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GeneralCyanotrichite
28th Mar 2024 22:22 UTCBrighton Alfred
28th Mar 2024 22:43 UTCKevin Conroy Manager
"Cyanotrichite Group.
A mineral closely related to Cyanotrichite, but often misidentified (old published X-ray powder diffraction data of both species are unreliable; much improved data were recently given by Hager et al. (2009)).
Although the mineral shows a close relation to cyanotrichite, it is even more closely related to camérolaite.
PXRD and chemical analysis are necessary for a correct identification.
Previously, it was thought that quantitative measurements of the carbonate contents were needed for a correct identification, and that qualitative tests were not conclusive, because cyanotrichite can apparently contain small amounts of carbonate. However, Hager et al. (2009) suggest that there is no evidence for solid solution between cyanotrichite and carbonatecyanotrichite; it is also evident that some carbonatecyanotrichite specimens contain no sulfate. This explains previous contradictory results from PXRD and chemical studies of given samples.
The nomenclature situation is still complicated because the crystal structures of neither mineral is presently known.
Visually similar to Khaidarkanite."
28th Mar 2024 23:01 UTCBrighton Alfred
28th Mar 2024 23:48 UTCKevin Conroy Manager
29th Mar 2024 00:09 UTCSteve Hardinger 🌟 Expert
Kevin Conroy Manager ✉️
Unfortunately sometimes dealers, even well known and respected ones, have specimens that are mislabeled. And sometimes mislabeled deliberately to 'increase value'.
29th Mar 2024 00:32 UTCBrighton Alfred
Should i simply label the species as Cyanotrichite?
29th Mar 2024 00:54 UTCKevin Conroy Manager
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