In hydrothermal calcite veins associated with Co-Ni-Ag ores.
IMA Status:
Valid Species (Pre-IMA) 1845
Locality:
From the Cobalt district, near Red Lake; in the Silver Islet mine and the Hemlo gold deposit, Thunder Bay district, Ontario, Canada. Link to MinDat.org Location Data.
Name Origin:
After the Saxon mineralogist Johann Friedrich August Breithaupt (1791-1873).
Chemical Formula: 