Formation of Anthracite and Minette

Anthracite

Minette

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1 Formation

1.1 Formation

Anthracite forms from the accumulation of plant debris in a swamp environment. When plant debris dies and falls into the swamp, the standing water of the swamp protects it from decay.

Minette formation takes place deep beneath the Earth’s surface at around 150 to 450 kms, and are erupted rapidly and violently.

1.2 Composition

1.2.1 Mineral Content

Calcite, Clay, Clay Minerals

Amphibole, Carbonate, Garnet, Micas, Olivine, Phlogopite, Pyroxene

1.2.2 Compound Content

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Silicon Dioxide, Titanium Dioxide

1.3 Transformation

1.3.1 Metamorphism

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1.3.2 Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

1.3.3 Weathering

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1.3.4 Types of Weathering

Not Applicable

Biological Weathering, Chemical Weathering

1.3.5 Erosion

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1.3.6 Types of Erosion

Not Applicable

Chemical Erosion, Coastal Erosion, Sea Erosion, Wind Erosion

Anthracite and Minette Formation

Formation of rocks is a long process and hence, Anthracite and Minette formation sounds very interesting. According to the formation, all rocks are divided into :Igneous Rocks, Fossil Rocks and Metamorphic Rocks. Igneous rocks form by crystallization of magma or lava. The magma is made up of various components of pre-existing rocks which have been subjected to melting either at subduction zones or within the Earth's mantle. Igneous rocks are generally seen at mid ocean ridges or in intra-plate hotspots. Sedimentary rocks are formed when sediments accumulate gradually. As the sediments are buried they get compacted as more and more material is deposited on top. Eventually the sediments become so dense that they form a rock. Metamorphic rocks are rocks which once existed as igneous or sedimentary rocks but have been subjected to varying degrees of pressure and heat within the Earth's crust. Get to know all about formation of Anthracite and Minette, composition of Anthracite and Minette and their transformation.