Garnierite Mineralization from Falcondo Ni-Laterite Deposit (Dominican Republic) [PDF]
, 2017 Mine geologists use the term "garnierite" for the green Ni-rich silicate minerals that occur in many Ni-laterite deposits. However, garnierite is not a mineral species recognized by the Commission on New Mineral and Mineral Names (CNMMN).
Bloise, G. +7 more
core
Mineralogía del Macizo Ultramáfico de Tapo (Cordillera Oriental Andina, Perú) [PDF]
, 2009 En el Perú se conocen escasos complejos ultramáficos, a diferencia de lo que ocurre en otros países de la región (Colombia, Ecuador, Brasil, etc.) o del Caribe, como Cuba (Pereira et al., 2004). Dichos complejos son habitualmente de dimensiones reducidas
Acosta, Jorge +5 more
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Chromitites: An Enigmatic Mantle Rock Type
Chigaku Zasshi (Jounal of Geography), 2010 Various characteristics of podiform chromitites, an enigmatic mantle rock member, are reviewed in this article. Chromitites are composed of chromian spinel, with the general formula (Mg, Fe2+)(Cr, Al, Fe3+)2O4, and silicates (mainly olivine). The Fe3+ content is generally very low, being less than 0.1 to all trivalent cations, in mantle chromian ...
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Geologica Acta, 2009 Mantle tectonites from Eskisehir (NW-Turkey) include high-Cr chromitites with limited variation of Cr#, ranging from 65 to 82. Mg# ratios are between 54 and 72 and chromite grains contain up to 3.71 wt% Fe2O3 and 0.30 wt% TiO2.
I. UYSAL +5 more
doaj
Strontium isotope stratigraphy through the Flatreef PGE-Ni-Cu mineralization at Turfspruit, northern limb of the Bushveld Igneous Complex: evidence of correlation with the Merensky Unit of the eastern and western limbs. [PDF]
Miner Depos, 2021 Mayer CC +4 more
europepmc +1 more source
Geología de las ultramafitas pre-andinas de Tapo y Acobamba, Tarma, en la Cordillera Oriental de Perú [PDF]
, 2009 Ultramafic rocks occur scattered along a 300 km long NNW-SSE trending belt, parallel to the central Peruvian Andes in the Cordillera Oriental, from Tarma (Junín Dept.) to Huancapallac and Tingo María (Huánuco Dept.).
Acosta, Jorge +6 more
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Chemical Characterization of Chromite from the Crominia and Mairipotaba Massifs, Goiás, Brazil [PDF]
Geologia USP. Série Científica, 2010 Metaultramafi c bodies tectonically emplaced within the metasedimentary sequence of the Araxá Group are associatedwith an ophiolitic melange in southeast Goiás. In the region of Cromínia - Mairipotaba, they occur as lenticular bodiesaligned E-W. Cumulate
Nélson Angeli +3 more
doaj
Ophiolites in the Eastern Cordillera of the central Peruvian Andes
, 2010 A discoutinuous NNW-SSE trending belt of scattered ultraiuafic (UM) and subordínate mafic (M) rocks ís exposed alona some 250 km in the Eastern Cordillera of the peruvian Andes (Junin and Huanuco Departnients. -°"-12° S).
Acosta, Jorge +4 more
core
Chromitite deposits of Ufaley ultramafic massif (South Urals)
GeoresursyData on the morphology, composition, textural and structural features of chromite deposits of the Ufaley ultramafic massif are presented. The mineralogical and compositional features of the host ultramafic rocks allow us to interpret them as depleted ...
D. E. Saveliev
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Hydrothermal Pt mineralization in ophiolitic chromitites [PDF]
Goldschmidt2021 abstracts, 2021 Júlia Farré de Pablo +6 more
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