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.
Gabbro, a mafic rock, forms due to cooling and crystallization of magma underneath Earth's surface.
1.2 Composition
1.2.1 Mineral Content
Calcite, Clay, Clay Minerals
Augite, Olivine, Plagioclase, Pyroxene
1.2.2 Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide
1.3 Transformation
1.3.1 Metamorphism
1.3.2 Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Impact Metamorphism
1.3.3 Weathering
1.3.4 Types of Weathering
Not Applicable
Chemical Weathering
1.3.5 Erosion
1.3.6 Types of Erosion
Not Applicable
Coastal Erosion