COBALTOCALCITE is actually Calcite (subspecies cobaltian).
Cobaltocalcite with associated Malachite.
CHEMISTRY - CoCO3
CRYSTALLOGRAPHY - Hexagonal
CRYSTAL GROWTH AND HABITS - Crystals of Cobaltocalcite are rare, it usually forms spherical masses or crusts with a fine crystalline surface.
COLOR AND OPTICAL PROPERTIES - Commonly pinkish red, transparent to translucent.
HARDNESS - 4
SPECIFIC GRAVITY - 4.1
LUSTER - Vitreous
STREAK - Pink
BREAKABILITY - Uneven fracture
OCCURRENCE - Found as a hydrothermal deposit in cobalt and nickel bearing mineral veins.
ASSOCIATED MINERALS - Roselite, Erythrite
MINERAL NAME - Named after its composition of cobalt and carbonate (Calcite?). It was originally called Sphaerocobaltite.