Tamuraite
Tamuraite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Ir₅Fe₁₀S₁₆.
It crystallizes in the hexagonal crystal system (space group R-3m). It is a member of the Kuvaevite structural group.
Key properties: specific gravity 6.3; Metallic luster.
IMA status: approved, named in 2021.
Found in a fluvial placer deposit derived from ultramafic rocks of a layered complex.
It is found associated with Rh-rich pentlandite, Ir-bearing members of the laurite-erlichmanite series, Ir-bearing osmium.
The mineral was named to honor Dr. Nobumichi Tamura (b. 1966), senior scientist at the Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California, 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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