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.
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Inosilicates, Neosilicates, Sorosilicates
    
   
Oxides, Hydroxides,
Carbonates
Silicates
          
min min
Name: Rock Crystal (Quartz)
 
Class: SILICATES Group: Tektosilicates (framework silicates)
Color
clear
Chemical Formula: SiO2
Streak
white
Luster
transparent
Hardness
7
Cleavage
(Conchoidal Fracture)
Density
2.6
Crystal Form
Trigonal/Hexagonal
Common Uses / Other Facts: Used for electrical components, optical lenses, oramental stone, and as gemstones.
rock
Sulfides and Sulfates
Halides
Organic
min