mitch1960 Posted June 7, 2014 Share Posted June 7, 2014 Found near N.W> of FT. Collins Co. Quote Link to comment Share on other sites More sharing options...
weaver hillbille Posted June 7, 2014 Share Posted June 7, 2014 (edited) streak test? any Kimberlite around? Edited June 7, 2014 by weaver hillbille Quote Link to comment Share on other sites More sharing options...
weaver hillbille Posted June 7, 2014 Share Posted June 7, 2014 or maybe Topazhttp://www.minerals.net/mineral/topaz.aspx Quote Link to comment Share on other sites More sharing options...
adam Posted June 7, 2014 Share Posted June 7, 2014 Topaz or calcite could be good candidates.... Quote Link to comment Share on other sites More sharing options...
fredmason Posted June 10, 2014 Share Posted June 10, 2014 there are known kimberlite type pipes in Colorado...try a diamond tester... Quote Link to comment Share on other sites More sharing options...
bosis73 Posted June 10, 2014 Share Posted June 10, 2014 what is it? weight of 2.5 kg. has not magnetic, metal detector responsible Quote Link to comment Share on other sites More sharing options...
Haderly Posted June 10, 2014 Share Posted June 10, 2014 basalt Quote Link to comment Share on other sites More sharing options...
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