Pyroxene
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Pyroxene: Any of a group of crystalline minerals common in igneous rocks containing two metallic oxides . Pyroxene is a silicate of lime and magnesia with sometimes alumina and iron.
The Pyroxene Minerals
The pyroxene minerals are major parts of the crust and mantle.
About Quartz ...
Pyroxene One of a number of 5i04 silicate minerals common in meteorites
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Schreibersite A phosphide mineral with the formula (Fe,Ni)3P ...
Pyroxene, var. Augite is common as large masses. A five and a half pound specimen was found at the Philips Mine that measured 5 x 4 x 2.5 inches on the lower dump (Zodac, 1933).
Jadeitic pyroxene in jade typically is not pure: It contains varying percentages of the pyroxenes diopside (CaMgSi2O6) and/or kosmochlor (NaCrSi2O6) - as well as the iron-rich pyroxenes hedenbergite (CaFe2+Si2O6) and aegirine (NaFe3+Si2O6) - in ...
Accessories: magnetite, ilmenite, quartz, hornblende pyroxene, glass
Accidentals: olivine, orthoclase, anorthoclase Andradine ...see garnet .. andradite
Crystallography: Isometric ...
pyrosilicattes Synonym of sorosilicates pyroxene (group) Group of minerals that contain iron, magnesium, silicon, and oxygen. They may also contain calcium, sodium, and lithium.
Kimberlite (Pipe) (n) Kimberlite is an igneous rock composed of olivine, phlogopite, pyroxene and garnet, with a variety of chemically anomalous trace minerals.
Those inosilicate species which are composed of single chains are classified as the pyroxenes, while those which are constructed of double chains are termed the amphiboles.
The asterism of the star garnets is caused by asbestiform pyroxene and amphibole inclusions.
Bronzite is actually a hypersthene (part of the pyroxene group) that has been chemically "weathered." The process creates a new, opaque stone with a submetallic luster, especially on its cleavage surfaces.
Basic igneous rocks (BIR) include basalts, dolerites, gabbros, kimberlites, and peridotites, and abundant minerals in such rocks include olivine, pyroxenes, Ca-feldspar (plagioclase), amphiboles, and biotite.
Diopside is a gemstone that belongs to the pyroxene mineral group. It is best known for its rich-green variety, called chrome diopside. The name is an allusion to the chromium content responsible for the color.
Bronzite is a medium hard hypersthene (part of the pyroxene group) ranging from greenish-black to brown in colour.
Jadeite is a sodium-rich aluminous pyroxene; nephrite is a fine-grained, calcium-rich, magnesium, iron, aluminous amphibole.
A brown gemstone of the pyroxene mineral family. The iron like substance creates a metallic bronze like sheen on the surface of the gemstone. Read more in our Gemstones & Minerals Glossary
Above is an example of Bronzite.
BROOCH or BROACH ...
Diopside stone is a calcium magnesium silicate mineral of the group pyroxene. It is available in a chromium-rich gem variety and is called as chrome diopside in bright color. The stone is relatively soft.
A group of dark-colored igneous rocks composed primarily of the minerals plagioclase feldspar and clinopyroxene, with minor orthopyroxene.
Gangue material
The non-metalliferous or waste metalliferous mineral in the ore.
Jadeite, an aggregate of granular pyroxenes, actually is not related to nephrite, an aggregate of fibrous amphiboles.
Those who are interested in gemmology will know that, together with diopside, jadeite and three other kinds of mineral, the spodumens make up the pyroxene group, the word pyroxene being derived from the Greek words pyr (fire) and xenos (stranger).
Enstatite is a relatively common mineral and is found in metamorphic and some igneous rocks as well as in stony and iron meteorites.Enstatite is an orthopyroxene or a pyroxene with an orthorhombic symmetry.
Identification in hand sample:
Colour, cleavage and hardness are indicative of a pyroxene. Augite has 2 cleavage planes at 90°.
Associations:
Found in mafic to ultramafic rocks, and in high-grade metamorphs.
Other mineral inclusions such as olivine, garnet, pyroxene, spinel, ruby, rutile and zircon are known as guest minerals in diamonds.
Diamond girdle ...
Granite
A common igneous rock composed of quartz, orthoclase, and hornblende, often accompanied by pyroxene or mica. It is called granite because of the granular surface. Granite is frequently used for buildings and monuments.
Basalt: A dark volcanic rock, often with a glassy appearance, composed chiefly of plagioclase, pyroxene, and olivine.
Base Metal: The collective term for any and all non-precious metals.
hornblende, tridymite, hematite, bixbyite, spessartine, pyroxenes, and topaz.
Locals:
Misc: ...
The mineral diopside is the magnesium-rich member of the clinopyroxene group.
If there is a good pinacoidal cleavage parallel to the b axis (as in the mineral orthoclase), then it is usually called the basal cleavage. In the monoclinic pyroxenes and amphiboles, where there are 2 equivalent cleavage directions, ...
The other mineral species known as Jade is Jadeite, which is a variety of Pyroxene. Nephrite Jade is an ornamental stone used in carvings, beads or cabochon cut gemstones. Mohs Scale hardness is 6 - 6.5.
In the 19th Century , it was discovered that the material from the new world was not the same mineral as the jade from China. The mineral from Central America, a pyroxene, was called jadeite to distinguish it from the original nephrite.
Jade and Nephrite are considered Jade, the only difference is their chemical makeup. These are ornamental stones and are two forms of silicate. Jadeite is pyroxene while Nephrite is a form of amphibole.
 See also: Mineral, Crystal, Minerals, Color, Stone
  
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