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: Corundum
Alternate Specimen(s)
Fichter, Lynn S.
James Madison University
Class: OXIDES
Color
highly variable
Chemical Formula: Al2O3
Streak
none
Luster
glassy
Hardness
9
Cleavage
none
Density
3.9 - 4.1
Crystal Form
Trigonal/Hexagonal
Common Uses / Other Facts: Red = Ruby; Blue = Sapphire
rock
Sulfides and Sulfates
Halides
Organic
min