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: Talc
Alternate Specimen(s)
Fichter, Lynn S.
James Madison University
Class: SILICATES Group:Phylosilicates (sheet silicates)
Color
white
Chemical Formula: Mg3Si4O10(OH)2
Streak
white
Luster
greasy, pearly
Hardness
1
Cleavage
1 direction
Density
2.7 - 2.8
Crystal Form
Monoclinic
Common Uses / Other Facts: Most commonly known as the primary ingredient in talcum powder. In massive form it is also known as soapstone.
rock
Sulfides and Sulfates
Halides
Organic
min