Minerals
Rocks
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
Rocks Used in Building
Crystals
Fossils
About
Opal's Pals (Comic)
Earthquakes
Gemstones
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Igneous Rocks
Inner Structure of the Earth
Mass Wastage
Metamorphic Rocks
Minerals
Our Place in the Universe
Plate Tectonics
Properties of Matter
Sedimentary Rocks
Streams and Rivers
Tectonics
Weathering and Soils
Wind and Deserts
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Groutite
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Photos of Minerals
Groutite
Groutite
Groutite
Photos are copyright free for non-commercial educational uses. Just credit photos to R.Weller/Cochise College.
Photos
Groutite-Dark Brown-Botryoidal
