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Formula: Fe2+Fe3+3As3+5O13
Arsenite
Specific gravity: 4.3
Hardness: 3
Streak: Brown
Colour: Usually black to blackish brown
Environments
Pegmatites
Hydrothermal environments
Localities
At the Bou Azzer mining district, Drâa-Tafilalet Region, Morocco, schneiderhöhnite is associated with
löllingite, karibibite,
eosphorite, arseniosiderite,
scorodite and quartz
(HOM).
Schneiderhöhnite has been found in quartz-lined cavities in löllingite as
crystals to 1 mm. The most commonly observed formation sequence is quartz →
schneiderhöhnite → karibibite →
parasymplesite
(Minrec 38.5.394).
At the type locality, the Tsumeb mine, Tsumeb, Oshikoto Region, Namibia, schneiderhöhnite is a rare
secondary mineral in an oxidation zone in the
dolostone-hosted hydrothermal polymetallic ore deposit. Associated
minerals include zincian stottite,
chalcocite, tennantite and
leiteite
(AM 59.1139, HOM).
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