polybasite

To the foregoing must still be added the many tons of ruby, silver, polybasite, etc., shipped just as it came from the Poorman mine,—enough, at a rough estimate, to increase the total to fifteen hundred thousand, at least.

Other minerals which yield a minor percentage of the total silver produced are the silver-antimony sulphides, pyrargyrite or "ruby silver," stephanite or "black silver," and polybasite; the silver-arsenic sulphides, proustite or "light ruby silver" and pearcite; and the silver antimonide, dyscrasite.