Post subject: Gemstone Deposits in the United States
Posted: Tue Mar 31, 2009 10:51 am
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Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
In how many states have diamonds been found?
Which states have produced diamonds commercially?
The gem material produced in the US having the greatest overall value is ?
What does cause the color in pink tourmaline?
Get these answers and more when Gemology and Mineralogy meet at:
Gemstone Deposits of the United States by Pete Modreski of the USGS
Modreski is the United States Geological Survey’s Geologic Resource Specialist on Gemstones. Pete's Doctorate in Geochemistry has allowed him to contribute both to the gem and mineral worlds. He co-authored “Minerals of Colorado”, is a Research Associate in the Earth Sciences Department of the Denver Museum of Nature and Science, and is an Executive Editor of the Rocks and Minerals magazine. This evening will help you brush up on geological formations and their impact on the gems we find.
You need this lecture! We’ll see you there and bring a friend. Have a favorite mineral specimen? Bring it for show and tell.
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
For those who can not attend the actual presentation, it will be very similar to this one (which inspired us to invite Dr. Modreski to come in person)
Click here
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