Harzburgite, an ultramafic, igneous rock, is a variety of peridotite consisting mostly of the two minerals olivine and low-calcium (Ca) pyroxene (enstatite);...
4 KB (506 words) - 19:24, 18 January 2024
Mount Olympus is formed of ultramafic rock, dominantly serpentinized harzburgite which is part of the Troodos ophiolite. The Mount Olympus Ski resort...
4 KB (370 words) - 05:10, 24 August 2023
From 40% to 90% olivine and less than 5% hornblende Harzburgite: less than 5% clinopyroxene Harzburgite makes up the bulk of the peridotite layer of ophiolites...
32 KB (3,793 words) - 16:02, 4 April 2024
formation in mantle sections is by interaction between lherzolite or harzburgite and percolating silicate melts, which dissolve orthopyroxene from the...
6 KB (717 words) - 01:30, 26 July 2023
first proposed by Ted Ringwood (1962) as being 1 part basalt and 4 parts harzburgite, but later was revised to being 1 part tholeiitic basalt and 3 parts...
13 KB (1,440 words) - 20:15, 16 March 2024
known from the lower ultramafic part of ophiolite complexes (although harzburgite is more common in this setting), from alpine-type peridotite massifs...
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contains quartz and alkali feldspar in characteristic angular intergrowths Harzburgite – Ultramafic mantle rock Hornblendite – Plutonic rock consisting mainly...
14 KB (2,208 words) - 23:33, 16 April 2024
ferromagnesian minerals in mafic and ultramafic rocks, such as dunite, harzburgite, or lherzolite. These are rocks low in silica and composed mostly of...
30 KB (3,139 words) - 20:16, 5 January 2024
thick. Lithologies vary from largely ultramafic peridotite, chromitite, harzburgite, and bronzitite in the lower sections to mafic norite, anorthosite, and...
55 KB (6,207 words) - 19:28, 12 May 2024
a chemical discontinuity between ultramafic cumulates and tectonized harzburgites, which has been observed from deep parts of the oceanic crust that have...
32 KB (3,140 words) - 20:39, 15 July 2024
kimberlite eruption samples them. Host rocks in a mantle keel include harzburgite and lherzolite, two type of peridotite. The most dominant rock type in...
139 KB (14,989 words) - 03:22, 16 July 2024
(2010). "Diogenites as polymict breccias composed of orthopyroxenite and harzburgite". Meteoritics and Planetary Science. 45 (5): 850–872. Bibcode:2010M&PS...
3 KB (179 words) - 17:07, 2 February 2024
peridotite nodules are pieces of mantle rock modified by partial melting. Harzburgite peridotites represent the crystalline residues after extraction of melts...
23 KB (2,569 words) - 05:11, 19 May 2024
Napoleonite Dunite Essexite Foidolite Gabbro Granite Granodiorite Granophyre Harzburgite Hornblendite Hyaloclastite Icelandite Ignimbrite Ijolite Kimberlite Komatiite...
7 KB (547 words) - 05:09, 26 June 2024
inclusions in diamond contain less Cr2O3 whereas peridotite (lherzolite and harzburgite) garnet inclusions have less CaO. Eclogite and peridotite are the two...
23 KB (2,177 words) - 07:56, 15 April 2024
by dunites and harzburgites, where the most significant ore bodies are found. The central zone of the massif is composed of harzburgites and lherzolites...
4 KB (358 words) - 00:35, 19 June 2023
minerals that settled out from a magma chamber. Tectonized peridotite: harzburgite/lherzolite-rich mantle rock. A Geological Society of America Penrose...
32 KB (3,876 words) - 01:55, 27 March 2024
structures Serpentinite with relict mineral structures suggesting parental harzburgite (described as massive, homogeneous with thin dunite layers) Underlying...
6 KB (651 words) - 06:25, 13 August 2023
and occasionally melilite and sodalite. The rocks contain xenoliths of harzburgite, lherzolite and peridotite. Sulfur occurs within the crater of the scoria...
23 KB (2,510 words) - 15:17, 3 February 2024
; Farley K. A.; Turner G. (1998). "Multiple fluid pulses in a Samoan harzburgite". Chemical Geology. 147 (1–2): 99–114. Bibcode:1998ChGeo.147...99B. doi:10...
21 KB (2,408 words) - 19:03, 1 April 2024
Inclusions and nodules are formed by clinopyroxenite, dunite, gabbro, harzburgite, lherzolite, peridotite, spinel and wehrlite Formerly it was dated to...
42 KB (4,798 words) - 11:53, 3 December 2023
(2010). "Diogenites as polymict breccias composed of orthopyroxenite and harzburgite". Meteoritics and Planetary Science. 45 (5): 850–872. Bibcode:2010M&PS...
8 KB (787 words) - 08:25, 29 November 2023
exposed in the ophiolite are the peridotite varieties of lherzolite, harzburgite and dunite. Peltonen, P., & Kontinen, A. (2004). The Jormua Ophiolite:...
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County, Massachusetts, US Fayalite: Horta, Fayal Island, Azores, Portugal Harzburgite: Bad Harzburg, Germany Icelandite: Thingmuli (Þingmúli), Iceland Ijolite:...
9 KB (696 words) - 20:08, 26 January 2024
the overriding Philippine plate. The Mariana fore-arc peridotite has a harzburgite composition, thus it contains mostly olivine and orthopyroxene (enstatite)...
16 KB (1,687 words) - 01:47, 9 July 2024
pyroxene with very little silica content. Peridotite (primarily spinel harzburgite) minerals undergo serpentinization and form magnetite and serpentine...
34 KB (3,778 words) - 02:15, 9 January 2024
and FARID CHEMALE-JÚNIOR. 2003. Mid amphibolite facies metamorphism of harzburgites in the Neoproterozoic Cerro Mantiqueiras Ophiolite, southernmost Brazil...
13 KB (1,337 words) - 09:26, 31 July 2023
Tanganyika 3.328 6.64 7.30 7.46 7.71 Jadeite Burma 3.331 8.45 — 8.69 8.78 Harzburgite Bushveld Complex 3.369 6.9 7.74 7.81 7.95 Eclogite Kimberley 3.376 7...
10 KB (668 words) - 21:51, 18 May 2024
Elovskoe deposit were formed by conversion of ultramafites of Kola dunite-harzburgite massif. Ore field is stretched meridionally as a crescent-shaped lode...
7 KB (532 words) - 10:51, 5 October 2022
element (K, Ba, Cs, Rb) enrichment in sources enriched peridotite (variety harzburgite), especially in potassium pyroxene and phlogopite-rich volumes within...
5 KB (529 words) - 12:28, 31 December 2023