Pyrargyrite definitions

pī-rär'jə-rīt', pĭ-
A deep red to black silver ore with composition Ag3 SbS3 .
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A dark-colored, rhombohedral mineral, Ag3SbS3, an ore of silver; silver antimony sulfide.
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(mineralogy) Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, Ag3SbS3, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster; it is an important silver ore.
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Origin of pyrargyrite

German Pyrargyrit Greek puro- pyro- Greek arguros silver argent