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Unknown Mineral Specimen Help

Posted by Anonymous User  
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Anonymous User March 03, 2012 04:14PM
Hi.. I picked up this specimen from an old collection an unfortunately it had no label with it.. Been doing some research but could not find anything similar to it. If anyone out there can help with ID and local, it would be greatly appreciated.. thanks.. Teresa :-S
open | download - feb509ub.jpg (126.6 KB)
open | download - feb509ud.jpg (149.8 KB)
open | download - feb509uf.jpg (99.2 KB)
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José Zendrera March 03, 2012 04:41PM
Hi Teresa,
Please read first thread in this section and give more data: hardness, streak, crystal shape, etc. Also a close up photos will help. We wait for your news...

Jose
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steven garza March 04, 2012 05:31PM
Dear Teresa;

I can say that the clear xls are probably quartz & the pinkish-white ones are probably calcite or a similar carbonate; however, the black blades, bcs there is NO locality, could be ANYTHING. I'm afraid, even taking Jose's advice, that without someone performing some chem tests, those will remain a mystery. I would also want to know what the small white needles, amongst the calcite(?) xls are; they COULD help target a locality, which would key what the black xls are.

Here's another test you might try, if you can obtain a short wave UV; see if the calcites fluoresce, &, what color they do.

Your friend, Steve
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