Tanohataite
Tanohataite is an IMA-recognized mineral species in the silicate class, with the chemical formula LiMn₂Si₃O₈(OH).
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Pectolite structural group.
Key properties: Mohs hardness 5–5.5; specific gravity 3.33; White streak; Vitreous, silky [aggregates] luster; optically biaxial.
IMA symbol Tnh, IMA status: approved, named in 2007.
Found in lens-like veins in a sediment-hosted Mn-ore deposit in contact metamorphic rocks near a granodiorite intrusion.
It is found associated with Quartz, aegirine, Mn-arfvedsonite, nambulite, natronambulite, barite.
The name refers to a village close to the location from which the first specimens were collected.
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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