It is with great sadness I'd like to announce Dr. Hanneman passed away on December 12, 2020. His legacy will live on forever!
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PostPosted: Sat Sep 16, 2006 12:45 pm 
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Joined: Mon Oct 17, 2005 10:56 am
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Location: The frozen north prairie :-/
Dr. Barbara -- :smt033 Thank you, thank you, thank you!!! I finally understand what the plus and minus signs mean for ions! I hope when I reach the crystal system section of your lessons I'll finally get a grip on those as well! [-o<


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PostPosted: Thu Nov 15, 2007 4:58 pm 
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Gemology Online Veteran

Joined: Mon Jan 15, 2007 6:48 pm
Posts: 835
Location: florida
HI All

i found another resourse for gemstoneswith review questions on it

www.geology.iupui.edu/academics

its GEOLOGY G130:GEMSTONES Fall 2001

if your looking for review questions :wink:


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PostPosted: Mon Sep 08, 2008 5:06 pm 
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Gemology Online Veteran

Joined: Mon Jan 15, 2007 6:48 pm
Posts: 835
Location: florida
Hi

i found these site while searching for gemstone info , lots of great articles written here


http://www.jjkent.com/articles/index.htm

check it out :wink:


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