Paradocrasite
Paradocrasite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Sb₂(Sb,As)₂.
It crystallizes in the monoclinic crystal system (space group C2).
Key properties: specific gravity 6.52; Black streak; Metallic luster.
IMA symbol Pdc, IMA status: approved, named in 1969.
Replacing calcite (Broken Hill, Australia).
It is found associated with Antimonian löllingite, stibarsen, calcite (Broken Hill, Australia).
Its name comes from the Greek for unexpected alloy.
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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