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Diorite and associated breccia form scattered outcrops on the Marble Hall Fragment, in the vicinity of the town of Marble Hall, Mpumalanga Province, South Africa. The diorite (2055.6 ± 3.1 Ma) intruded as sub-horizontal sills in highly deformed and metamorphosed supracrustal rocks of the Transvaal Supergroup.
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DOI: 10.1016/0012-821X(88)90005-2 Corpus ID: 129162295; Rare earth element geochemistry of an anorthosite-diorite suite, Namaqua mobile belt, South Africa @article{Conradie1988RareEE, title={Rare earth element geochemistry of an anorthosite-diorite suite, Namaqua mobile belt, South Africa}, author={J. Conradie and A. E. Schoch}, journal={Earth and Planetary Science …
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Mesocratic to leucocratic diorite intruded as sills in the deformed Marble Hall Fragment in the vicinity of Marble Hall, Mpumalanga Province, South Africa. A mesocratic variety gives a 207 Pb/ 206 Pb SHRIMP age on zircon of 2055.6 ±3.1 Ma.
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The Poboya Prospect lies along the North Northwest ‐ South Southeast Palu‐Koro Fault Zone in the central part of the West Sulawesi Arc. The geology of the area ... nature and fluid characteristics of the hydrothermal veining crosscutting the Yzerfontein gabbro-diorite, Cape Granite Suite, South Africa. S. Wilson R. Bailie C. Harris S. Dunn ...
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Diorite Street, Carletonville, Gauteng, South Africa Street View not available for this location at this time This is the streetview and map image found for Diorite Street at location Carletonville, Gauteng, in South Africa
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ENGLISH ABSTRACT: The recent suggestion of the existence of a basaltic magma in the South-west Cape Province shortly before the intrusion of the Cape granites is corroborated by the occurrence of a gabbroic body of pre-granite age at Yzerfontein. A detailed study of the primary rhythmic banding and igneous lamination of this body indicates its origi nal form as being sheet …
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The ca. 1100 Ma Namaqualand Metamorphic Complex is host to a number of vein-type monazite-apatite-chalcopyrite-magnetite deposits, which cluster in a approximately 30-km 2 area 160 km south of the Okiep copper district. The largest of these veins, at Steenkampskraal, has been mined intermittently since the late 1950s for thorium.
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Download Citation | Late-magmatic calcite-pyrrhotite-chalcopyrite mineralisation associated with magmatically-evolved diorite, Marble Hall, South Africa | Calcite-pyrrhotite-chalcopyrite veins are ...
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Pretoria / Johannesburg, South Africa, ... Diorite rock is an intrusive material intermediate of gabbro and granite rocks in terms of composition (Austin 1963). It finds location mainly in mountainous landscapes where it occurs in substantial amounts as batholiths. With rock composition of about 5-50% dark minerals
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It is the location of an outcrop of orbicular diorite – a rare rock texture that 'is the result of granitoid magmas separating while in a fluid state, with one granite type forming ovoid 'orbs' showing concentric internal banding, within a groundmass …
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Article on The origin, nature and fluid characteristics of the hydrothermal veining crosscutting the Yzerfontein gabbro-diorite, Cape Granite Suite, South Africa, published in South African Journal of Geology 126 on by S. Wilson+5. Read the article The origin, nature and fluid characteristics of the hydrothermal veining crosscutting the Yzerfontein gabbro …
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Diamonds and Gold in South Africa. Theodore Reunert. ... conglomerate cost creek cyanide CYANIDE PROCESS cylinders Debentures deposits depth Diamond Fields Diamond Mining diggers diggings diorite discovery distance district dividends Dutoitspan dwts east engine exported farm feet formation Geological Gold Mining Company gold-bearing GOLDFIELDS ...
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Asia: Diorite occurs in many parts of Asia, particularly in areas with active tectonic activity and volcanic activity. Countries such as Russia, China, Japan, and India have notable occurrences of diorite. Africa: Diorite is found in various African countries, including South Africa, Zimbabwe, Madagascar, and the Democratic Republic of the ...
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Calcite-pyrrhotite-chalcopyrite veins are pervasively developed in a diorite intrusion (~2.06 Ga), associated calc-silicate hybrid rock, and carbonate country rock in the direct vicinity of Marble Hall, Mpumalanga Province, South Africa. The diorite intrusion is probably sill-like in shape and related to a series of sills that formed a ~500m thick package within the impure siliceous …
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The western Saldania belt in South Africa exposes a section through a fore-arc region that records deformation, sedimentation and plutonism in the late Neoproterozoic and Cambrian (>560 to <510 Ma) along the obliquely convergent continental margin of the Kalahari Craton. The belt comprises two main and structurally overlying units. Imbricated and pervasively transposed …
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The western Saldania belt in South Africa exposes a section through a fore-arc region that records deformation, sedimentation and plutonism in the late Neoproterozoic and …
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The occurrence of high-pressure (HP) garnet-bearing metamorphic rocks in the southern Barberton granitoid–greenstone terrane (BGGT), South Africa, has been proposed as a key indicator of the onset of modern plate tectonics at ca. 3.2 Ga.
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The northwestern part of South Africa and southern South-West Africa/Namibia is amongst the most extensive granulite terranes in Africa. This work reports the results of electron microprobe studies of minerals from two-pyroxene, cordieriteorthopyroxene (-gedrite) (-sapphirine) and garnet and/or cordierite parageneses from Namaqualand, in the N.W. Cape Province of South Africa. …
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Diorite and associated breccia form scattered outcrops on the Marble Hall Fragment, in the vicinity of the town of Marble Hall, Mpumalanga Province, South Africa. The diorite (2055.6 ± 3.1 Ma ...
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Located in South Africa, the BIC contains some of the richest ore deposits on Earth. The complex contains the world's largest reserves of platinum-group metals (PGMs)—platinum, palladium, osmium, iridium, rhodium, and ruthenium—along with vast quantities of iron, tin, chromium, titanium and vanadium.
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Diorite is a coarse-grained igneous rock that forms when magma cools slowly underground. It's made up of plagioclase feldspar, amphibole, and pyroxene minerals, with small amounts of biotite mica. ... Mountains, southern Vancouver Island in Canada, the Basin and Range province and Minnesota in the US, and Concordia in South Africa
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The mafic to felsic rocks at Yzerfontein form part of a composite 535 Ma post-orogenic pluton belonging to the Cape Granite Suite (CGS) of the Pan-African Saldania Belt of southwestern Africa. The pluton ranges from olivine gabbros (mostly at the northern end) to quartz monzonites, with monzonites the most abundant rock type. Minor felsic rocks in the form of quartz …
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The Saldania Belt (SB), located in the southernmost part of South Africa, contains S-, I-, and A-type granites. Whole-rock Sm–Nd data for the Saldania granites indicate the …
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Africa: Diorite is found in various African countries, including South Africa, Zimbabwe, Madagascar, and the Democratic Republic of the Congo. It is often associated with Precambrian shield regions and ancient geological formations.
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Late-magmatic calcite-pyrrhotite-chalcopyrite mineralisation associated with magmatically-evolved diorite, Marble Hall, South Africa
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The Bushveld Complex, South Africa, which has been dated at 2.055 Ga (Scoates and Friedman, 2008) is ... The absence of Ti-magnetite layers and anorthosite from subzone E, which is dominated by ...
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The overall horizontal attitude of the Nama Group in Namibia and South Africa, and the consistent altitude of its lower contact to the basement indicate that no significant non …
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The ∼400 km wide Namaqua–Natal orogenic belt of southern Africa occurs as a series of high-grade tectono-metamorphic terranes that stretch from southern Namibia south-eastwards through the northern Cape Province of South Africa to Kwazulu-Natal on the eastern seaboard (Fig. 1).The Namaqua–Natal orogen lies adjacent to the southern and western …
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anorthosite, biotite diorite, and hypersthenic rocks ranging ... South Africa: it was opened 15 years before Daniel Jacob's children picked up the first alluvial diamond (a 21.75-carat ...
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Calcite-pyrrhotite-chalcopyrite veins are pervasively developed in a diorite intrusion (similar to 2.06 Ga), associated calc-silicate hybrid rock, and carbonate country rock in the direct vicinity of Marble Hall, Mpumalanga Province, South Africa. The diorite intrusion is probably sill-like in shape and related to a series of sills that formed ...
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A swarm of small dyke-like plutons, ranging in composition from anorthosite through diorite and norite, to hypersthenite and glimmerite, occurs in the western part of the Namaqua …
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View article titled, The origin, nature and fluid characteristics of the hydrothermal veining crosscutting the Yzerfontein gabbro-diorite, Cape Granite Suite, South Africa Open the PDF for in another window
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The Richtersveld sub-province straddles the boundary between South Africa and Namibia and comprises a suite of supracrustal sedimentary and volcanic lithologies which formed at ∼2 ... Kawakeup leptite and Okongava Diorite: implications for the onset of rifting and of orogenesis in the Damara belt, Namibia. Commun. Geol. Surv. Namibia
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Mesocratic to leucocratic diorite intruded as sills in the deformed Marble Hall Fragment in the vicinity of Marble Hall, Mpumalanga Province, South Africa. A mesocratic …
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