Silver
Chemical Formula	Ag
Species	Native Elements
Crystal System	Isometric
Mohs Scale	2-3
Specific Gravity	10.497
Color	Silver-white, tarnishes dark gray to black
Streak	Silver white
Luster	Metallic
Diaphaneity	Opaque
Cleavage	None ObservedNone
Fracture	None observed
Crystal Habit：Crystals are cubic, octahedral, dodecahedral to a cm. Often elongated to many cm in herring bone twins and wires (crystals elongated along the axis)
Geological Setting：1) Primary Hydrothermal veins 2) Secondary enrichment 3) Alluvial nuggets