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: Diatomaceous Earth
 
Classification: Sedimentary
Mineral Compostion:
none, amorphous silica
Texture and Distinguishing Properties:
very fine, powdery
How Did the Rock Form?
deep marine environment
About this rock: composed of shells of algae (diatoms)
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Igneous
   
Sedimentary
     
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