Iwateite
Iwateite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Na₂BaMn(PO₄)₂.
It crystallizes in the hexagonal crystal system (space group P-3). It is a member of the Aphthitalite structural group.
Key properties: specific gravity 4.06; White streak.
IMA symbol Iw, IMA status: approved, named in 2013.
Found in a Ba- and Sr-bearing manganese deposit.
It is found associated with Sérandite.
The name refers to the Japanese Prefecture (Iwate) that contains the locality that produced the first specimens.
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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