• Thumbnail for Pyroxenite
    Pyroxenite is an ultramafic igneous rock consisting essentially of minerals of the pyroxene group, such as augite, diopside, hypersthene, bronzite or enstatite...
    6 KB (749 words) - 19:20, 18 January 2024
  • matrix Pumice – Extremely vesicular volcanic rock, typically light-colored Pyroxenite – Igneous rock - a coarse grained plutonic rock composed of >90% pyroxene...
    14 KB (2,187 words) - 23:33, 16 April 2024
  • Thumbnail for Bushveld Igneous Complex
    phlogopite. The UG2 chromitites are underlain by pyroxenite footwall that is distinct from hanging wall pyroxenite. Chromite subhedral to subrounded (less than...
    55 KB (6,219 words) - 09:00, 14 August 2024
  • Thumbnail for Kosvinsky Kamen
    Kosvinsky Rock as "mountain massif" of height 1,519 m. Its constitution is pyroxenites and dunites of lower and middle Paleozoic era. The slopes are covered...
    4 KB (343 words) - 19:17, 15 June 2024
  • Thumbnail for Peridotite
    rock in which the fraction of pyroxenes exceeds 60% are classified as pyroxenites rather than peridotites. Pyroxenes are typically dark in color. Hornblende...
    32 KB (3,793 words) - 16:10, 25 August 2024
  • Thumbnail for Basalt
    melts that produce basaltic magma probably include both peridotite and pyroxenite. The shape, structure and texture of a basalt is diagnostic of how and...
    69 KB (7,809 words) - 04:19, 9 September 2024
  • Thumbnail for Dunite
    layered intrusions, associated with cumulate layers of wehrlite, olivine pyroxenite, harzburgite, and even chromitite (a cumulate rock consisting largely...
    6 KB (717 words) - 12:56, 29 July 2024
  • Thumbnail for Ruthenium
    are also found in pentlandite extracted from Sudbury, Ontario, and in pyroxenite deposits in South Africa. Ruthenium, a polyvalent hard white metal, is...
    50 KB (5,761 words) - 09:53, 4 September 2024
  • Thumbnail for Amphibolite
    granulite facies conditions. Uralite is a particular hydrothermally altered pyroxenite; during autogenic hydrothermal circulation the primary mineralogy of pyroxene...
    9 KB (1,012 words) - 14:30, 9 January 2024
  • Thumbnail for Geography of Karnataka
    minerals found in this region are dolomite, limestone, gabbro, quartzite, pyroxenite, manganese and iron ores and metabasalt. The Proterozoic non-fossiliferous...
    20 KB (2,100 words) - 00:26, 28 June 2024
  • Thumbnail for Ol Doinyo Lengai
    consist of gneiss and other metamorphic rocks, as well as ijolites, pyroxenites, and urtites. The carbonatite lavas are rapidly chemically modified by...
    33 KB (3,673 words) - 17:31, 3 September 2024
  • Thumbnail for Black Forest
    range of exotic inclusions: gabbro from Ehrsberg, serpentinites and pyroxenites near Todtmoos, norite near Horbach), which are possibly the remnants...
    91 KB (9,651 words) - 16:49, 7 September 2024
  • Thumbnail for Pyroxene
    A sample of pyroxenite (meteorite ALH84001 from Mars), a rock consisting mostly of pyroxene minerals...
    13 KB (1,476 words) - 22:03, 13 August 2024
  • Thumbnail for Ultramafic rock
    crystallized. The ultramafic intrusives include the dunites, peridotites and pyroxenites. Other rare varieties include troctolite which has a greater percentage...
    9 KB (1,059 words) - 17:30, 10 September 2024
  • Thumbnail for Lherzolite
    contains harzburgite and dunite, as well as layers of spinel pyroxenite, garnet pyroxenite, and hornblendite. The layers represent partial melts extracted...
    3 KB (314 words) - 19:23, 18 January 2024
  • Thumbnail for Phalaborwa
    Foskor's Mining Division in Phalaborwa mines phosphate rock (foskorite and pyroxenite), from which Foskor's Acid Division in Richards Bay produces phosphoric...
    7 KB (500 words) - 22:19, 10 July 2024
  • Thumbnail for Vermiculite
    at the contact between felsic and mafic or ultramafic rocks such as pyroxenites and dunites. It also occurs in carbonatites and metamorphosed magnesium-rich...
    24 KB (2,772 words) - 17:58, 8 September 2024
  • the 48th Edition of the Handbook of Chemistry and Physics on page E-4. Pyroxenite 4.3 ± 0.1 List: Birch and Clark in Robertson, page 31. 300 This summary...
    139 KB (4,006 words) - 08:04, 3 July 2024
  • Thumbnail for Borra Caves
    77 sq mi); surrounded by diopside–scapolite–feldspar calc-granulites. The pyroxenite outcrops are dark and massive and include discontinuous calc-silicate...
    19 KB (1,904 words) - 04:46, 17 June 2024
  • Thumbnail for Hogenakkal Falls
    Rao, B; Parthasarathy, R; Kumar, Anil; Gopalan, K (1994). "2.0 Ga old pyroxenite-carbonatite complex of Hogenakal, Tamil Nadu, South India". Precambrian...
    11 KB (1,058 words) - 20:06, 25 June 2024
  • Thumbnail for Websterite
    equal proportions of orthopyroxene and clinopyroxene. It is a type of pyroxenite. Websterite is named after the town Webster in North Carolina. Rogers...
    1 KB (60 words) - 10:47, 1 October 2023
  • are also found in pentlandite extracted from Sudbury, Ontario, and in pyroxenite deposits in South Africa. The industrial extraction of rhodium is complex...
    27 KB (2,815 words) - 06:46, 21 August 2024
  • Thumbnail for Enstatite
    En90Fs10 in composition, is an essential mineral in typical peridotite and pyroxenite of the Earth's mantle. Xenoliths of peridotite are common in kimberlite...
    9 KB (858 words) - 07:53, 26 August 2024
  • Thumbnail for Flow banding
    Flow banding at the rim of a peridotite intrusion. Dark and green pyroxenite bands at the bottom represent the melt, brownish lherzolite bands at the top...
    2 KB (194 words) - 07:25, 21 October 2023
  • Thumbnail for Zabargad Island
    Layers of spinel-lherzolites with anhydrous Al-diopside pyroxenites and hydrous Cr-diopside pyroxenites can be found too on the island.[citation needed] Pliny...
    5 KB (623 words) - 14:32, 7 February 2024
  • the USGS geological party in the Pensacola Mountains, 1978-79, from the pyroxenite rock which forms a conspicuous dark layer along the cliffs of the promontory...
    7 KB (1,286 words) - 14:01, 21 March 2024
  • Thumbnail for Kassite (mineral)
    crystals are very brittle. It was first described in 1965 in the Afrikanda pyroxenite massif, a formation on Russia's Kola Peninsula and was named for Nikolai...
    3 KB (140 words) - 08:29, 24 November 2022
  • Thumbnail for Sapphirine
    Mg-Al-spinel and Ca-Tschermak-rich clinopyroxene in corundum-bearing mantle pyroxenites. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical...
    8 KB (698 words) - 18:56, 26 June 2024
  • Thumbnail for Bronzite
    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...
    4 KB (525 words) - 02:29, 21 June 2024
  • Thumbnail for Attappadi taluk
    ultramafics and mafic rocks (Ultramafic and mafic rocks represented by meta pyroxenite, talc-tremolite-actinolite schist, and amphibolites) of varying dimensions...
    25 KB (2,586 words) - 08:04, 19 August 2024