Green crystals of rosiaite, a very rare Pb-Sb oxide only known from a few localities worldwide. From: Tafone Mine, Grosseto Province, Tuscany, Italy. — Photo: David Hospital · CC BY-SA 4.0
Rosiaite
Rosiaite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula PbSb₂O₆.
It crystallizes in the hexagonal crystal system (space group P-31m).
Key properties: specific gravity 6.96; White streak; Resinous luster; optically uniaxial.
IMA symbol Rsi, IMA status: approved, named in 1995.
From an antimony deposit in highly silicified evaporites (Cetine mine, Italy).
It is found associated with Valentinite, tripuhyite, bindheimite (Cetine mine, Italy).
The name refers to the village of Rosia, near the Cetine mine, Italy.
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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