olivenite


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olivenite

[ō′liv·ə‚nīt]
(mineralogy)
Cu2(AsO4)(OH) An olive-green, dull-brown, gray, or yellow mineral crystallizing in the orthorhombic system and consisting of a basic arsenate of copper. Also known as leucochalcite; wood copper.
References in periodicals archive ?
Parnauite forms yellowish green to bluish green single platelets and clusters (<1 mm) on gangue quartz at Khder, associated with conichalcite and small acicular crystals of olivenite.
2 mm) brown or green cubic crystals have been found at Tamdrost, with olivenite and lavendulan; the brown crystals contain iron, arsenic, potassium and considerable aluminum, so that they represent an interesting intermediate phase between pharmacosiderite (Al-free) and alumopharmacosiderite ([Fe.
7 mm) powellite crystals have been found on warty crusts of conichalcite and zinc-rich olivenite.
Olivenite occurs in all Mazarron prospects as more or less elongated prismatic crystals in different shades of green.
In the Umbria de Ramonete prospect olivenite is very abundant, usually as dark green prismatic to acicular crystals of less than 3 mm.
Acicular to short prismatic {001} olivenite crystals up to 3 mm and crystal clusters to 10 mm are present in the siderite cavities with azurite, and more rarely with pharmacosiderite.
Pharmacosiderite occurs rarely as small yellow crystals at the Gambatesa mine, found in association with olivenite, and in fossil wood at the Cassagna mine, in association with copper and arsenic minerals (Palenzona, 1991).
A few millimetric posnjakite crystals were found at the Gambatesa mine in a quartz and tinzenite vein, associated with chalcocite and olivenite.
In the oxidation zone exposures in the Andrassy III and Polyanka sections, olivenite is found very rarely in small cavities with azurite, mimetite and malachite.
1994) New minerals of Hungary II: Mimetite and olivenite from Rudabanya.
Chemical compositions of zincian olivenite and cuprian adamite.
The andyrobertsite-calcioandyrobertsite crystal cluster is perched on dark olive-green zincian olivenite and grass-green cuprian adamite with minor tennantite.