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Post by fernwood on Aug 15, 2017 5:48:50 GMT -5
Finally got (hopefully) positive ID on this. Found in Central WI. Malachite with Hematite, Azurite, Copper, Quartz and Opalization. Trace amounts of Iron and other minerals, including Obsidian. Attributed to area volcanic and/or glacial activity. And here I just thought it was very unique. Malachite is very rare here, as is Azurite, Copper and Obsidian. This stuff does not photograph well at all. Thinking it would crumble if worked, so just a specimen.   |
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,723 
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Post by Fossilman on Aug 15, 2017 9:18:14 GMT -5
That is some very nice material.... Green was always an attraction to me with rocks or anything else for that matter....
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Post by fernwood on Aug 15, 2017 10:24:59 GMT -5
VEry limited green here. In NW WI it is abundant with all the copper there.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 18, 2017 21:22:12 GMT -5
Who did that rather detailed identification?
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Post by fernwood on Aug 22, 2017 3:29:54 GMT -5
Local geologist who had seen it in person had done the prelim one. He sent my previous photos to another geologist friend.
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