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Formula: Al6(AsO4)3(OH)9(H2O)4.8H2O
Arsenate
Crystal System: Orthorhombic
Specific gravity: 2.27 calculated
Environments
Sedimentary environments
Hydrothermal environments
Galeaclolusite is a new mineral, approved in 2020 and too date (May 2023) reported only from the type
locality.
Localities
At the type locality, Salle B, South Mine, Cap Garonne Mine, Le Pradet, Toulon, Var, Provence-Alpes-Côte d'Azur,
France, galeaclolusite forms crusts and spheroids of white fibres up to 50 μm long by 0.4 μm wide and only
0.1 μm thick. It can be intergrown with bulachite
(MM 107.1657).
Galeaclolusite likely formed during supergene alteration.
However, the mineral could have also formed from an alternation of
bariopharmacoalumite because it is shown to have grown as needles
radiating out from a fractured cube of bariopharmacoalumite
(AM 107.1657).
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