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36 relations: Alkaline earth metal, Amphibole, Azores, Faial Island, Felsic, Forsterite, Fugacity, Granite, Hermann–Mauguin notation, Igneous rock, Iron, Lithophysa, Magnesium, Magnetite, Manganese, Metamorphic rock, Mineral redox buffer, Obsidian, Olivine, Orthorhombic crystal system, Oxygen, Pegmatite, Phonolite, Pluton, Pyroxene, Quartz, Rhyolite, Ringwoodite, Silicate minerals, Space group, Syenite, Tephroite, Trachyte, Ultramafic rock, Volcano, Wadsleyite.
Alkaline earth metal
The alkaline earth metals are six chemical elements in group 2 of the periodic table.
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Amphibole
Amphibole is an important group of generally dark-colored, inosilicate minerals, forming prism or needlelike crystals, composed of double chain tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures.
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Azores
The Azores (or; Açores), officially the Autonomous Region of the Azores (Região Autónoma dos Açores), is one of the two autonomous regions of Portugal.
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Faial Island
Faial Island, also known in English as Fayal, is a Portuguese island of the Central Group (Portuguese: Grupo Central) of the Azores.
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Felsic
In geology, felsic refers to igneous rocks that are relatively rich in elements that form feldspar and quartz.
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Forsterite
Forsterite (Mg2SiO4; commonly abbreviated as Fo) is the magnesium-rich end-member of the olivine solid solution series.
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Fugacity
In chemical thermodynamics, the fugacity of a real gas is an effective partial pressure which replaces the mechanical partial pressure in an accurate computation of the chemical equilibrium constant.
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Granite
Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.
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Hermann–Mauguin notation
In geometry, Hermann–Mauguin notation is used to represent the symmetry elements in point groups, plane groups and space groups.
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Igneous rock
Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.
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Iron
Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.
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Lithophysa
A lithophysa (plural lithophysae, from Greek lithos "stone" + physan "to blow") is a felsic volcanic rock with a small spherulitic cavity and concentric chambers.
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Magnesium
Magnesium is a chemical element with symbol Mg and atomic number 12.
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Magnetite
Magnetite is a rock mineral and one of the main iron ores, with the chemical formula Fe3O4.
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Manganese
Manganese is a chemical element with symbol Mn and atomic number 25.
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Metamorphic rock
Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form".
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Mineral redox buffer
In geology, a redox buffer is an assemblage of minerals or compounds that constrains oxygen fugacity as a function of temperature.
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Obsidian
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.
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Olivine
The mineral olivine is a magnesium iron silicate with the formula (Mg2+, Fe2+)2SiO4.
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Orthorhombic crystal system
In crystallography, the orthorhombic crystal system is one of the 7 crystal systems.
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Oxygen
Oxygen is a chemical element with symbol O and atomic number 8.
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Pegmatite
A pegmatite is a holocrystalline, intrusive igneous rock composed of interlocking phaneritic crystals usually larger than 2.5 cm in size (1 in); such rocks are referred to as pegmatitic.
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Phonolite
Phonolite is an uncommon volcanic rock, of intermediate chemical composition between felsic and mafic, with texture ranging from aphanitic (fine-grain) to porphyritic (mixed fine- and coarse-grain).
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Pluton
In geology, a pluton is a body of intrusive igneous rock (called a plutonic rock) that is crystallized from magma slowly cooling below the surface of the Earth.
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Pyroxene
The pyroxenes (commonly abbreviated to Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks.
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Quartz
Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2.
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Rhyolite
Rhyolite is an igneous, volcanic rock, of felsic (silica-rich) composition (typically > 69% SiO2 – see the TAS classification).
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Ringwoodite
Ringwoodite is a high-pressure phase of Mg2SiO4 formed at high temperatures and pressures of the Earth's mantle between depth.
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Silicate minerals
Silicate minerals are rock-forming minerals with predominantly silicate anions.
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Space group
In mathematics, physics and chemistry, a space group is the symmetry group of a configuration in space, usually in three dimensions.
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Syenite
Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (.
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Tephroite
Tephroite is the manganese endmember of the olivine group of nesosilicate minerals with the formula Mn2SiO4.
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Trachyte
Trachyte is an igneous volcanic rock with an aphanitic to porphyritic texture.
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Ultramafic rock
Ultramafic (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content).
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Volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
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Wadsleyite
Wadsleyite is a high-pressure phase of polymorphous Mg2SiO4.
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References
[1] https://en.wikipedia.org/wiki/Fayalite
