Ull"mann*ite (?), n. [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.
Ull"mann*ite (?), n. [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.