chalcanthite


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chalcanthite

[kal′kan‚thīt]
(mineralogy)
CuSO4·5H2O A blue to bluish-green mineral which occurs in triclinic crystals or in massive fibrous veins or stalactites. Also known as bluestone; blue vitriol.
References in periodicals archive ?
White epsomite fibers occur on melanterite and chalcanthite stalactites.
Antlerite, a rare secondary mineral at Rudabanya, occurs in small fractures in the limonite ores as dull, pale green, powdery coatings and thin layers consisting of randomly intergrown, acicular crystals of microscopic size associated with malachite, covellite and chalcanthite (Szakall et a).
Chalcanthite is found with other secondary copper minerals in the First Sovietskiy mine.
George Robinson (personal communication) has identified chalcanthite (by EDS) from the Flambeau mine, as post-mining coatings on sericite schist.
Blue efflorescences of post-mining chalcanthite can be found on tetrahedrite ore piles at Cerro Chico.
Primary Copper Minerals Secondary Copper Minerals Bornite Tenorite Antlerite Devilline Chalcopyrite Tetrahedrite Aurichalcite Langite Chalcocite Azurite Malachite Covellite Brochantite Metatorbernite Cuprite Calciovolborthite Metazeunerite Digenite Chalcanthite Olivenite Djurleite Chalcoalumite Parnauite Enargite Chrysocolla Vesignieite Lautite Conichalcite Volborthite Tennantite Cyanotrichite Zeunerite
On level 33 it is extremely common in octahedral crystals to 3 mm on halotrichite, pink coquimbite, red botryogen, blue chalcanthite, brown jarosite, yellow copiapite and many other complex sulfates .