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Identity HelpCan someone please help me identify this?

12th Nov 2019 19:50 UTCMonika Yost

07115750016023718784905.jpg
This was sold to me as Trollite.  I could not find anything in mindat about Trollite.  I did find some articles in google regarding Trollite but question the accuracy.  There seems to be some Mica in these and the blue may be blue tourmaline.  I cannot be certain.  The stones came from Pakistan. 
Thank you 

12th Nov 2019 20:22 UTCKyle Beucke 🌟

It looks like it might be secondary copper minerals (azurite and malachite?) in vein or altered rock that was polished. 


Kyle

12th Nov 2019 22:01 UTCThomas Lühr Expert

Monika, looking at your photo, my first thought was chrysocolla, but as Kyle wrote, there are several more copper minerals of a similar color.
As for the 'trollite': I think it is misspelled for tyrolite, which is also a copper mineral.
But I don't think it is what you have, I stay with chrysocolla.


13th Nov 2019 00:01 UTCJosé Zendrera 🌟 Manager

08774710016023718792560.jpg
Have seen this material in ebay. Although the seller is from Pakistan, item description states the stones origin is Afghanistan https://www.ebay.es/itm/Wow-708-carats-stunning-Trollite-Cabochon-From-Pakistan/233224226515?hash=item364d3f46d3:g:HBIAAOSwKRVc1tT9 ).
BTW, tyrolite, chrysocolla, azurite and malachite are listed in Afghanistan Mindat page but there are not photos of any of them.
Without analisys hard to say more than copper mineral embedded in what seems to be a quartz rock but if the seller says "trollite" (for tyrolite), why not?

14th Nov 2019 18:37 UTCMonika Yost

The ones on the right side of that picture resembles mine.  Will look up Tyrolite. Thank you

13th Nov 2019 01:44 UTCFrank K. Mazdab 🌟 Manager

funny... when I first looked at it I thought it was cheap lapis, though clearly the consensus here is that it's a Cu mineral in quartz.

I took the blue as being lazurite (or maybe afghanite), the white largely calcite (though it does seem to have that "glassiness" of sugary quartz), the described "mica" being errant phlogopite flakes, and the rusty areas being partially decomposed pyrite (because I pictured the samples as mine run laying around on the surface, exposed to the elements).

But I could also easily believe instead that it really is a blue copper mineral in quartz, or maybe even blue lazulite in quartz.  Certainly a drop of vinegar on the back of the white mineral would quickly prove (or disprove) the calcite component of my initial cheap lapis theory. 
 
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