Formation
Mineral Content
Compound Content
Metamorphism
Types of Metamorphism
Weathering
Types of Weathering
Erosion
Types of Erosion
Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, MgO, Silicon Dioxide
Biological Weathering, Chemical Weathering, Mechanical Weathering
Coastal Erosion, Water Erosion
Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.
Clay Minerals, Pyrite, Quartz, Sulfides
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism