A dark red mineral consisting of a sulfide of silver and antimony.
- ‘Hurst describes the vugs as containing gold, silver, polybasite, pyrargyrite, and tetrahedrite.’
- ‘The primary ore mineral was pyrargyrite, and much of the ore ran 500-5,000 ounces of silver per ton.’
- ‘Hurst observed pyrargyrite partly and completely enclosing polybasite crystals on tetrahedrite.’
- ‘Pseudomorphs of marcasite, chalcopyrite, pyrite, arsenopyrite, pyrargyrite, magnetite, and quartz after pyrrhotite have been reported.’
- ‘Ore mineralization consists of free gold, electrum, and pyrargyrite.’
Mid 19th century: from Greek puro- (from pur ‘fire’) + arguros ‘silver’ + -ite.
We take a look at several popular, though confusing, punctuation marks.