Pittongite
Pittongite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula (Na,H₂O)₀.₇(W,Fe³⁺)(O,OH)₃.
It crystallizes in the hexagonal crystal system (space group P-6m2).
Key properties: Mohs hardness 2–3; specific gravity 4.4; Cream streak; Pearly to earthy luster; optically uniaxial.
IMA symbol Pit, IMA status: approved, named in 2005.
Formed by weathering ferberite in hydrothermal quartz veins in association with granite by chemical reaction with acidic, oxidizing solutions containing sodium.
It is found associated with Ferberite, quartz, bismuth, gold, bismuthinite, koechlinite, elsmoreite.
The name refers to a former village near the deposit, Pittong (an Australian indigenous word for father).
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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