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Webster 1913 Edition


Ullmannite

Ull′mann-ite

,
Noun.
[So named after
J. C.
Ullman
, a German chemist.]
(Min.)
A brittle mineral of a steel-gray color and metallic luster, containing antimony, arsenic, sulphur, and nickel.

Definition 2021


ullmannite

ullmannite

English

Noun

ullmannite (plural ullmannites)

  1. (mineralogy) A nickel antimony sulphide mineral.