Definitions for ullmannite
This page provides all possible meanings and translations of the word ullmannite
A nickel antimony sulphide mineral.
Origin: Johann Christoph Ullmann (1771-1821), German mineralogist, and -ite.
a brittle mineral of a steel-gray color and metallic luster, containing antimony, arsenic, sulphur, and nickel
Ullmannite is a nickel antimony sulfide mineral with formula: NiSbS. Considerable substitution occurs with cobalt and iron in the nickel site along with bismuth and arsenic in the antimony site. A solid solution series exists with the high cobalt willyamite.
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