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Acanthite, Gypsum

Acanthite : Ag2S, Gypsum : CaSO4·2H2O
minID: K66-TWC

Photo Copyright © Rock Currier  - This image is copyrighted. Unauthorized reproduction prohibited.

Acanthite crystals in Gypsum. Specimen in the A.F.Holden Collection, Harvard University. You rarely see good acanthite specimens from Butte, Montana and one wonders how man of them went through the crushers. Scale at bottom of image is one inch with a rule at one cm.

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Photo added: 3rd Mar 2009

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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