The Collaborative International Dictionary
Dyscrasite
Dyscrasite \Dys"cra*site\, n. [Gr. ? bad + ? compound.] (Min.) A mineral consisting of antimony and silver.
Wiktionary
dyscrasite
n. (context mineral English) An orthorhombic-pyramidal mineral containing antimony and silver.
Wikipedia
Dyscrasite
The silver antimonide mineral dyscrasite has the chemical formula AgSb. It is an opaque, silver white, metallic mineral which crystallizes in the orthorhombic crystal system. It forms pyramidal crystals up to and can also form cylindrical and prismatic crystals.