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Pyroxene

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pyroxene , name given to members of a group of widely distributed rock minerals called metasilicates in which magnesium, iron, and calcium, often with aluminum, sodium, lithium, manganese, or zinc occur as X in the chemical formula XSiO 3 .
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Pyroxene - The pyroxenes are a group of important rock-forming silicate minerals found in many igneous and metamorphic rocks. They share a common structure consisting of single chains of silica tetrahedra and they crystallize in the monocli...
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Pyroxene is not aluminum. Pyroxene minerals are common in in meteorites and the extrusive igneous rock called basalt. ChaCha on!
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Answers to Other Common Questions
Calcite has rhombohedral cleavage, a hardness of 3 and fizzes in in HCl. Feldspar has elongated cleavage, orthoclase (K-feldspar) is typically pink, plagioclase has striations on its surface and it typically white/grey. Pyroxene has elongat...
http://answers.yahoo.com/question/index?qid=20071208093...
Pyroxene minerals are found chiefly in igneous and metamorphic rocks and in lunar rocks.
http://qanda.encyclopedia.com/question/pyroxene-mineral...
At depths near the Transition zone in the earths upper mantle the two most common minerals are believed to be both Olivine and Pyroxene. In recent experiments using high pressure and temperature research to simulate conditions similar to th...
http://www.mpi.stonybrook.edu/summerscholars/2003/
It points you towards things. It points you more towards a basic rather than a silicious rock. You've got to be careful because you can have a (unclear) or rhyolite or something, which can have pyroxene in, which is basically pure quartz,...
http://www.cse.unsw.edu.au/%7Ecs9416/sisyphus/Protocols...
pyroxene , name given to members of a group of widely distributed rock minerals called metasilicates in which magnesium, iron, and calcium, often with aluminum, sodium, lithium, manganese, or zinc occur as X in the chemical formula XSiO 3 .
http://qanda.encyclopedia.com/question/chemical-formula...
what is feldspar made of? The feldspars are a family of silicate minerals which occur in igneous rocks. There are many different members to the feldspar group. Obviously, silica and oxygen form the foundation for the group, but calcium, so...
http://wiki.answers.com/Q/What+common+items+are+made+us...
The streak color will vary depending on the type of pyroxene mineral.
http://wiki.answers.com/Q/What+color+streak+does+pyroxe...