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Marble Rock Type, Composition, Formation, Occurrence & Uses
Marble is a non-foliated metamorphic rock frequently used worldwide in various applications. Very few rocks have so many uses as ...
Mariposite Rock Type, Composition, Formation, Occurrence & Uses
The word Mariposite is often used to identify green micas colored by small amounts of chromium. Mariposite is also used ...
Sedimentary Rocks
Shale Rock Type, Color, Composition, Formation, Occurrence, & Uses
Shale is an abundant, fine-grained, clastic sedimentary rock. The rock forms when silt and clay-sized mineral particles compress. Its composition ...
Sedimentary Rocks
Sandstone Rock Type, Composition, Formation, Occurrence, & Uses
Sandstone is a clastic sedimentary rock. It is the most common sedimentary rock found in sedimentary basins worldwide. Sandstone is ...
Sedimentary Rocks
Rock Salt Type, Composition, Formation, Occurrence, Mining & Uses
Rock salt is a sedimentary rock primarily composed of halite. Halite is a mineral of sodium chloride (common salt), NaCl. ...
Sedimentary Rocks
Coal Rock Type, Composition, Formation, Rank, Types & Uses
Coal is one of the most commonly used rocks in the world. It is an organic sedimentary rock that forms ...
Novaculite Rock Type, Composition, Formation, Occurrence & Uses
Novaculite is a unique metamorphic rock native to only the Ouachita Mountains of Arkansas and Oklahoma. It is also known ...
Igneous Rocks
Andesite Rock Type, Composition, Formation, Occurrence & Uses
Andesite is a gray-black volcanic igneous rock. The word andesite is derived from Andes Mountains in the western part of ...
Sedimentary Rocks
Siltstone Rock Type, Color, Composition, Formation, Occurrence, & Uses
Siltstone is a clastic sedimentary rock. It is characterized as mudrock because it is mostly composed of silt. A typical ...
Sedimentary Rocks
Iron Ore Type, Formation, Occurrence & Uses
Iron ores are minerals and rocks from which metallic iron is extracted. Iron ore is not designated as a rock, ...
