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The planet with the lowest overall density is Saturn.
Gabbro is mafic intrusive igneous rock and contains olivine, pyroxene, plagioclase and amphibole. These minerals are unstable at low pressure temperature conditions. In contrast, granite is felsic intrusive igneous rock and contains high amounts of quartz and orthoclase. Stability of minerals are increasing top to bottom in Bowen's Reaction Series.
Minerals species which crystallize in the hexagonal division are apatite, beryl, and high quartz. Minerals of this division tend to produce hexagonal prisms and pyramids. Example species which crystallize in the rhombohedral division are calcite, dolomite, low quartz, and tourmaline. Such minerals tend to produce rhombohedra and triangular prisms.
The photosphere.
The Bowen's Reaction Series lists the order of crystallization of minerals from high temperature to low temperature environments, starting with olivine and ending with quartz. See the link below.
Quartz - the term quartzite is applied to to low grade metamorphic rocks formed predomiently of quartz, mostly they are altered sandstones. Alog with the quartz there may be low abundances of many different minerals e.g. mica, or feldspar.
The planet with the lowest overall density is Saturn.
less lipid
Felsic refers to igneous rocks that are rich in elements that form feldspar and quartz. Their densities vary, depending on the rock, but they generally have low density.
Gabbro is mafic intrusive igneous rock and contains olivine, pyroxene, plagioclase and amphibole. These minerals are unstable at low pressure temperature conditions. In contrast, granite is felsic intrusive igneous rock and contains high amounts of quartz and orthoclase. Stability of minerals are increasing top to bottom in Bowen's Reaction Series.
Minerals species which crystallize in the hexagonal division are apatite, beryl, and high quartz. Minerals of this division tend to produce hexagonal prisms and pyramids. Example species which crystallize in the rhombohedral division are calcite, dolomite, low quartz, and tourmaline. Such minerals tend to produce rhombohedra and triangular prisms.
The photosphere.
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The Bowen's Reaction Series lists the order of crystallization of minerals from high temperature to low temperature environments, starting with olivine and ending with quartz. See the link below.
Although gabbro is low in silica and has no quartz there are quartz gabbro's. Quartz gabbro's are thought to occur from magma that was over-saturated with silica.
Low Density a Metal?NO!!!!
Mining is mostly concentrated in WA (Western Australia). This is because of its low population density and abundance of raw minerals.