PROUSTITE
Source: 567
Proust″ite (?), n. [[From the French chemist, J. L. Proust.]] (Min.) A sulphide of arsenic and silver of a beautiful cochineal-red color, occurring in rhombohedral crystals, and also massive; ruby silver.
Source: 567
Proust″ite (?), n. [[From the French chemist, J. L. Proust.]] (Min.) A sulphide of arsenic and silver of a beautiful cochineal-red color, occurring in rhombohedral crystals, and also massive; ruby silver.