Raspite

raspite

stolzite

cuprotungstite

yttrotungstite-(Y)

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Formula: Pb(WO4)
Anhydrous tungstate, scheelite group, monoclinic paramorph of stolzite
Specific gravity: 8.46
Hardness: 2½ to 3
Streak: Yellow-white
Colour: Pale yellow, yellowish brown, gray, colorless
Solubility: Decomposed by hydrochloric acid with separation of yellow tungstic acid
Environments

Hydrothermal environments

Raspite is an uncommon secondary mineral formed in the oxidised zone of tungsten-bearing hydrothermal base metal deposits. Associated minerals include hydrokenoelsmoreite and its varieties alumotungstite and ferritungstite, stolzite, yttrotungstite-(Y) and cuprotungstite. Raspite inverts to stolzite above 410oC (HOM, Mindat).

Localities

At the type locality, Broken Hill Proprietary mine, Broken Hill, Broken Hill district, Yancowinna county, New South Wales, Australia, raspite occurs with stolzite in manganiferous gossan (Dana).

At the Sumidoro mine, Padre Viegas district, Mariana, Minas Gerais, Brazil, raspite occurs with stolzite (Dana).

At the Cligga Mine, Cligga Head, Perranporth, Perranzabuloe, Cornwall, England, UK, raspite is a supergene mineral in high temperature tin-tungsten veins, associated with stolzite. The oxidation of primary galena almost certainly contributed the lead, and wolframite is the most probable souce of the tungstate, needed for formation of raspite (M&M 34.29-32).

At the Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK, raspite occurs with stolzite (M&M 34.29-32).

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