Formation
Charnockite is an intrusive igneous rock which is very hard and is formed due to weathering of existing rocks.
Chert forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The chert formation can be either of chemical or biological origin.
Composition
Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz
Quartz, Silicon
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Silicon Dioxide
Transformation
Metamorphism
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Types of Metamorphism
Contact Metamorphism, Impact Metamorphism
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Weathering
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Types of Weathering
Biological Weathering, Chemical Weathering
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Erosion
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Types of Erosion
Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion