1. a red silver sulfide mineral consisting of silver, arsenic, and sulfur
Usage: mineralogy

Examples

• The geologist identified proustite crystals in the silver mine.
• Proustite has a distinctive red color that helps distinguish it from other silver minerals.
• The museum’s mineral collection includes a fine specimen of proustite.
• Miners often found proustite alongside other silver-bearing ores.
• The proustite sample showed excellent crystal formation under magnification.