Description

1.Name:

Sphalerite

2.Basic Information:

Chemical composition is ZnS, the crystals of the cubic system administered sulfide minerals.

Sphalerite containing zinc *7.1% .

1) Hardness: 3.9 to 4.2 g/cm3
2) Cleavage: parallel tetrahedron.
3) Fracture: fracture surface is not flat
4) Color: as the iron content of different directly affect the color of sphalerite; Iron was increased, the change from shallow to deep, from weak yellow, brown, brown to black (marmatite)
5) Streaks: because of the different iron content directly affect the color streaks of sphalerite; Iron was increased, from shallow to deep, from white to brown.
6) Transparency: transparent to translucent.
7) Sheen: from adamantine luster to the semi metallic luster.
8) Luminance: friction fluorescence and phosphorescence.
9) Other: some sphalerite will have friction luminance, non-conductive.