The Rocks & Minerals Challenge Game
 
Mineral Identification by Picture and Attribute
Explorers! Before you begin your journey, you need to recognize these geological specimens.
 
Begin by selecting one of the specimens pictured.
.
   
Inosilicates, Neosilicates, Sorosilicates
   
   
Oxides, Hydroxides,
Carbonates
Silicates
         
min min
Name: Pyroxene (Augite)
  Alternate Specimen(s)
Fichter, Lynn S.
James Madison University
Class: SILICATES Group: Inosilicates (chain silicates)
Color
green - black
Chemical Formula: (Ca,Na)(Mg,Fe,Al)(Al,Si)2O6
Streak
pale gray
Luster
glassy
Hardness
5 - 6
Cleavage
2 directions at almost 90°
Density
3.2 - 3.4
Crystal Form
Monoclinic
Common Uses / Other Facts:
rock
Sulfides and Sulfates
Halides
Organic
min