November 2010


How Did Agates Form?
Explaining the mystery of their genesis
by Karen Brzys

Collecting Fluorescent Minerals
The phenomenon is no longer just a novelty
by Bob Jones

Take the Grandkids Rockhounding
Share your hobby with a new generation
by Lyle Koerper

Rock & Gem Kids
Kid-size articles, puzzles and prizes

Gemstones of the Zodiac
Astrology aligns stones and stars
by Bob Jones

Artist Profile:
Helen Serras-Herman
Her sculptures and jewelry reflect a passion for gems
by Andrew Herman

Climbing for Crystals
Learn the ropes to collect out-of-reach specimens
by Stuart “Tate” Wilson


All She Wrote
New Releases
by Lynn Varon

Craftsman of the Month
Wire-wrapped sea glass
by Marlene Amira Hoffman

Show Dates
Mark your calendar!

Shop Talk
Cabochon Findings
by William A. Kappele

Rock Science
Notes on Native Copper
by Steve Voynick

Picks & Pans
Museum exhibits, book reviews, hobby news

Off the Dop
Planning for Good Recovery
by Jim Perkins

Many Facets
Autumn Sun
by Jim Perkins

On the Rocks
Mineral Travels
by Bob Jones

Field Notes
Reader letters

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One Response to November 2010

  1. R. Paul Colburn on January 13, 2012 at 12:42 pm

    Re. Brzy’s Formation of Agates Nov. 7, 2010 artical, the process of water needing to go back out of a cavity after depositing chalcedony (agate)to get new chalcedony molecules then transport it back into the cavity to deposit a new band may not be necessary if the mechanism of diffusion is considered. I think it would be found that if one were to take two soda bottles and fill them with water, with one of them containing say two tablespoons of salt then seal them together with a rubber tube. Then set them down side by side for a day then empty both out in two separate dishes to dry. One tablespoon of salt would be found in each of both dishes. The water does not need to go out and grab more mpolecules of salt then transport them back into the other bottle. The salt molecules travel by diffusion alone into the other bottle until both bottles have equal amounts of salt. The water does not go anywhere. further, what takes place of the water in the cavity if it has to leave the cavity to go get more SiO2 molecules? A test of whether the water goes anywhere might be proved if the water molecules were tagged with a radioactive isotope of oxygen in the H2O molecules. There should be very little radioactive water found it the bottle where the salt was first dissolved. Diffusion is defined as molecules of one substance moving from from an area of high concentration to an area of low concentration. This may also be seen if a coloring agent were used instead of salt. Robert Paul Colburn Geolapidary Museum 6235 stirrup Rd. S.E. Deming, NM 88030