from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral, Ag3AsS3, often found with pyragyrite in silver veins.
from the GNU version of the Collaborative International Dictionary of English
- n. A sulphide of arsenic and silver of a beautiful cochineal-red color, occurring in rhombohedral crystals, and also massive; ruby silver.
from The Century Dictionary and Cyclopedia
- n. A native sulphid of arsenic and silver, occurring in rhombohedral and scalenohedral crystals and also massive.
There are various other silver minerals including: [[cerargirite]] (AgCl), [[proustite]] (3Ag2S. Ag2S.), [[pirargirite]] (3Ag2S. Sb2S3),
"ruby silver," stephanite or "black silver," and polybasite; the silver-arsenic sulphides, proustite or "light ruby silver" and pearcite; and the silver antimonide, dyscrasite.