The Rocks & Minerals Challenge Game
 
Rock 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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Metamorphic
     
     
Igneous
         
Sedimentary
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Name: Andesite  
Classification: Igneous
Texture/Color:
aphanitic
Minerals Present:
amphibole, biotite, plagioclase, pyroxene
Intrusive or Extrusive?
extrusive
About this rock:
Characteristic intermediate volcanic rock from subduction zones - such as the Andes Mountains after which it is named.
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Igneous
   
Sedimentary
     
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