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Formula: Cu4(AsO4)2(OH)2.2.5H2O
Hydrated arsenate with hydroxyl
Crystal System: Monoclinic
Specific gravity: 3.67 calculated
Hardness: 2½ to 3
Streak: Pale green
Colour: White, pale green
Common impurities: Zn
Environments:
Strashimirite is an uncommon secondary copper mineral formed by oxidation of
arsenites in the oxidation zone of copper-arsenic bearing mineral deposits,
(Webmin, HOM)
associated with tyrolite, cornwallite,
clinoclase, euchroite,
olivenite,
parnauite, goudeyite,
arthurite, metazeunerite,
chalcophyllite,
cyanotrichite, scorodite,
pharmacosiderite, brochantite,
azurite, malachite and
chrysocolla
(HOM).
At the Zapchitsa copper mine, Bulgaria, strashimirite occurs late in the sequence with
azurite,
olivenite, malachite and
euchroite, and it
replaces tyrolite and
cornwallite
(Dana, AM54.1221).
At the New cliffe quarry, Stanton under Bardon, Leicestershire, England, UK, strashimirite has been found with
malachite
(RES p197).
At the San Rafael mine, Nye county, Nevada, USA, strashimirite occurs with
chrysocolla pseudomorphs after
olivenite
and minor cornwallite
(R&M 85.6.523).
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