pyrargillite
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pyrargyrite — pīˈrärjəˌrīt, pə̇ˈr noun ( s) Etymology: German pyrargyrit, from pyr + argyr + it ite : a silver antimony sulfide Ag3SbS3 that is isomorphous with proustite, occurs in rhombohedral crystals or massive, and has a dark red or black color with a… … Useful english dictionary
pyrantimonite — pyrantimonite, pyrargillite, pyrargyrite see pyro 2 … Useful english dictionary
