ULLMANNITE
Source: 567
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.
Source: 567
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.