information Mary Howell, Field Trips/Shows Ron Hasemeyer Silent Auctions/Juniors Jane Panico Assembly Cft')W Charlette Snyder, Jeanette Garetto

P,etrograph 1

... DCoIe.tJrom the !l':re31'tlenf ,.. (An unusual state of qfJairs: The Editor has nothing to say this monthl Fortunately, our President does, so we are turning over our space to Larry Hamfor ajew words about the slale of the club. Please take his words to heart. - Ed)

Well It's that time of the year we all look forward to so much again. No, I am not referring to that joyous experience known as taxes. I'm talking about SHOW TIME 11111 March 5,6 &7 are this year's dates. As always, we need lots of help beginning on Sunday, February 1, 10:00 a.m. at the shop, when we will be loading the ,large truck. If you have a pick-up truck, please bring it along,

Of course, we need help all the rest of the week as well. Bonnie Andrade or Ron Miller will be contacting everyone - please be generous with your time. This Isn't really an optional activity - all members are required to work at the show. Please remember that the sum total of our yearly dues doesn't even come close to covering three months of shop expenses. The show is what allows our club to operate for the year.

For the past several years we have had a terrible time on Fridays staffing the show. With so many of our members retired you would think we could get enough people on a Friday but it just doesn't seem to be so. If you are available Friday the 5th please put in a few hours, (or how about all day?) at the show. Let's not forget about the take down on Sunday the 7th starting at 5:00 p.m .. If we get a big group of people the job goes pretty fast -too small a group and it seems to take forever, so be there if you possibly can.

Those of us who have been Involved with the show and other club events have become rather concerned lately. As a whole our society is having an unusual amount of trouble filling positions - temporary, ap-pointed and elected. It took us almost two years to find a replacement for Willie Kochendorfer as Beginners Instructor. We still have no Secretary on the Board. This position has been announced for months, we have approached many individuals and no one seems willing to heip. I have spoken to many long-term members and I share their concems. The question is "where will the future leadership of this society come from?" There are only two possible answers, (1) new people will step

Petrograph 1

February 2004

forward and take up the challenge or (2) the club will soon be a thing of the past.

I apologize for being so morose, but some-times the job demands It. The club needs new blood to keep going. Let's make this years show the start of something bigger. We have the best show in northem California. we all belong to one of the finest gem and mineral clubs in the world, and we have the best shop west of the Rockies. With some fresh faces we can improve on even these rather boastful - but quite true - statements. See you all at the showl

One more thing: In the January Petrograph, Mary Button's name was omitted from those who prepared turkeys for our Christmas dinner. It was Mary rather than AnneMarie who prepared one of the turkeys. Our apologiesl n~n~n~n~n~n~n~nJn~n~n~n~n~n~n~n~

Minutes of the Board and General Meeting. for January were not received before the Petrograph went to pres.. They wflf be

Included In the March 'ssue. - Ed.

f#~~~~..(t1.f#~

"~,, \~d\~".*'" \\d FROM THE SHOP MANAGER BelhFarmer

Well, last minute work for those show cases have been keeping the shop humming for the past week, and I'm sure that the whole month of February will be the same.

I'm sure that those members who love our "Genies" will be happy to know that I have ordered new Nova wheels to replace those threadbare ones.

Likewise, both of the small slab saws for general membership use are back in operation. We have the blades for the 18" sphere blank machine and the 20" slab saw.

I'm confident we will be changing out the scored or cut 50000 diamond polishing pad. Remember to bevel your stone's back before polishing. This damage is the result of an error like that.

February 2004

PC1rograph 2

FROM THE SHOP MANAGER (continued)

likewise, the sanding belts are due for replace­ment before the end of January.

We have a received a box of fresh castable, so get those lost wax items Inside our blue cabinet I Don't forget to pay the incredibly cheap 50 cents per item fee.

While we are on the subject of shop fees, I notice that we are using a lot more coffee creamer than we should. I know this because few of us are paying for coffee (hint, hint).

I will be replacing the dop wax pot soon (the top surface won't heat up correctly).

So as you can see, I do pay attention to those notes that get put in my Inboxl

See ya at the shawl

"-*,, \W1\~-*" \~. WHAT'S YOUR POsmON? Jane Panico, Second Year Director

For the upcoming 2004 year the Nominating Committee and Board are having difficulty filling the positions of Secretary, Junior Mentor, and Sunshine Chairman. Please read the descrip­tions of the jobs below and see if you can do your part for a year for the club. We would really appreciate any volunteers - new members are welcomed.

The Secretary prepares and maintains accurate records of all of the Society business. You have to attend Board Meetings (the Monday before the second Wednesday of the month) and the General Meetings (second Wednesday of the month). At these meetings you take notes or the minutes on what happens. Minutes must include: what meeting the notes are from, date and time, who made a motion and who seconded it, did the motion pass or fail, time the meeting ends and any other notes that the club membership need to read in the Petrograph for voting purposes. The Secretary also sends out any notices or correspondence that the Society needs. You must maintain a file of the minutes and any correspondences you send out. In the event the

Petrograph 2

February 2004

President and Vice President are absent at meetings, you will preside over the election of a chairman for the meeting - I doubt that will ever happen with Larry and Mary.

After you take minutes from the Board Meeting and General Meeting you will have to have these into the Editor (Cheryl Archer) for printing in the Petrograph. The minutes are easy if you keep it Simple - and that's all we want. Having email or a computer make this easier to send to the Editor but I am sure something could be worked out if you don't. (!'rue! - Ed.)

Junior Mentor is responsible for all programs for junior members in our club. The parent of the child must be present in aU activities that the junior is to participate in to assist the junior with your help. At no time should you be considered a "babysitting service." First, you teach the junior how to cab their first cab - Brazilian agate, then assist them in any project they might want to tackle. We have a supply of rough for Juniors to have one slab for their second project and minerals that they can have. You attend board meetings to report junior activities. Board meeting attendance is not mandatory since your not a voting member but it is nice to see your face and to hear the good junior newsl Lastly, you want to Include any juniors in the annual show by way of a display case or other method.

Sunshine Reporter is an appointed position that keeps tabs on everyone's well being in the club. You are to report members activities and health to the membership though the Petrograph and at the general meetings. You also report good news from members.

You will have to send cards to members who afe ill, suffer a loss, had a birth, marriage or any occasion that seems to call for sharing and caring.

If you have any questions about any of these positions feel free to contact anyone on the board or the people that hold them currently.

Tht 2004 fnu!get appears an. the. 11¢t page. PCea.se rea4 it ca.refulIy, ant! comt to the. Ftbro.a.ry meeting to discuss aru! vote on. the. 6u4get for the. coming year.

February 2004

Petrograph 3 February 2004

Proposed Budget 2004

INCOME Rock 210 Membership dues 7,000.00 Rumbles 220 Annual Show 42,000.00 Shirley Buschke 230 Shop Fees 1,000.00 235 Shop Special Fund 2,000.00 We sure do have 240 Building Fund 1,000.00 wanderers in this club. Beth 245 Donations 100.00 Farmer just got back from Florida. It rained so 261 Interest - Checking 50.00 much she couldn't get a sun tan. Mike and Diane

262 Interest - Schlrshp Fnd 400.00 Alves are headed for Mexico. Dan Littman just

264 Interest - Building Fnd 700.00 returned from an extensive visit to Brazil and now

270 Miscellaneous Income 100.00 Betty Milam and husband Richard are going to out do Mary Howell who visited Egypt. They are

TOTAL INCOME 54,350.00 going to Antarctica. We go back and forth to Hayward a couple times a week. Does that count?

EXPENSES 302 Rent- Shop 17,500.00 Renee Henderson who was a member about five 304 Rent - Meeting Hall 1,000.00 years ago sends greetings. ' She moved to

306 Telephone 700.00 Indiana and became a nurse but didn't give up on

307 Gas & Electric 3,000.00 lapidary. She plans a trip to Tucson but we may

308 Shop Expense 6,000.00 miss her.

309 Shop Special Fund 2,000.00 Maria Chow was telling us that in China she 310 Petrograph Supplies 1,350.00 worked for a book pUblisher that printed 311 Petrograph Postage 1,000.00 American cook books. When she came to this 312 Library 300.00 country she decided to try her hand at some 313 Membership 300.00 American dishes. The instructions said to fold in 314 Insurance 2,000.00 the egg whites. This threw her. She could fold

316 Taxes 100.00 paper but had no idea how to fold an egg. [We '1/

318 Scholarship 1,500.00 add this 10 the examples we found in "English Is a

320 Speakers Programs 300.00 Cr~ Language " in the January 2004 Petrograph. -Ed.] Reminds me of my first sewing machine. It

322 Door Prizes 200.00 was an Italian Necchi and the directions were a 323 Hostess 100.00 literal translation into English. ·No way could I 324 Christmas Party 100.00 figure out some of the information. 328 Open House 100.00 330 Picnic 50.00 We owe a vote of thanks to those ladies who set 332 Field Trips 50.00 up our refreshments and clean up afterwards. 334 Fed Director 500.00 We usually see Mary Bufton, Ann Marie

336 CFMS 500.00 Kochendorfer, and Janice Garcia back in the

337 Historian 50.00 kitchen with Dolores Barnes. And Larry could

339 Building Fund 1,000.00 use some help after the meeting. We have to get the room back like we found it for day school the

340 Miscellaneous 200.00 next day. 342 Service Charge 125.00

Annual Show Our shop has a mini-store where you can buy 350 Expenses 19,960.00 small amounts of wax, chains, jump rings, etc.

Much of this material has be donated and 59,985.00 therefore we ask for a small donation to help us

-) buy emergency supplies that we can sell to Total: Income· Expenses -5,635.00 members. You know, you forgot to bring your

Petmgraph 3 February 2004

Petrograph 4

ROCK RUMBLES (continued)

epoxy, etc. Check out our supplies sometime.

The February Issue of Rock and Gem has an article on panning sites along Highway 101. Our club subscribes to several magazines and you are free to peruse them at the shop. They are not to take home nor are they for sale.

Old copies and books In the bookshelves are for sale. Many of our members donate books and several I have noticed use the books as a lending IIbrary~~buylng and returning after reading. Good Idea and money for us.

Mail (E- and otherwise) From our members and friends

Many members will remember Bob Drummond He wor~d on many shows. is a skilled Jaceter, and a knowledgeable mineral collector. It's good to here from him and present a Jeatu,.e for the mineral collectors - both o/them (@) - in the club. - Ed.)

(

A recent emigrant from Northern California, I now live in Spruce Pine, North Carolina. Recently, on the way to the grocery store, I noticed a small roadside "Crystal Mine" sign directing me up a side road. Having chosen to live in this area because of my love for rock-hounding, minerai collecting, and faceting, I definitely had to find out what this sign was about. Turning off Rt. 226, onto McHone Road, I soon arrived at the Chalk Mountain Crystal Mine, located on the property of Loretta and Mitchell Warlick. Loretta is the daughter of Carl and Virginia McHone. On their property is located a small but very unusual pegmatite that Is once again producing some spectacular minerai specimens. This and other adjacent small pegmatite mines are collectively known as the McHone Mine(s).

Avery and Mitchell counties are the site of huge alasklte deposits currently being mined for feldspar, mica, and ultrapure quartz. Nearby are many small pegmatites long famous for their production of mica. feldspar. beryl . kyanite,

Petrograph 4

February 2004

thulite, apatite, columblte, and many other rare minerals. Unlike the larger pegmatite mines that draw tourists to establishments such as Emerald Village or Gem Mountain, the McHone pegma-tite Is relatively small; measuring not more than thirty or forty feet in maximum width, extending perhaps two or three hundred feet in length, and of unknown depth. What the McHone pegmatite lacka in size, It more than makes up for in assemblage of unique minerals.

Although prospected in the past, this pegmatite has never been fully delineated, and its unique mineralogy has never been thoroughly studied. Most obvious In the pegmatite are the abundant amazonlte crystals. The exposed vein is chock full of microcllne feldspar of a nice medium green color. Most of the crystals are one to three inches In size, but one outstanding single crystal is nearly .two feet in width. Cheek to jowl with the amazonite crystals are large spodu-mene and beryl crystals. The beryls are either a pale peach color, or a light blue. Both the peach and aqua­colored beryls display the rather flattened tabular shape more typical of morganite. Although the spodumene and beryl crystals are generally shattered and opaque, Mr. Warlick has recently recovered a nice 4 Inch long. tabular, aqua crystal with several gemmy sections. At least one sizable open pocket has been discovered toward the core of the McHone pegmatite. Perhaps, upon further mine develop-ment, more perfectly crystallized spodumenes, beryls, or fluorites will be found.

Actually, the amazonite, spodumene and beryl crystals aren't the piece de resistance of this crystalline pegmatite smorgasbord. Included in the jumble of quartz, feldspar, mica, beryl and spodumene Is a most unusual variety of fluorite; chlorophane. The distinguishing characteristics of chlorophane are its phosphorescence and thermoluminescence. Expose a piece of McHone Mine chlorphane to strong visible or ultraviolet light, extinguish the light, and In the dark you will see a distinct bluish afterglow that lingers for several minutes. Although chloro­phane phosphorescence is interesting, I find its thermoluminescence even more remarkable. Put a fragment on the coil of an electric range. turn on the heat, and in a few seconds the mineral begins to glow an eerie bright bluish color. The thermoluminescence is so intense that the glow is obvious even in broad daylightl If heated for only 10 or 20 seconds. a single piece of

February 2004

/

Petrograph 5

MAIL - E· AND OTHERWISE (continued)

chlorophane will thermoluminesce many times ove~. Eventually, repeated heating destroys the ability of the chlorophane to glow its eerie blue. The general conclusion of scientists who have studied chlorophane fluorite is that the luminescence Is a result of trace amounts of rare earth elements (yttrium, terbium, holmium, erbium) present in the mineral. A precise explanation for this thermoluminescence is stili unavailable.

A further remarkable aspect of McHone Mine chlorophane Is Its color. In sunlight it displays a rather ordinary light bluish-gray color. Viewed under tungsten light, the chlorophane shows a distinct reddish hue. Under fluorescent light the mineral appears a grayish-green color. This color change is similar to the appearance of alexandrite when viewed under tungsten vs. fluorescent light.

To this collector's knowledge, chlorophane has not been reported to occur in any of the other pegmatites in the Spruce Pine area. The classic U.S. locality for chlorophane fluorite is the Morefield pegmatite at Amelia Court House Virginia. The chlorophane from that locality' was never abundant and is no longer available to collectors. Fortunately, the McHone Mine chlorophane is actually fairly abundant (at least in this small pegmatite). Nodules of chlorophane extend for several feet through the core of the pegmatite. Most nodules are five to ten inches in size and largely shattered. But don't worry; large gemmy chlorophane frag-ments are being recovered. Those fragments can be faceted into unique collector's gem-stones. Recently, I fashioned two gemstones of approximately 4 carats each. I like to cradle the stones in my hand and watch them glow in the darkl

If you would like to see these faceted gem­stones, or learn more about the McHone Mine I invite you to visit my web site ' (http://www.mtlilygems.com). Unfortunately the Chalk Mountain Crystal Mine was closed to' visitors after Labor Day, 2003.

Submitted by Bob Drummond, SAMS Spruce Pine, N.C.

Petrograph 5

V'INTA 6 £.EiEM OF TH£ MONTH Shirley Buschlre

February 2004

He was born in Gridley, grew up in Yreka and finally settled in Susanville. He is a twin. He served in the Army Air Force in World War II joining the army as a teenager. He eventually became B29 crew chief. This training proved very useful for he was able to work in the aircraft industry when he got out of the service. In 1945 he married his school sweetheart and they have been married for over 57 years. They have three children, eight grandchildren and 24 great grandchildren.

After a few years he became a line foreman and decided he would go into business for himself. He found a partner and they opened an aircraft accessory overhaul company whloh they operated until they retired and sold the business in 1994.

Our gem joined in 1974 when the club had a shop in Castro Valley but business became so busy he had to withdraw and he rejoined about 16 years ago. Since that time he has been very active In the club. He has been president for two years and is currently serving as past president.

He became shop foreman shortly after the time the club found they had to move. He directed the building of the new shop with the help of several members. Some day an archeologist will be very perplexed when he checks the site of our gem's homestead, for many of the debris rocks were tossed as fill for his swimming pool.

He also graciously stored much of the usable material and equipment in his garage and store room while the new shop was being built. Saved us a bundle in rental fees.

Our gem's favorite lapidary task is faceting although he has tried just about everything. He has taught faceting, too. His favorite stones are opals and turquoise. Oh, he also has strung beads and he is almost as good at it as his wife who has just recently decided to try her hand at making wire trees. Doc and Arland are in charge of the raffle so pick up your tickets from either of them.

February 2004

Petrograpb 6

VINTAGE GEM OF THE MONTH (continued)

Arland is an avid hunter and fisherman. He has several hobbles Including crocheting and basket weaving, which he started when his physician said he had to learn to do something with his hands to keep his fingers nimble. His wife Margery says he has made close to 100 afghans for family and friends. He showed off some of his pine needle baskets at a recent meeting.

Larry said the old timers always come through and this Is especially true of this couple.

Fern Brown, Librarian

The following books are now In the library for our members' use:

Hopi Sliver: The History and Hallmarks of Hopi Silversmlthing by Margaret Nickelson Wright, in memory of Tom Barnes.

A Thorough and Accurate History of Genuine Dlamonds/n Arkansas by Glenn W. Worthington, In memory of Larry "Ozzie" Osborne . .....................

r:II:L() T~II)§

(For the most current field trip informal ion, check the bulletin board althe Shop. - Ed. )

Education Shirley Bm,chke

Cathy Paonessa has suggested we have a bead sub group meeting upstairs

at the shop about once a month? Anybody interested? Call me or leave you name at the

Petrograph 6

February 2004

shop. See the faceting door for sign up.

It looks like are hard rock carving class will be held after the show, probably on a Sunday. other classes as in the past.

11111111111111111111111 Tlia.ni Youf

Our thanks to the following for providing refreshments for the

January meeting:

AnneMarle Kochendorfer Janice Garcia Jim and Mary Button Karl & Nlkl Churchill Diane & Mike Alves Arland Stokes Rita Frazier

Frograms Mary Howell

The speakers for upcoming meetings are scheduled to be

February: Jeff Seitz of CSUH, accompanying the scholarship awardees, will speak on the Hawaii project for the CSUH Geology department.

March: Mary Howell on her trip to Egypt.

April: John Stockwell will speak on thunder eggs.

May: Bill Belriger will speak about sand.

~-.~-----.-~-------.-~- - -----------­-~--------------------------------

More than 50% of the people of the world have never made or received a telephone call.

Opportunities always look bigger going than coming.

Febnlary 2004

, )

Petrograph

)

Petrograph

7

Minerals & Gem Society Castro Valley

Sign-ups for 2004 Show Pl •••• fill In houra .nd days that you are able to work

February 2004

NAME: ________________ __ PHONE: __________________ __

Job o..crlptlon Wedn ••• Thuraday Friday S.turday Sunday (Duty toura will be 2 hours, day 3/3 March 4 March 5 March 8 March 7

Set.Up e-am e-am "'''''''''''''''' "'","'","'. . "'.", "'",

Tear..l)own "'''''''''''''''' * * * ~~ * . "''''''''''. ."'.", .. a-pm

Skirting Tabla. '-am eam-1pm ."'."''''. "' ... "'''' "'''''''.'''''' S.curity "'''''''''''''- 1-pm ...

Admlulonl (Front window) "'''''''''''''''' .. "'''''''''' HO'pltallty Table .. "'''''''''' *._***

Demon.tratora "'''''''.'''''' .. "'''' ... Lobby Sal.. (Country Store) "'."'''''''''' "''''.''''''. RamaTabl. "''''''''''.''' ."''''''''''.

M.mberahlp Tabl. . ' .."'''''''''' ....... Information Booth "'''''''''''''''' *** •••

School Guld •• "' .. "''''''' "'."'''''''''' "' .... '" "'''''''*'''.

Main Kitchen "''''*''''''. DInner

DinIng Room *"'*"'*'" Dlnn.r

Small Kitchen (Crew) (Crew)

Snack B'.r "'''''''''''''''' ",,,,,,,,,, ... Bak.d Good. "'''''''.-'''

Man to: Or call

Bonnie Andrad., 15608 Cranbrook St, San Le.ndro, CA 94579·221£' 1 (926) 625-4393 (Ev.nlngl are belt tim. to reach her)

7 February 2004

,Petro graph 8

16 Ways to a Good Show

1. We need four or five pickups at Doc's (Thornton Ave, Newark) to transport stored Items to the shop or Centennial Hall, as directed.

2. Be at the shop on Sunday Feb 29 to help load the big truck

3. Be at Centennial Hall to help unload the truck

4 Help with skirting tables, probably starting Tuesday.

5. Donate' baked goods for sale (look for baking mixes on sale).

6. Enter an exhibit case. Call Norm Hodgson for more Information. The club has cases you can borrow. Exhibit set-up is Thursday.

7. Contact Bonnie Andrade to sign up for a work shift at the show. This helps us know where we have needs. If you can't contact her, come anyway and we will find a place for you.

B. Donate something for the auction or door prize and save some of your money to spend at the auction.

9. Sell and buy tickets for the raffie.

10. Come to the show. Check with Information booth for your assignment.

13. Stick around after the show to help with take down .

14. Show up Monday at the shop to help put stuff away for next year.

We especially need help on Friday and In the kitchen. --~ ",S\(J--~ .. ~--~. ,.~.».-~ i-)i!

It's a meaningful life - it Just takes practice. Dalai Lama

To know the road ahead, ask those coming back. - Chinese Proverb

Remember a sense of humor does not mean that you tell him jokes. It means that you laugh at his.

Petrograph 8

February 2004

Synthetic Corundum History From Facets, via the Glacial Drifter (Edited/or space considerations ·-b"'d.)

During World War II, small- ball bearings were made from synthetic corundum, a development of the Swiss jewel industry. Sizes from 1/4 mm to 2 mm were regularly produced. Larger sizes were made to order with minimal size variance.

These bearings were also used In the better grades of ballpoint pens in the 40s and 50s, and replaced the old steel and other metal needs for phonographs and other recording instruments. The corundum ball was more effective in recording and producing sound, and produced less wear on the record Itself. .

Various types of dies and styluses were also made. Large quantities of the synethetic material was used as bearings in watches, chronometers and similar instruments.

In addition to being far harder than steel ball bearings, the corundum spheres had many advantages, they had high elasticity, great chemical and physical stability, low thermal expansion and were non-magnetic. Corundum bearings could be run safely for long periods without any lubrication.

Prior to World War II almost no synthetic corun­dum was produced in the US. Nearly all of it was imported from Germany and France, and at the outset of the war, a serious shortage existed. Linde Air Products Company, after considerable research and cost, were able to produce a corundum boule that was much larger than the European product and of far better quality.

Linde went even farther. They manufactured corundum in rods and other shapes, something that had never been done, at least commercially. These rods found wide application: they could be heated and bent Into various shapes; for example, into a loop, used in the textile industry as a thread guide. Metal loops wore out when thread passed through them at high speed, but the corundum loop would last indefinitely.

Later, Chatham produced synthetic ruby used in the heart of a highly sensitive master amplifier developed by Hughes Aircraft for the army.

February 2004

-1

Petrograpb 9 February 2004

An Invitation to Members and Friends of MGSCV

We invite you to exhibit at our show, March 5, 6 and 7, 2004 at Centennial Hall, 22292 Foothill Blvd. Hayward, CA.

If you would like to exhibit but do not have or are unable to bring your own case, we will provide a standard upright case with lights, but no liners or risers. Show set-up time is from 3:00 p.m. to 7:00 p.m. Thursday, Maroh 4, 2004. We will provide dinner at about 6:30 p.m.

Your Name

Your Address

City _________ _

Member of

I will exhibit cases. Please indicate number

2004 Show Exhibit Application

Phone ( ) Please include your area code.

I will not exhibit ___ _

Please indicate whether you will be entering this case in competition.

Exhibit only 0 Competition o I have a case. Upright _ _ _ Slant front __ _

Case dimensions: H _ ___ W ____ 0 ___ _

I want to borrow a club case (4-ft. upright, liners or risers not included) _ __ _

Wattage limitation on ALL ca8e8: 150 watts total. No halogen lights - heat/fire hazard.

Please describe the material to be exhibited, i.e., carvings, fossils, jewelry, minerals, etc.

24-hour security will be provided; however MGSCV assumes NO responsibility for any loss or damage to exhibitor's property.

Your cooperation in returning this form AS SOON AS POSSIBLE indicating whether or not you will exhibit will be appreciated. Piease return to the address below. Confirmation of your application to exhibit aiong with your space number(s) will be sent at a later date, after all applications have been received

Petrograpb

Norm Hodgson, Exhibit Chairman Mineral and Gem Society of Castro Valley

Post Office Box 2665 Fremont, CA 94536

9 February 2004

)

SHOP SCHEDULE Monday - 10 AM -1 PM Lapidary

7 pm- 9 pm Beginners only In Lapidary

Tuesday8 -9 AM - 1 PM Lapidary 7 PM - 9 PM lapidary; L08t Wax; Library open 7 - 9 p.m.

Wedne8day - 9 AM - 1 :30 PM lapidary; Inta.rsla; Beading; Library open 10 a.m. -12 noon 5 PM - 8 PM lapidary

Thursday -10 AM -1 PM Lapidary 4 PM - 9 PM lapidary

Friday -10 AM - 2:30 PM Lapidary 7 PM - 10 PM Lapidary

Saturday - 9 AM - 6 PM Juniors; adults with 8upervlsor'8 approval

NOTE: The Shop Is for the u8e of MGSCV members only

PETROGRAPH

Bulletin of the MINERAL AND GEM SOCIETY OF CASTRO VALLEY, INC. Cheryl Archer, Editor P. O. Box 2145 Castro Valley, CA 94546

DATED MATERIAL - TIME VALUE

Cheryl Archer

Oawlter Saklan

Our Shop: 20948ACorsair Blvd Hayward, CA 94545

610-887 ·9007

Telephone: (610) 887·9007

PRSRTSTD U.S. POSTAGE PAID .00 MAILED FROM ZIP CODE 94580 PERMIT NO. 42

21003 Wilbeam Ave. Castro Valley, CA 94546

)