Inosilicate (chain silicate), carpholite group, forms a series with ferrocarpholite
Specific gravity: 3.0
Hardness: 5 -5½
Solubility: Insoluble in acids
Common impurities: Ti,Fe,V,Zn,Mg,Ca,Na,K
Carpholite is a manganese-bearing mineral that occurs in hydrothermal veins in
shale (HOM, Dana) associated with
chloritoid and fluorite
(HOM). It is a mineral of the
At the type locality, Horní Slavkov, Sokolov District, Karlovy Vary Region, Czech Republic, carpholite is associated with fluorite and quartz in tin deposits (Dana).
At the Sawtooth batholith, Idaho, USA, a lithium, potassium, fluorine bearing carpholite has been found as needles in miarolitic cavities. The associated minerals are quartz, microcline, albite, beryl, topaz, bertrandite, zinnwaldite, fluorite, hematite and apatite. The nature of the occurence indicates a relatively low pressure and medium temperature environment for its origin (AM 74.1084-1090).
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