proustite
Noun
Meaning
A sulphide of arsenic and silver of a beautiful cochineal-red color, occurring in rhombohedral crystals, and also massive; ruby silver.
Source: Webster's dictionarySynonyms
cinnabar
orpiment
galena
chalcopyrite
covellite
chalcocite
realgar
argentite
sphalerite
bornite
stibnite
enargite
tetrahedrite
tennantite
pyrargyrite
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