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: Gabbro
Classification: Igneous
Alternate Specimen(s)
Fichter, Lynn S.
James Madison University
Texture/Color:
phaneritic/ dark gray, some green
Minerals Present:
plagioclase, amphibole, biotite, pyroxene, olivine
Intrusive or Extrusive?
intrusive
About this rock: Intrusive associated with mafic or basaltic volcanoes.
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Igneous
   
Sedimentary
     
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