plenargyrite

plenargyrite Min.

(plɪˈnɑːdʒɪraɪt)

[mod. (F. v. Sandberger 1882) f. L. plēn-us + Gr. ἄργυρος silver + -ite¹; cf. miargyrite.]

A sulphide of silver and bismuth found near Schapbach in Baden; said to contain more silver than miargyrite.