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Formula: (As,Sb)6As4S14
Sulphide, arsenic- and antimony-
bearing mineral
Crystal System: Orthorhombic
Specific gravity: 3.98 measured, 4.06 calculated
Hardness: 1½
Streak: Orange-yellow
Colour: Lemon-yellow to orange-yellow
Environments
Wakabayashilite occurs as fibres in druses of quartz or embedded in
calcite
(Webmin).
Localities
At Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France, wakabayashilite
is associated with chabournéite,
pierrotite, parapierrotite,
stibnite, pyrite,
sphalerite, twinnite,
zinkenite, madocite,
andorite, smithite,
laffittite, routhierite,
aktashite, realgar and
orpiment
(HOM).
At the type locality, the Nishinomaki mine, Gunma Prefecture, Japan, wakabayashilite occurs as minute fibres
up to 0.5 cm long in druses of quartz. Associated minerals include
realgar, orpiment,
stibnite and pyrite
(AM 57.1311-1312).
At the White Caps Mine, Manhattan, Manhattan Mining District, Toquima Range, Nye County, Nevada, USA,
wakabayashilite occurs as golden yellow fibres up to 2 cm long or as prisms embedded in
calcite, associated with realgar
and orpiment
(AM 57.1311-1312, CM 13.418-419).
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