Aplowite

aplowite

moorhouseite

baryte

siderite

Images

Formula: Co(SO4).4H2O
Hydrated normal sulphate of cobalt, rozenite group
Crystal System: Monoclinic
Specific gravity: 2.33 measured, 2.36 calculated
Hardness: 3
Streak: White
Colour: Bright pink
Solubility: Water soluble
Common impurities: Mn,Ni
Environments

Hydrothermal environments

Localities

The type locality, the Walton baryte mine, Walton, Hants county, Nova Scotia, Canada, is the largest producer of baryte in Canada and in addition has an associated high-grade lead-zinc-copper-silver orebody.
Aplowite and moorhouseite occur together as closely associated water soluble patchy efflorescences on a 2" X 4" X 8" specimen containing various sulphides in a baryte-siderite matrix. Colloform cobalt- and nickel- bearing pyrite occurs abundantly here and is the most probable source of the supergene cobalt sulphates (CM 8.166-171).

Back to Minerals