Rocks & Minerals
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Minerals
Facts About 20 common minerals
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Fluorite
Calcite
Orthoclase Feldspar
Agate
Amethyst
Rose Quartz
Milky Quartz
Gypsum
Talc
Malachite
Azurite
Olivine
Galena
Hemitite
Magnetite
Pyrite
Sulfur
Biotite Mica
Muscovite Mica
What is a mineral??
Three Common Rocks
Igneous Rock
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Granite
Migmatite
Sedimentary Rock
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Limestone
Sandstone
Metamorphic Rock
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Schist
Marble
The Rock Cycle
Amethyst
Amethyst is purple quartz, and one of the most common minerals on the Earth. If
the quality of amethyst mineral is high enough, it is
used as a gemstone. The luster of amethyst is vitreous (shiny).
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