orthopyroxene

The pyroxenes are a group of important rock-forming inosilicate 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 monoclinic and orthorhombic systems. Pyroxenes have the general formula XY(Si,Al)2O6 (where X represents calcium, sodium, iron+2 and magnesium and more rarely zinc, manganese and lithium and Y represents ions of smaller size, such as chromium, aluminium, iron+3, magnesium, manganese, scandium, titanium, vanadium and even iron+2). Although aluminium substitutes extensively for silicon in silicates such as feldspars and amphiboles, the substitution occurs only to a limited extent in most pyroxenes.

For more information about orthopyroxene check the Wikipedia article here

ZME Science posts about orthopyroxene

Volcanic crystals might predict next big eruption

Fri, May 25, 2012

0 Comments

Analysis of crystal formed in the molten rocks of a volcano might predict volcanic eruptions with as much as a year in advance, researchers claim. Mixing Seismology and Petrology Drawing data from the volcanic activity of Mount Helens from 1980 through 1986, geologists found that iron- and magnesium-rich crystals grow before an eruption, and by [...]

forensic petrology, igneous, igneous petrology, magmatic, orthopyroxene, pyroxene, volcanic, volcanic eruption, volcano eruption

You are here: ZME Science » orthopyroxene

Subscribe for FREE!

Popular This Week

Drop us a line!

Tip us on news, scientific reports and studies, scientific advances, science art, interesting phenomena or any kind of science related material. Just write to andrei@zmescience.com.