 | | Journal (article/letter/editorial) | | ArchcanKomatiite-Related InyalaChromitite,Southern Zimbabwe HUGH ROLLINSON Department of Geography andGeology...K. Abstract Thechromitites at theInvalamine,Zimbabwe, formpartof a layeredintrusion enclosed •vithintheArchcan...unalteredkomatiites fromthe Belingwe greenstone belt,Zimbabwe, strongly suggest thatsomeoftheoriginal olivine...1995a),suggesting thattheyhaveoriginated southern Zimbabwe. It represents a zoneof granulitefacies froma...and subsequentbetweenthe northmarginalzoneandthe Zimbabwe eraton metamorphism (Evansand Frost,1975).This |  | | Journal (article/letter/editorial) | | Northern Marginal Zone of the Limpopo Belt in Zimbabwe, the ca 3.0 Ga Fiskenaesset Anorthosite Complex...Mantle oxidation 3. ca 2.7 Ga chromitites from the Inyala and Rhonda ultramafic complexes, the Northern Marginal...the Limpopo Belt, Zimbabwe PT The Inyala and Rhonda ultramafic complexes in Zimbabwe are located in the...crust of the Zimbabwe Craton SC (Blenkinsop, 2011; Rollinson, and Whitehouse, 2011). The Inyala ultramafic...part of this crustal section, and suggest that the Inyala ultramafic body crystallised from a komatiitic |  | | Journal (article/letter/editorial) | | Komatiitic Sill-hosted Chromite Deposits in the Zimbabwe Craton M. D. PRENDERGAST † Guesachan, Shielhill...greenstone-gneiss terrain in the south-central part of the Zimbabwe craton and in granulite grade equivalents in the...greenstone remnants in the Northern Marginal zone (e.g., Inyala, Rhonda); (2) mid-Archean deposits within the ca...komatiitic magmatism and notably abundant in the Zimbabwe craton. Widely distributed in the southern part...published and unpublished information and the author’s mine-site investigations) and discusses the parental |  | | Journal (article/letter/editorial) | | rest consists of olivine with small amounts of phlogopite. Chromite grains are anhedral with slightly curved...inclusions. The inclusions in chromite are olivine, phlogopite, pentlandite and pyrrhotite. A rare type of inclusion...mainly made up of olivine with small amounts of phlogopite. The grain size of chromite is up to a few hundred...chromitites. Inclusions comprise olivine and phlogopite as well as some pentlandite. Chromite in harzburgites...Kerrich, 1992) and massive Archaean chromitites from Inyala (Rollinson, 1997). The Belingwe komatiites are |  | Yudovskaya, Marina A., Naldrett, Anthony J., Woolfe, Jonathan A. S., Costin, Gelu, Kinnaird, Judith A. (2015) Reverse Compositional Zoning in the Uitkomst Chromitites as an Indication of Crystallization in a Magmatic Conduit. Journal of Petrology, 56 (12) 2373-2394 doi:10.1093/petrology/egv062 | Journal (article/letter/editorial) | | (Gauert et al., 1995; de Waal et al., 2001). Nkomati Mine began production from the ‘Massive Sulphide Body’...(Theart & Nooy, 2001). It is now mined out and the mine currently exploits two separate disseminated Ni–Cu–Co–PGE...ubiquitous chromitite layer, referred to at the mine as the ‘Massive Chromitite’. A chromite concentrate...India (Chakraborty & Chakraborty, 1984), Inyala in Zimbabwe (Rollinson, 1997), Ipueira–Medrado in Brazil...borehole LM6, situated 9 km NW down-plunge of the mine area (Figs 1–3). Proportions of chromite in the |  | | Report (chapter) | | dolomite. There are also rounded inclusions of phlogopite 5–10 mm across, the shape of which suggests that...inclusion-free rim, an inclusion zone containing rounded phlogopite inclusions and an inclusion-free core. (h) Scanning...komatiitic intrusions from Shurugwe, Zimbabwe (Stowe 1987) and Inyala, Zimbabwe (Rollinson 1997). These observations...Sub-Saharan Economic Geology. Geological Society of Zimbabwe, Special Publication, 3, 7– 23. Rollinson, H.... The Archaean komatiite-related Inyala chromitite, southern Zimbabwe. Economic Geology, 92, 98–107. Rollinson |  | | Journal (article/letter/editorial) | | net-textured chromitite (Mg# = 96 - 97). The euhedral phlogopite inclusions of in chromites from the Sindhuvalli...Cr2O3 (~ 3.51 wt. %). Clinopyroxene (along with phlogopite) re inclusions always occur as independent...Doddakanya, and Talur mining areas in the Mysore na district of Karnataka are part of Sargur greenstone belt...Doddakanya, and Talur mining areas in the Mysore of district of Karnataka. As these rocks are part of a deformed...The Sargur greenstone belt extends from Mysore district in the Karnataka state to further south to the |  | Santosh, M., He, Xiao-Fang, Waterton, Pedro, Szilas, Kristoffer, Pearson, D. Graham (2020) Chromitites from an Archean layered intrusion in the Western Dharwar Craton, southern India. Lithos, 376. 105772pp. doi:10.1016/j.lithos.2020.105772 | Journal (article/letter/editorial) | | Geosciences Beijing, No. 29 Xueyuan Road, Haidian District, Beijing 100083, China Centre for Tectonics Resources...ultramafic rocks including dunite, peridotite, and phlogopite-rich clinopyroxenite occur with massive chromitite...Geosciences Beijing, No. 29 Xueyuan Road, Haidian District, Beijing 100083, China. E-mail addresses: m.santosh@adelaide...have been variably serpentinised. The abandoned mine at Doddakanya exposes large vertical sections of...of serpentinites, peridotites, dunites and phlogopite-bearing clinopyroxenite, traversed by a network |  | | Journal (article/letter/editorial) | | Detailed map and stratigraphic section (underground mine) of the Medrado segment. Adapted from Mineração...5 mm), intercumulus plagioclase (up to 5 mm), phlogopite, and serpentine. Accessories are cumulus chromite...intercumulus hydrous phases, such as amphibole and phlogopite, occur in patches (up to 5 mm across) closely...decreases toward the top where it is absent. Phlogopite (0–30 vol %) is also common in norites, mainly...minerals. Apatite is closely associated with phlogopite. Primary igneous plagioclase and amphibole (Mg |  | | Journal (article/letter/editorial) | | work Hou, Cao, & Wang, 2003; Zhu et al., 2010), Zimbabwe Craton reported that the ~2.5 Ga Neoarchean Bundelkhand...frame in BkC (Saha et al., 2011). stone belt, Zimbabwe [Nisbet et al., 1987]; Kalgoorlie Terrane of ...Platinum mineralization in Ikauna Area, Lalitpur district, Uttar Pradesh. Journal of Geological Society...komatiites from the Belingwe greenstone belt, Zimbabwe. Geology, 15, 1147–1150. Niu, Y., Waggoner, D...komatiitic sill‐hosted chromite deposits in the Zimbabwe craton. Economic Geology, 103(5), 981–1004. Radhakrishna |  | | Report (issue) | | 195 Zambia . . . . . . . . . . . . . . . . 203 Zimbabwe . . . . . . . . . . . . . . . 213 Other Countries...of diversified experience in mineral exploration, mine design, development, and operations, as well as...chromite resulting from cutbacks in South Africa and Zimbabwe, and of phosphate rock owing to a lower output...cobalt, copper, and diamond; Zambia for cobalt; and Zimbabwe for chromium and lithium. U.S. exports to Africa...In Botswana, Gabon, Namibia, South Africa, and Zimbabwe, relatively successful diversification bas grown |  | | Book | | Mineralization 4.10. A Comprehensive Example: The Cree de District, Colorado, USA 4.11. Summary 4.12. Recommended...disseminating the information, the mine geologists and mine managers who have made the mine visits a rewarding experience...concentration required to achieve the break-even point for a mine in terms of revenue and costs. Any detailed exploration...South Africa Stillwater Complex, USA Great Dyke, Zimbabwe Sudbury Complex, Canada Chromite, Ni-Cu sulfide...mportant examples Bushveld, South Africa Great Dyke, Zimbabwe Sudbury, canada Bushveld, South Africa Bushveld |
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