Itoite
Itoite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Pb₃GeO₂(SO₄)₂(OH)₂.
It crystallizes in the orthorhombic crystal system.
Key properties: specific gravity 6.67; Silky luster.
IMA symbol It, IMA status: approved, named in 1960.
Very rare, in an oxidized zone of a polymetallic germanium-bearing sulfide deposit, as an alteration product of fleischerite, perhaps produced by grinding for X-ray analysis.
It is found associated with Fleischerite, mimetite, cerussite, anglesite, plumbojarosite, tennantite, dolomite.
The mineral was named to honor Professor Tei-ichi Ito (1898–1980), Japanese mineralogist and crystallographer, University of Tokyo, Tokyo, Japan.
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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