Noonkanbahite
Noonkanbahite is an IMA-recognized mineral species in the silicate class, with the chemical formula NaKBaTi₂(Si₄O₁₂)O₂.
It crystallizes in the orthorhombic crystal system (space group Imma). It is a member of the Batisite structural group.
Key properties: Mohs hardness 6; specific gravity 3.39; Vitreous luster; optically biaxial.
IMA symbol Noo, IMA status: approved, named in 1965.
Lines the walls of cavities in alkaline syenite, also a rock-forming mineral in syenite.
It is found associated with Potassic feldspar, kalsilite, aegirine, galena (Murun).
The name refers to Noonkanbah sheep station, Wolgidee Hills, West Kimberley District, Australia, near 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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