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Return to the Rockhound Rambling Center. The Ventura Gem & Mineral Society, Inc. (VGMS)
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| July: | |
| 20-21, | Greenhorn Mountains, |
| Leader: Jerry Adlof. | |
| August: | |
| 7-31 to 8-11, | County Fair. |
| September: | |
| 8/31-9/2, | Monte Cristo Mountains (NV) area, |
| Leader: Ron Wise. | |
| 8-14, | Camp Paradise-1. |
| 15-21, | Camp Paradise-2. |
| October: | |
| 12-14, | Cady Mountains area, |
| Leader: Miriam Tetreault. | |
| November: | |
| 2-3, | OGMS Show. |
| 28-12/1, | Wiley's Well area, |
| Leader: Mitty Scarpato. | |
| December: | |
| Holidays. |
| Leaders: | ||
| Jerry Adlof, | 579-7343 or 583-5242, | Conejo. |
| Lew Mayron, | 492-2458, | Conejo. |
| Mitty Scarpato, | (818) 707-9972, | Conejo. |
| Miriam Tetreault, | 642-5779, | Oxnard. |
| Ron Wise, | 647-4393, | Ventura. |
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Marie and I just finished a 6000 mile trip around the Western States and thoroughly enjoyed every bit of it. The weather was great and we had no car trouble which helped a lot. We went as far south as Houston, Texas to visit a friend in a nursing home, to Monroe, LA to leave some items in a museum (I took my navigation training there in WWII and later returned as an Instructor), then to Branson, MO to see some shows, to Milwaukee, to Lincoln, NE to visit relatives, and back home through Kansas, Colorado, and Arizona. Of special interest to rockhounds was Kartchner Caverns, 50 miles South of Tucson, the Sternberg Museum (mostly fossils) in Hays, Kansas and the National Mining Hall of Fame and Museum in Leadville, Colorado. All three of these are really great and well worth visiting whenever you are in the vicinity. Kartchner Caverns is a newly discovered cave that has been open to the public for only the last two years. Arizona State Parks is doing an excellent job of letting us see the cave but still protecting it from damage by the public. The Sternberg Museum is an excellent display of fossils both animals and plants and the story they tell of our prehistoric past. The Mining Museum has an excellent display of over 1000 minerals and the story of mining and the many people involved in mining history. A word of caution, Leadville is in central Colorado at an elevation of over 10,000 feet. I grew up in Nebraska during the drought and depression of the 1930's and the drought we are all experiencing now reminds me very much of conditions at that time. The drought was worse then but this one covers a wider area. Fire hazards are much worse now so that all of us should be careful.
Wayne Ehlers.
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Ladies and Gentlemen: Start Your Tumblers!
With 7 months to go before we open the gates, our 2003 Show may seem a long way off, but some things take time. Rock polishing, for example. Nancy and I have just dusted off our old rock tumblers and filled them with the first of what we hope will be several loads before it's showtime. It can take as much as a month to run a single load through the various grits, so now's the time to start! If you have a tumbler, we encourage you to pull it out, oil its bearings, and start it up. If you need grits or rocks, Nancy and I have plenty to provide (especially lots of agates and jaspers), or you can look through the ample offerings of the club rock pile. We need tumbled stones for grab bags and for prizes at the Kids' Activities booth.
In addition to tumbling, set aside a corner of the garage or a closet to start stockpiling other items we'll need: donations to the Country Store, quality materials for the silent auction, Spinning Wheel and other prizes for the Kids' Activities tables, etc. If you're planning to attend any other rock shows this summer and fall, please pick up a supply of our Show flyers to leave on the hosting club's hospitality table (Ray and Florence took some to the CFMS Show, and we'll have some at the Ventura County Fair). And finally, start thinking how you'd like to contribute to this year's Show. Once summer fades away, we'll start holding Show meetings this fall, and the more hands involved the easier it all goes and the more creative and fun the Show. It's never too early to get involved! In the meantime, here's wishing everyone a great summer!
Jim Brace-Thompson, Show Chair.
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Minutes of the VGMS Regular Monthly Meeting,
Wednesday, June 26, 2002:
The regular monthly meeting of the Ventura Gem and Mineral Society was called to order by President Greg Davis at 7:35 pm on Wednesday, June 26, 2002 in the Bijou Room of the Lexington, 5440 Ralston, Ventura, Ca. The group was led in the salute to the flag.
The May regular meeting and board meeting minutes were corrected and then m/s/p as shown in the bulletin. Guests were introduced and welcomed to the meeting.
It was announced that the July board meeting will be held on the 11th and all are welcomed.
I'd like to thank Kathryn Davis for filling in for me at the last meeting and on such short notice.
Kathryn next introduced our guest speaker, Robert LaPrad and a slide presentation on gem and diamond cutting. It was an outstanding program on the mining, identification and finished results of diamonds. The slide show along with an in depth question and answer session was very educational and enjoyed by all.
Board member Shirley Layton reported that bulletin articles will be due by the 11th due to the Holiday and change in board meet date.
Jim Brace-Thompson reported that 12 members attended the field trip to Tajiguas beach and collected interesting concretions with crystals.
Emma Mayer had a last minute program change for the pebble pups this evening at 6:30 with a video presented instead of the scheduled demonstration. She also reported that the breakfast at her house went very well with plenty to eat for everyone.
Ray Meisenheimer reminded us that the County Fair is just around the corner and final prep for case entries should be performed. He also announced that Dave Mautz was recognized by the Ventura County Fair Board and presented with a plaque for service and contributions over the years.
Susan Mulqueen offered to coordinate a VGMS display case for the County Fair and Wayne Ehlers spoke about his and Marie's recent vacation which included 6000 miles and stops in Leadville, Co. and Ketchner Caverns in Arizona just to name a few sites. We may persuade Wayne to present a slide show on the trip.
Richard Bromser gave the treasurers report.
Door prizes were presented to a lucky few, tumbled rock was offered to pebble pups and refreshments were provided by Sharon Cuningham.
There being no further business, the meeting was adjourned at 9:00 pm.
Respectfully submitted, Greg Davis.
Minutes of the VGMS Board Meeting,
Thursday, July 11, 2002:
The regular board meeting of the VGMS was called to order by President Greg Davis at 7:36 pm on Thursday July 11, 2002, at the VGMS museum, 5019 Crooked Palm Rd., Ventura, Ca.
Present: Greg Davis, Jim Brace-Thompson, Richard Bromser, Shirley Layton, Bob Spjut, Inez Shakman and Steve Mulqueen.
Greg Davis: Our salute to the American flag during regular meetings will remain the same until further notice. There should also be a sign up sheet for volunteers at the County Fair at our next meeting. Purchase of a dumpster for clean up of the museum area will be put on hold and possibly a work crew can dispose of it if not Petrochem. I returned a phone call to a Don Stehsel and have arranged for the pick up of mineral specimens he intends to donate to the three county clubs. More info will be forthcoming.
Jim Brace-Thompson: Will start to motivate people to start planning for our next show, including tumbling rock and distributing flyers at the County Fair. Jim hopes to start show meetings in the fall.
Richard Bromser: Passed out copies of the treasurers report which included checks 937-940 used for utility expenses.
Shirley Layton: Deadline for the next bulletin will be July 12. Our bulletin has been nominated for CFMS Bulletin of the Year and if successful it's on to AFMS. Way to go everyone!
Inez Shakman: Really enjoyed a rock hunting trip to the Blue Forest with Red Jioras and others during the month of June. Maybe she'll share the adventure with all of us during a regular meeting.
Steve Mulqueen: Had the insight to respond to the estate liquidation of the late Mrs Meyers of Oxnard and provided the club with some really nice mineral specimens. Thanks Steve for your time and effort. Steve and Susan were also present for another estate liqidation in California City and provided our club with many Gem and Mineral magazines. A fossil display at the Santa Paula Oil Museum will begin the weekend of the 13th and was provided by our own Dave Mautz. Steve also visited a newly discovered dino track field in Utah and will provide club members with more information in the near future.
There being no further business, the meeting was adjourned at 8:45 pm.
Respectfully submitted, Greg Davis.
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The photos on the Photo Album page are of this most interesting find. Steve Mulqueen and members of the Pacific Desert Rats discovered and visited this site on a recent outing. It is located in St. George, Utah and appears to be something to add to your own agenda. The website is http://www.dinotrax.com/.
At the Johnson Farm dinosaur track site you will see some extraordinary and very rare dinosaur tracks and other evidence of an age between 200-205 million years ago. This age is included within what scientists call the Early Jurassic Period. During this time, the land in this location was at or near sea level and much nearer the equator. Streams and lakes once covered portions of southern Utah and northwestern Arizona and deposited the rocks we see today. The specific rock formations represented here are within the Moenave Formation. The Moenave Formation contains sequences of sandstone, mudstone, and shale. The Moenave overlies the Upper Triassic Chinle Formation and underlies the Lower Jurassic Kayenta Formation that forms the red cliffs above St. George.
While the Moenave formation was being laid down in Southern Utah, a vast desert similar to the modem Sahara covered Utah to the north and east of St. George forming what today are the massive cliffs of the Wingate Sandstone. The Wingate formation is characteristic of the San Rafael Swell, Moab, Capital Reef, and the Lake Powell regions.
The Johnson Farm track site includes not only the common impression tracks found in other locations in this area but also a large number of spectacular track casts. As the water around the lakeshore area was receding, thick mud along the shore began to dry. When the animals came into the area to eat and drink, their footprints in the mud were preserved. The mud continued to harden forming mud cracks around the tracks. Salt crystals formed in the mud. Eventually rain flooded the area temporarily scouring away some of the dinosaur tracks and exposing and dissolving some of the salt crystals.
Other dinosaurs walked on this new surface. Finally as the lake level rose, a thick bed of sand buried the surface. Over time, this sand hardened into stone and became the sandstone layer that we see today preserving the dinosaur tracks casts. They are literally natural casts of the dinosaur foot. The ripple-marked surfaces within and at the top of this sandstone bed reflect the waves on the shore of this lake and the tracks across these layers indicate that this lakeshore continued to provide a good habitat for meat-eating dinosaurs.
At this site there are at least five different types of footprints that are still waiting for proper identification by researchers. Three tracks have been identified and they are the Eubrontes, Grallator and Batrachopus.
Contributed by Steve Mulqueen.
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To clean pyritized fossils don't soak, but just dip a toothbrush in #2 Sparer solution and scrub very carefully. Muriatic acid sometimes ruins this type of fossil. - From Breccia 8/99 via Moroks Newsletter 3/02.
To clean fern fossils do not use wax, shellac, varnish, lacquer or spray plastic. These items cannot readily be removed and destroy forever the fine surface detail. Museums use yellow dextrin. Mix a tiny bit of the dextrin with water to the color of tea and paint it on the fern itself, not the matrix. Get yellow dextrin, not white. - From Petrograph 4/89 via Moroks Newsletter 3/02.
Mineral oil uses: It is an excellent cleaner for selenite crystals. Fine for preserving borax crystals from hydration changes, and makes varascite a deeper green. Improves the appearance of fluorites and calcites. - From Moroks Newsletter 3/02.
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* * * * * * * * * * * * *
Senior Moment: God, grant me the senility to forget the people
I never liked anyway, the good fortune to run into the ones I
do, and the eyesight to tell the difference.
* * * * * * * * * * * * *
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AUGUST 3-4; ARROYO GRANDE, CA - Central Coast Treasure Hunters Assoc., 15th Annual Treasure Hunt, Brush Poppers Arena. John (805) 489-1079 or Frank (805) 438-3125.
AUGUST 9-11; NIPOMO, CA - Orcutt Mineral Society, St. Joseph's Church, 298 S. Thompson Avenue. Hours: 10-5 daily. Dick Shields (805) 937-0357. e-mail; Shieldsb@ix.netcom.com.
AUGUST 17-18; SAN FRANCISCO, CA - San Francisco Gem & Mineral Society, Fort Mason Center's Herbst Pavilion, Marina Blvd. & Buchanan Street. Hours: Sat. 10-6, Sun. 10-5. Ellen Nott e-mail; ellennnt@yahoo.com.
AUGUST 30-SEPTEMBER 2; FORT BRAGG, CA - Mendocino Coast Gem & Mineral Society, Town Hall, Main & Laurel. Hours: Fri. - Sun. 10-6, Mon. 10-4. Don McDonell (707) 964-3116. 643 N. McPerson, Ft. Bragg, Ca 95437.
SEPTEMBER 20-21; REDWOOD CITY, CA - Sequoia Gem & Mineral Society, Community Activities Bldg., 1400 Roosevelt Ave. Hours: 10-5 both days. Carol Corden (650) 776-5990.
SEPTEMBER 21-22; FONTANA, CA - Kaiser Rock Club, California Speedway; 9300 Cherry Ave. Hours: 9-5 both days. JoAnn Watson (909) 355-7455.
SEPTEMBER 21-22; PASO ROBLES, CA -Santa Lucia Rockhounds, Pioneer Museum, 2010 Riverside Ave. Hours: 10-5 both days. Harry Kuffel (805) 467-3457. Harrykuffel@hotmail.com.
SEPTEMBER 28-29; DOWNEY, CA - Delvers Gem & Mineral Society, Inc., Woman's Club of Downey, 9813 Paramount Blvd. Hours: Sat 10-5, Sun. 10-4. Chuck Pierce (714 526-5614 caseychuck@att.net.
SEPTEMBER 28; LOS ALTOS, CA - Peninsula Gem & Mineral Society, Rancho Shopping Center, Foothill Expressway and Springer Rd. Hours: 9:30-4:45. Grank Dina (650) 967-3424.
SEPTEMBER 28-29; MONTEREY, CA - Carmel Valley Gem & Mineral Society, Monterey Fairgrounds, 2004 Fairgrounds Road. Hours: Sat. 10-6, Sun. 10-5. Sky Paxton (831) 663-6978. E-mail: sky@familystones.net OR Janis Rovetti (831) 657-1933. E-mail: fjrovetti@aol.com.
OCTOBER 2-13; FRESNO, CA - Fresno Gem & Mineral Society, Big Fresno Fair, 1121 S. Chance Avenue. Hours: 11 a.m to 10 p.m. Newman Gill (559) 841-7765.
OCTOBER 5-6; VISTA, CA - Vista Gem & Mineral Society, Brengle Terrace Community Recreation Center, 1200 Vale Terrace. Hours: 10-5 both days. Mary Anne Mital (760) 758-4599.
OCTOBER 12-13; TRONA, CA - Searles Lake Gem & Mineral Society, Gem & Mineral Show Building, 13337 Main Street. Hours: Sat. 8-5; Sun. 8-4. Bonnie Fairchild (760) 372-5356. Web page - http://www1.iwvisp.com/tronagemclub/.
OCTOBER 12-13; ANTIOCH, CA - Antioch Lapidary Club, Contra Costa County Fairgrounds, 10th & L Streets. Hours: 10-5 both days. Dave Zabaldano (925) 516-0651. davez@cctrap.com.
OCTOBER 19; CANOGA PARK, CA - Woodland Hills Rock Chippers, Canoga Park Community Center, 7248 Owensmouth Avenue. Hours: 10-5. Thalia Goldsworthy WWROCKShow@aol.com.
OCTOBER 19-20; WHITTIER, CA - Whittier Gem & Mineral Society "Rocks in Our Back Yard" the 53rd show, 7630 Washington Ave. (Corner of Mar Vista and Washington Ave.) Hours: 10-5 both days. Jay Valle (626) 934-9764.
OCTOBER 19-20; EL CAJON, CA - El Cajon Gem & Mineral Society. El Cajon Valley Masonic Hall Association, 695 Ballantyne. Hours 10-5 both days. Mikki Santens (619) 440-3201.
OCTOBER 20; FALLBROOK, CA - Fallbrook Gem & Mineral Society "Fall Festival of Gems", Fallbrook Mineral Museum, 123 W. Alvarado Street. Hours: 10-4. Karen Dawes & Mary Fong/Walker (760) 728-1130 e-mail fgms@att.net.
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COMBINED NWF/AFMS,
July 16-21; Port Townsend, WA.
MIDWEST FEDERATION,
October 4-6; Springfield, IL.
SOUTHEAST FEDERATION,
October 5-6; Jacksonville, FL.
AFMS/CFMS SHOW - 2003,
June 5-8; Ventura, CA,
Del Air Rockhounds,
Seaside Park (Ventura Fairgrounds),
10 W. Harbor Blvd.,
Brad Tanas (818) 886-7190 ohmarin@earthlink.net.
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Just for the record any unsigned articles are by the Editor. Thanks to everyone for their contributions and we look forward to a lot more from other members!! (That is a broad hint!!)
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| Trili - The Editor's Pet Trilobite. |
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Definition of the Month.
Cinnabar:
The primary ore of mercury, consisting of mercury sulfide, HgS. A mineral of the rhombohedral crystal system which often exhibits a hexagonal crystal habit. Cinnabar occurs in brilliant red acicular crystals or in red, brown or gray masses in veins and in alluvial deposits. The mineral's occurrence in veins is often associated with serpentine. In some deposits, quicksilver, the liquid metal in its elemental form, occurs in fractures within the cinnabar ore body.
Caution: Mercury ores and quicksilver, are hazardous because of the toxic nature of the compound, the element and its vapors. Use caution when handling cinnabar. Wash your hands after touching the mineral and the metal. Avoid cutting and polishing a rock which is known to contain even trace amounts of the mineral.
Source: "A Glossary of the Mining & Mineral Industry" Bulletin 95, by Albert H. Fay, Dept. of Interior, U. S. Bureau of Mines, Government Printing Office, Washington, D.C., 1920.
The "Definition of the Month" features key words which are related to geology, paleontology, mining and desert history. Anyone who wishes to submit a definition for next month's bulletin, please see me.
Written by: Steve Mulqueen.
Illustration of the Month.

"Flasking Quicksilver in the 1860s",
An illustration by F. Ralph Rambo.
The liquid mercury metal known as quicksilver was used extensively for gold extraction during the Gold Rush of California. After the discovery of gold in January 1848 at Sutter's Mill near Coloma, quicksilver demand increased dramatically. In the mid to late 1800s, the primary source for mercury was the cinnabar ores of the New Almaden mine located near the town of New Almaden in Santa Clara county, California.
The deposit at New Almaden was discovered in November of 1845. The process applied in the extraction of mercury from cinnabar involved the roasting of ore in a type of oven known as a "retort", the venting of sulfur into the atmosphere (in the form of sulfur dioxide) and the condensation of mercury vapors into liquid.
The liquid mercury metal, called "quicksilver", was then cooled and poured into flasks. A "flask" is a standard container for quicksilver which were iron bottles that held one unit or 76 1/2 pounds of the liquid metal.
Mining and processing the ores were hazardous work. Many miners and mill workers suffered and died from excessive exposure to the mercury.
In the gold extraction process, mercury was used in sluice boxes and amalgamation tables. Fine particles of crushed rock or sand and gravel that contained gold were washed over inclined copper plates which had a thin coating of mercury. Gold would adhere to the mercury and form an "amalgam", a gold / mercury mixture. This was then scraped from the copper plates. The metals were separated using a retort in a similar manner to the method the mercury ore was originally processed. The gold was sold for profit while the mercury was used again in the process.
The illustration is from: "Almost Forgotten, Cartoon Pen & Inklings of the Old Santa Clara Valley", a book by F. Ralph Rambo, 1964.
The "Illustration of the Month" will feature a drawing, sketch, pen & ink rendering or an engraving print found in old books, maps and manuscripts related to geology, paleontology, mining and desert history. Anyone who wishes to submit an illustration for next month's bulletin, please see me.
Written by: Steve Mulqueen.
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G is for . . .
. . . Galena. Galena is an ore of the metal lead. It is very heavy and is often very shiny. Minerals that look like shiny metal are said to have metallic luster. Galena is gray. |
![]() A single lead-gray galena cube on purple fluorite from Cave-in-Rock, Illinois. |
. . . Gypsum. Only a few minerals - like talc and graphite - are softer than gypsum. Because it is so soft it is easy to crush into a powder. This powder is heated and turned into Plaster of Paris. Gypsum is also used to make wall-boards for homes. When it is clear, it is given the special name selenite. Gypsum crystals were found in Mexico which were over 6 feet long! Gypsum can be colorless, brown, tan, green and white. |
![]() A gypsum crystal group from Poland. |
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This gypsum crystal is called a "Fish-Tail" crystal because it looks like the tail of a fish (hold it sideways for a better view!). |
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![]() 1) Largest track at site - Eubrontes. |
![]() 2) Tracks of Clawing. |
![]() 3) Johnson Farm Dinosaur Track Site area. |
![]() 4) Actual Track Site. |
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