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- Bronzite abstract "Bronzite is a member of the pyroxene group of minerals, belonging with enstatite and hypersthene to the orthorhombic series of the group. Rather than a distinct species, it is really a ferriferous variety of enstatite, which owing to partial alteration has acquired a bronze-like sub-metallic luster on the cleavage surfaces.Enstatite is magnesium silicate, MgSiO3, with the magnesium partly replaced by small amounts (up to about 12%) of Fe+2. In the bronzite variety, (Mg,Fe)SiO3, the iron(II) oxide ranges from about 12 to 30%, and with still more iron there is a passage to hypersthene. The ferriferous varieties are liable to a particular kind of alteration, known as schillerization, which results in the separation of the iron as very fine films of oxide and hydroxides along the cleavage cracks of the mineral. The cleavage surfaces therefore exhibit a metallic sheen or schiller, which is even more pronounced in hypersthene than in bronzite. The color of bronzite is green or brown; its specific gravity is about 3.3–3.4, varying with the amount of iron present. The refractive indices and optic angle increase with iron content. The enstatite endmember has a positive optic sign, whereas bronzite and hypersthene both show a negative optic sign.Like enstatite, bronzite is a constituent of many mafic to ultramafic igneous rocks, such as, norite, gabbro, and especially peridotite, and of the serpentinites which have been derived from them. It also occurs in some crystalline schist. Bronzitite, a pyroxenite of bronzite composition, is noted in the cumulate rocks of the Stillwater igneous complex of Montana.".
- Bronzite thumbnail Enstatite-pas-146b.jpg?width=300.
- Bronzite wikiPageID "1179857".
- Bronzite wikiPageRevisionID "603745830".
- Bronzite hasPhotoCollection Bronzite.
- Bronzite subject Category:Iron_minerals.
- Bronzite subject Category:Orthorhombic_minerals.
- Bronzite subject Category:Pyroxene_group.
- Bronzite type Abstraction100002137.
- Bronzite type IronMinerals.
- Bronzite type Material114580897.
- Bronzite type Matter100020827.
- Bronzite type Mineral114662574.
- Bronzite type OrthorhombicMinerals.
- Bronzite type Part113809207.
- Bronzite type PhysicalEntity100001930.
- Bronzite type Relation100031921.
- Bronzite type Substance100019613.
- Bronzite comment "Bronzite is a member of the pyroxene group of minerals, belonging with enstatite and hypersthene to the orthorhombic series of the group. Rather than a distinct species, it is really a ferriferous variety of enstatite, which owing to partial alteration has acquired a bronze-like sub-metallic luster on the cleavage surfaces.Enstatite is magnesium silicate, MgSiO3, with the magnesium partly replaced by small amounts (up to about 12%) of Fe+2.".
- Bronzite label "Bronzite".
- Bronzite label "Bronzite".
- Bronzite label "Bronzyt".
- Bronzite sameAs Bronzite.
- Bronzite sameAs Bronzyt.
- Bronzite sameAs m.04dz17.
- Bronzite sameAs Q849995.
- Bronzite sameAs Q849995.
- Bronzite sameAs Bronzite.
- Bronzite wasDerivedFrom Bronzite?oldid=603745830.
- Bronzite depiction Enstatite-pas-146b.jpg.
- Bronzite isPrimaryTopicOf Bronzite.