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Dominant species
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Stromeyerite
Stromeyerite
Chemical
Formula
CuAgS
Species
Sulfides
Crystal
System
Orthorhombic
Mohs
Scale
2-3
Specific
Gravity
6.33
Color
Blue gray, dark blue, dark steel gray, or steel gray
Streak
Steel gray
Luster
Metallic
Diaphaneity
Opaque
Fracture
Sub-Conchoidal
Crystal Habit:Prismatic, massive, compact
Geological Setting:Hydrothermal veins (supergene enriched zone)
Stromeyerite is a sulfide mineral of copper and silver, with the chemical formula AgCuS. It forms opaque blue grey to dark blue orthorhombic crystals.

It was discovered in 1832 in Central Bohemia Region, Czech Republic, and named after the German chemist, Friedrich Stromeyer who performed the first analysis of the mineral.


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