Number 6

Color--------------------Shades of brown to yellowish brown

Luster------------------Submetallic, resinous

Streak------------------Light yellow to yellowish brown.  (Always lighter than the mineral sample)

Hardness--------------3.5 - 4.0

Cleavage/--------------Cleavage, perfect in six directions
Fracture

S.G.---------------------3.9 - 4.1

Special Properties---Smells like sulfur when rubbed across the streak plate.

Formula----------------ZnS

Mineral name---------Sphalerite

Family------------------Sulfides

Uses--------------------Main ore of zinc

Sphalerite