Deanesmithite
Deanesmithite is an IMA-recognized mineral species in the chromate class, with the chemical formula Hg¹⁺₂Hg²⁺₃S₂O(CrO₄).
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 5; specific gravity 8.06; Less intense red-orange streak; Adamantine luster; optically biaxial.
IMA symbol Dsh, IMA status: approved, named in 1991.
Very rare in a mercury deposit in silicate–carbonate rock hydrothermally altered from serpentinite.
It is found associated with Cinnabar, edoylerite.
The mineral was named to honor Professor Deane Kingsley Smith, Jr. (1930–2001), Pennsylvania State University, University Park, Pennsylvania, USA.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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