Category Sulfate mineral Crystal system Monoclinic | Formula
(repeating unit) Na2Co(SO4)2•4H2O Space group P21/a | |
Crystal class Prismatic (2/m)
(same H-M symbol) Unit cell a = 11.15, b = 8.27,
c = 5.54 [Å], β=100.52° (approximated); Z = 2 | ||
Cobaltoblödite is a very rare cobalt mineral with the formula Na2Mn(SO4)2•4H2O. Cobaltoblödite was found in the Blue Lizard mine, San Juan County, Utah, USA, which is known for secondary uranium minerals Cobaltoblödite occurs intimately intergrown with manganese-, cobalt- and nickel-enriched blödite and a yet another new mineral - manganoblödite. Cobaltoblödite, as suggested by its name is a cobalt-analogue of blödite. It is also analogous to changoite, manganoblödite and nickelblödite - other members of the blödite group.
Association and origin
Besite blödite and cobaltoblödite, other minerals associated with manganoblödite include chalcanthite, gypsum, johannite, sideronatrite, a feldspar group-mineral and quartz.
References
Cobaltoblödite Wikipedia(Text) CC BY-SA