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Identity Helpdiamond shaped crystals on chalcedony
3rd Nov 2017 23:17 UTCDaniel Bennett
if im not mistaken the yellowish stuff is calcite and has been dissolving and exposing the crystals. any ideas on what they could be? its from western MT.
4th Nov 2017 00:46 UTCDoug Schonewald
4th Nov 2017 01:40 UTCBob Harman
As an addendum, in my opinion, the diamond shaped areas are all part of the same chalcedony. looking closely at the bluish areas as a whole, suggests other areas closely resembling the diamond shaped areas. CHEERS.....BOB
4th Nov 2017 15:29 UTCEd Clopton 🌟 Expert
4th Nov 2017 16:04 UTCRob Woodside 🌟 Manager
4th Nov 2017 16:04 UTCDaniel Bennett
4th Nov 2017 16:07 UTCRob Woodside 🌟 Manager
4th Nov 2017 16:52 UTCDaniel Bennett
4th Nov 2017 18:59 UTCBob Harman
5th Nov 2017 15:54 UTCDaniel Bennett
.
5th Nov 2017 20:55 UTCEd Clopton 🌟 Expert
Barite also frequently forms diamond-shaped tabular crystals and so might be another candidate for the original mineral.
6th Nov 2017 00:54 UTCDaniel Bennett
6th Nov 2017 16:10 UTCRob Woodside 🌟 Manager
6th Nov 2017 17:25 UTCScott Rider
Opening one of the crystals could reveal what carbonate you have, but if its like mine, then they'll be hollow with no remaining calcite. Perhaps I should label my specimens as chalcedony after carbonate as I cannot prove it was calcite. But one thing I can say is that it was probably some form of carbonate due to the rhombic shape.
6th Nov 2017 19:50 UTCSteve Hardinger 🌟 Expert
14th Nov 2017 18:46 UTCDaniel Bennett
I suppose they must be calcite/carbonate crystals because they are hollow. barite and gypsum wouldn't dissolve away so easily. thanks for the helpful thoughts.
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Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 24, 2024 14:22:01