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MINERAL IDENTIFICATION PROJECT


Search found 1 mineral.


Mineral
Hard- ness
Cleavage
Fracture
Trans- parency
10% HCl Reaction
SG
Luster
Color
Streak
Xtal Form
Mineral Class
Comments
obsidian
5.50
none
conchoidal
Transparent
none
2.65
glassy
black
white
microcrystalline
silicates
Not a mineral but common in felsic volcanic regions. Clear to black with inclusions of rock, minerals or air bubbles.

 
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