pyrargyrite
Noun
Meaning
Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster.
Source: Webster's dictionarySynonyms
calcite
cinnabar
chalcopyrite
cerussite
covellite
chalcocite
argentite
barite
arsenopyrite
proustite
bornite
bournonite
anglesite
jamesonite
hessite
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