senarmontite


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senarmontite

(ˌsɛnɑːˈmɒntaɪt)
n
(Minerals) a white or grey mineral consisting of antimony trioxide in cubic crystalline form. Formula: Sb2O3
[C19: named after Henri de Sénarmont (died 1862), French mineralogist]
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There are also, of course, much fancier items in the collection, including sharp floater crystals and twins of some truly rare species: senarmontite, glaucodot, stolzite, hambergite, neptunite, epididymite, a petite cumengite "mace" on boleite, and (naturally) a superb specimen of a member of the whiteite group, specifically of whiteite-(CaFeMg).
In the oxidation zone, cervantite, valentinite, stibiconite, kermesite and senarmontite are found to depths of about 100 meters.
Johns Island, Egypt; and the classic senarmontite and associated species locality in Algeria, to name only a few.
Senarmontite has been identified as a rare secondary mineral in the Bor pit.
1993) described an interesting example of replacement of antimony and stibnite by secondary senarmontite along a contact.