Friday, August 31, 2018

September 2018 Del Air Calendar of Events

Del Air’s September 2018 Calendar
Monday 03: Labor Day: Honor America’s Workforce                               Thursday 06: General Meeting: 7:30 pm in our regular meeting room.
Monday 10: 1st Day of Rosh Hashanah (begins @ sundown)
Wednesday 19: Yom Kippur (begins @ sundown)
Thursday 20: Board Meeting: TBD (info not available at press time)               Saturday 22: First Day of Autumn (maybe a reduction in the heat, too!)

General Meeting: Thursday September 06, 2018
The meeting begins at 7:30 pm in our regular meeting room at:
Northridge United Methodist Church - 9650 Reseda Blvd, Northridge, CA 91324  Guests are always welcome at our meetings and events however our annual Holiday Party in December requires a prepaid reservation in advance.

September 2018 Program:
Field Guide to the San Andreas Fault
Presented by: David Knight Lynch

David Knight Lynch received a B.S. in Astrophysics in 1969 from Indiana University and a Ph.D. in Astronomy in 1975 from the University of Texas in Austin. He specializes in infrared spectroscopy of comets, novae, supernovae, young stars and very old stars. Dave also works in the field of optics in nature (rainbows, mirages, etc.) and geologic mapping. Dave has held research positions at the University of Texas, Sacramento Peak Observatory, Caltech, UC/Berkeley, Hughes Research Laboratories and The Aerospace Corporation. He has published over 160 scientific papers and 10 books. He has organized 12 international scientific meetings. He is currently with the United States Geological Survey (USGS) in Pasadena, where he studies the San Andreas Fault. Back in the 70's, he was proclaimed "Frisbee Immortal" by the Wham-O company.

What is the San Andreas Fault? Where is it? How can I see it? What does it do to the landscape? Will an earthquake make California fall into the ocean? What risks does it pose? Should I worry about it? What towns lie on the fault? When is the "big one" coming? These and many other questions about the infamous San Andreas Fault will be discussed in an all color presentation. Topics covered include plate tectonics, continental drift, fault activity, the origin of volcanoes, the geologic future of California and much more.

Support our Hobby...Attend a Local Show...
September 15 - 16: CHICO, CA
Feather River Lapidary & Mineral Society
Silver Dollar Fairgrounds - 2357 Fair St.                     Sat 9:30 - 5; Sun 9:30 – 4 ;                                          John Scott, (530) 321-6331
The 79th CFMS Convention
will be held alongside of the
Feather River Lapidary & Mineral Society's
September 15 - 16: MONTERY, CA
Carmel Valley Gem & Mineral Society
Monterey County Fairgrounds
2004 Fairgrounds Road
Hours: 10 - 5 daily
Contact: Janis Rovetti, (831) 372-1311
September 15 - 16: REDWOOD CITY, CA
Sequoia Gem & Mineral Society
Community Activities Building
1400 Roosevelt Avenue
Hours: 10 - 5 daily
Contact: William Spence, (408) 398-7502
September 22 - 23: LODI, CA
Stockton Lapidary & Mineral Club
Lodi Grape Festival Grounds
413 East Lockford Street
Hours: 10 - 5 daily
Contact: Mike Mathis, (510) 301-3612
October 6: BORON, CA
Mojave Mineralogical Society
Boron Community Center
26998 John Street
Hours: 9 - 4 daily
Contact: Bruce Davies, (760) 338-8829
October 6 - 7: GRASS VALLEY, CA
Nevada County Gem & Mineral Society
Nevada County Fairgrounds
11228 McCourtney Road
Hours: 10 - 5 daily
Contact: Mitchell Frank Van Hecke, (530) 274-2425
October 6 - 7: VISTA, CA
Vista Gem & Mineral Society
Antique Gas & Steam Engine Museum
2040 North Santa Fe Avenue
Hours: 10 - 4 daily
Contact: Kelly Hickman, (760) 622-6501
October 13 - 14: TRONA, CA
Searles Lake Gem & Mineral Society
Gem Show Building
13337 Main Street (corner of Main & Trona Rd)
Hours: Sat 7:30 - 5; Sun 7:30 - 4
Contact: Jim & Bonnie Fairchild, (760) 372-5356
Visit for more show information

When sawing geodes, look for the largest dome on the specimen. This dome was in an
upright position while the specimen was formed. Saw through the largest dome and it is
likely you will get the best picture.      Via The Rock Collector

DO NOT buy jasper slabs that have been displayed in a pan of water for several days.
Some jasper will not take a good polish and one test is how quickly it dries. Touch the
stone with a drop of water. If it dries quickly, it is very porous and probably will not
polish well. If it has been submerged a while, the test will not work.      Via Rollin’ Rock

Algae and lichen may be removed from specimens by soaking the specimen in a
solution of ammonia and water.    Via anonymous

Diamonds are magnets for grease. The easiest cleaning procedure for a dazzling
improvement is to soak diamonds in vodka for a few minutes, rub with a soft toothbrush
and rinse in warm water.   Via Rock Chip Reporter
(I don’t think you drink the vodka afterwards......Bob D)

Used spongy fabric softener sheets are great for wrapping gems and fragile specimens
for storing or shipping. They can also be cut to size for liners in boxes.  Via Roc Toc

SAFETY HINT: Remember to sand wet whenever possible. We know that in most
cases dry sanding produces better results faster, BUT consider the hazards to your
health. Many of the materials that we work with are toxic or just plain poisonous. The
less dust we inhale, the better.     Via Nugget News