Definition of Pyroxenes. Meaning of Pyroxenes. Synonyms of Pyroxenes

Here you will find one or more explanations in English for the word Pyroxenes. Also in the bottom left of the page several parts of wikipedia pages related to the word Pyroxenes and, of course, Pyroxenes synonyms and on the right images related to the word Pyroxenes.

Definition of Pyroxenes

Pyroxene
Pyroxene Pyr"ox*ene, n. [F. pyrox[`e]ne, from Gr. ? fire + ? a stranger; -- so called because it was supposed to the be a stranger, or of rare occurrence, in igneous rocks,] (Min.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90[deg], and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basalt, gabbro, etc. Note: The pyroxene group contains pyroxene proper, also the related orthorhombic species, enstatite, bronzite, hypersthene, and various monoclinic and triclinic species, as rhodonite, etc.

Meaning of Pyroxenes from wikipedia

- pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes...
- The pyroxene pallasite grouplet is a subdivision of the pallasite meteorites (stony-irons). The grouplet is named "pyroxene pallasites" because they are...
- Ultramafic rock in which the fraction of pyroxenes exceeds 60% are classified as pyroxenites rather than peridotites. Pyroxenes are typically dark in color. Hornblende...
- rhombohedral and basal parting in corundum, and the basal parting in pyroxenes. Cleavage is a physical property traditionally used in mineral identification...
- and general characteristics they are similar to the pyroxenes. The chief differences from pyroxenes are that (i) amphiboles contain essential hydroxyl...
- pigeonite and orthopyroxene: when occurring with either of these other pyroxenes, the calcium content of augite is a function of temperature and pressure...
- double-chain silicates and the pyroxenes are single-chain silicates, the angle between their cleavage planes is different. The pyroxenes cleave in two directions...
- clinopyroxenites, orthopyroxenites, and the websterites which contain both types of pyroxenes (see diagram below). Closely allied to this group are the hornblendites...
- primarily in metamorphic rocks. The pyroxene quadrilateral easily records the compositions of different pyroxenes contained in igneous rocks, such as...
- melted allowing the liquid water to react with and alter the olivines and pyroxenes. The formation of rivers and lakes on the asteroid is thought to have...