Perite

Images

Formula: PbBiO₂Cl
Valence: Pb²⁺Bi³⁺O₂Cl
Oxychloride, nadorite group, bismuth-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 8.16 measured, 8.24 calculated
Hardness: 3
Colour: Yellow
Luminescence: No fluorescence under long wave or short wave UV
Solubility: Easily soluble in dilute acids
Environments

Metamorphic environments
Hydrothermal environments

Localities

At an unnamed Quartz Vein, Glen Florrie Station, Ashburton Shire, Western Australia, Australia, perite was found 1.2 km east of Glen Florrie homestead, at the end of the station airstrip. It is fine-grained, soft and yellow, the colour being slightly darker when iron oxides are present. It occurs in masses up to 1.5 x 0.5 cm² in size, associated with galena, cerussite, plattnerite, kaolin, muscovite and tourmaline in a quartz vein intruding metasomatised metasediments (MM 40.313.537).
Perite from Glen Florrie Station - Image

At the type locality, the Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden, perite occurs in the Rimen drift (130 m level) as sulphur-yellow plates about 0.5 mm in size in fissures in a skarn of hausmannite, calcite, a ludwigite-like mineral, and a few crystals of a red unidentified mineral (AM 46.765-770).
The deposit is a metamorphosed Fe–Mn deposit (HOM).
Perite from the Långban Mine - Image

At the Blue Bell Mine, Zzyzx, Soda Mountains, Silver Lake Mining District, San Bernardino County, California, USA, perite is associated with kettnerite, hemimorphite, bromine-bearing chlorargyrite, fluorite, chrysocolla and quartz (HOM).
Perite from the Blue Bell Mine - Image

Back to Minerals