Pyragyrite
Revision as of 06:23, 24 July 2013 by (username removed)
Description
The blackish red mineral composed of the double sulfide of silver and antimony. Pyragyrite is often associated with silver deposits. It has been found in Peru, Russia, Australia, Canada, Mexico, and the United States (Colorado, Nevada, Idaho). Pyragyrite was also called red silver, ruby silver ore, and dark red silver ore prior to the 1800s.
Synonyms and Related Terms
silver antimony sulfide; red silver; ruby silver ore; dark red silver ore
Other Properties
Hexagonal crystal system with good cleavage in one direction. Striated.
Fracture = conchoidal or uneven. Luster = adamantine. Streak = purplish red
| Composition | Ag3SbS3 |
|---|---|
| Mohs Hardness | 2.5 |
| Density | 5.8-5.9 |
Additional Information
Mineralogy Database: Pyrargyrite
Authority
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985