 | Lord, R. A., Prichard, H. M., S.SA, J. H., Neary, C. R. (2004) Chromite Geochemistry and PGE Fractionation in the Campo Formoso Complex and Ipueira-Medrado Sill, Bahia State, Brazil. Economic Geology, 99 (2) 339-363 doi:10.2113/gsecongeo.99.2.339 | Journal (article/letter/editorial) | | Fractionation in the
Campo Formoso Complex and Ipueira-Medrado Sill, Bahia State, Brazil
R. A. LORD,†
Clean...de Geociências, Universidade Federal da Bahia, Salvador, Brazil
AND C. R. NEARY
Formerly at Natural Environment...retrograde alteration and serpentinization. In Campo Formoso a deeply
eroded stratiform complex contains...orthopyroxene relicts in an upper unit at the Cascabulhos mine.
Microprobe studies of chromite-rich specimens from...for mineralization elsewhere in the sill. At Campo Formoso the alternation of PGE-enriched chromitite and |  | | Journal (article/letter/editorial) | | Ipueira-Medrado Sill,
São Francisco Craton, Bahia State, Brazil
JULIANA CHARÃO MARQUES†
Instituto de Geociências...Caixa Postal 15001, CEP 91501-970, Porto Alegre-RS, Brazil
AND CESAR FONSECA FERREIRA FILHO
Instituto de...Universitário, Asa Norte, Brasília-DF, CEP 70910-900, Brazil
Abstract
The Ipueira-Medrado mafic-ultramafic...mafic-ultramafic sill hosts the largest chromite deposit in Brazil. The sill is a 7-kmlong and 300-m-thick elongated...consisting mainly of interlayered dunite and harzburgite but also containing minor mafic rocks. The most |  | | Journal (article/letter/editorial) | |
Economic Geology, v. 108, pp. 1753–1771
The Limoeiro Deposit: Ni-Cu-PGE Sulfide Mineralization Hosted...Conduit in the Borborema Province, Northeastern Brazil
Jonas Mota-e-Silva,1,2,† Cesar Fonseca Ferreira...01037-912, Brazil
2 Instituto de Geociências, Universidade de Brasília, Brasília, DF. 70910-900, Brazil
Abstract...Abstract
The Limoeiro deposit, located in a high-grade mobile belt of the Brasiliano orogenic cycle (650–500...age of the ultramafic intrusion that hosts the Limoeiro
deposit is not yet known, but regional geologic |  | | Journal (article/letter/editorial) | | Chromite Deposit of the Ipueira±Medrado
Sill, Bahia, Brazil
J. C. MARQUES1 *, C. F. FERREIRA FILHO2 , R...BENTO GONCËALVES 9500, PORTO ALEGRE-RS, 91509-900, BRAZIL
2
INSTITUTO DE GEOCIEÃNCIAS, UNIVERSIDADE DE BRASIÂLIA-UNB...UNIVERSITAÂRIO, ASA NORTE,
BRASIÂLIA-DF, 70910-900, BRAZIL
3
DEPARTMENT OF TERRESTRIAL MAGNETISM, CARNEGIE...Ultramafic Zone (5250 m) consisting of dunite and
harzburgite that host the chromitite layer, in which intercumulus...Marcelo Gama 1038/
404, Porto Alegre-RS, 90540-041, Brazil. Telephone: 55-51-30295030. Fax: 55-51-3221-3298 |  | Mota-E-Silva, Jonas, Prichard, Hazel M., Suárez, Saioa, Ferreira Filho, Cesar F., Fisher, Peter C. (2016) Supergene Alteration of Platinum-Group Minerals and the Formation of Pd-Cu-O and Pd-I-O Compounds In the Limoeiro Ni-Cu-(PGE) Deposit, Brazil. The Canadian Mineralogist, 54 (3) 755-778 doi:10.3749/canmin.1500049 | Journal (article/letter/editorial) | | Pd-Cu-O AND Pd-I-O COMPOUNDS IN THE LIMOEIRO Ni-Cu-(PGE) DEPOSIT,
BRAZIL
JONAS MOTA-E-SILVA
Votorantim Metais...05423-180, Brazil
University of Brasilia, Geosciences Institute, Brası́lia/DF, 70900-970, Brazil
HAZEL M...Geosciences Institute, Brası́lia/DF, 70900-970, Brazil
PETER C. FISHER
School of Earth and Ocean Science...weathering of platinum-group minerals (PGM) in the Limoeiro nickel-copper and platinum-group element
[Ni-Cu-(PGE)]...over the base metal sulfide-rich parts of the Limoeiro primary ore. The mobility of Pt is very
dependent |  | Mota-e-Silva, J., Prichard, H. M., Filho, C. F. Ferreira, Fisher, P. C., McDonald, I. (2015) Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50 (8) 1007-1029 doi:10.1007/s00126-015-0585-0 | Journal (article/letter/editorial) | | Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide
deposit, Brazil: the effect of magmatic and...Springer-Verlag Berlin Heidelberg 2015
Abstract The Limoeiro Ni–Cu–(platinum-group elements
(PGE)) deposit...igneous tubular conduit system in northeastern Brazil.
Representative ores from the deposit have been...13212-161,
Brazil
2
Instituto de Geociências, Universidade de Brasilia,
Brasília, DF 70900-970, Brazil
3
...blebs that
formed and were transported within the Limoeiro magma
conduit.
Keywords Platinum-group-minerals |  | | Book | | born hills appear parallel to Mahagiri range due
to mine-waste dumping. Unpaved roads serve
the movement...The sky is gloomy throughout the
day due to the mine and road dust. Social evils,
crime, alcoholism,...education, counseling, and
training. Making stringent mine-safety rules is not
the solution—it has to be implemented...Ore Group
Orissa Mining Corporation Limited
Run of Mine
Reconnaissance Permit
tonnes
tonnes per annum/day...significant in
Canada, United States, Australia, Africa, Brazil,
New Caledonia, Philippines, Indonesia, and the |  | | Journal (article/letter/editorial) | | for the PGE-mineralized magmatism in Carajás,
Brazil
Eduardo Teixeira Mansur, Cesar Fonseca Ferreira...for the PGE-mineralized magmatism in Carajás, Brazil, LITHOS (2016),
doi:10.1016/j.lithos.2016.09.036...constraints for the PGE-mineralized magmatism in Carajás, Brazil
SC
R
IP
Authors:
Eduardo Teixeira Mansur¹ and...Universidade de Brasília, Brasília-DF, 70910-900, Brazil.
email: etmansur@gmail.com
2
Instituto de Geociências...Universidade de Brasília, Brasília-DF, 70910-900, Brazil.
email: cesarf@unb.br
AC
CE
P
TE
D
Corresponding |  | | Report (issue) | | Zimbabwe.
• Eight industrialized countries4 that mine little or no chromite have a significant (an
estimated...chromium (in the form of ores,
3
A captive mine is a mine that produces solely for the parent company...profit-motive criteria
would normally result in mine closure.
• Chromite supplies have been disrupted...mined-the
platinum-mineral operation (Western Platinum mine) in the UG2 chromitite layer
of the western Bushveld...Reef ores were extracted from the Western
Platinum mine, yielding 6,656 kg of platinum-group elements, 1 |  | | Journal (article/letter/editorial) | | Pre-proofs
The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE
mineralization hosted... The Luanga deposit, Carajás Mineral
Province, Brazil: different styles of PGE mineralization hosted...
The Luanga deposit, Carajás Mineral Province, Brazil: different styles of
PGE mineralization hosted...70910-900,
Brazil.
² VALE S/A, Av. Getulio Vargas, 671/13º, 30112-020, Belo Horizonte, MG,
Brazil
³ Present...consist mainly of
sulfide- and chromite-free harzburgite and orthopyroxenite. These mineralized rocks |  | Barnes, Stephen J., Mole, David R., Hornsey, Richard, Schoneveld, Louise E. (2019) Nickel-Copper Sulfide Mineralization in the Ntaka Hill Ultramafic Complex, Nachingwea Region, Tanzania. Economic Geology, 114 (6) 1135-1158 doi:10.5382/econgeo.4677 | Journal (article/letter/editorial) | | (Finland) as an intermediate stage and Mirabela (Brazil) as the layered
intrusion end member.
Introduction...Maier et al., 2011), Mirabela, Brazil (Barnes et al.,
2011c), Limoeiro, Brazil (Mota-e-Silva et al., 2011)...pyroxorthopyroxenite, peridotite (dominantly harzburgite), minor enites where orthopyroxene grains show...the
predominantly nondeformed pyroxenite or harzburgite. The olivine-rich parts of the complex is the...metamorphic minerrock types comprise dunite, harzburgite (poikilitic and granu- als and the development |  | Prichard, Hazel M., Suárez, Saioa, Fisher, Peter C., Knight, Robert D., Watson, John S. (2018) Placer platinum-group minerals in the Shetland ophiolite complex derived from anomalously enriched podiform chromitites. Mineralogical Magazine, 82 (3) 491-514 doi:10.1180/minmag.2017.081.099 | Journal (article/letter/editorial) | |
The Shetland ophiolite consists of mantle harzburgite overlain by crustal dunite, wehrlite,
pyroxenite...surrounded by an envelope of dunite enclosed in harzburgite. Not all of these pods are
enriched in PGE with...50-90%) enclosed by a dunite envelope in mantle harzburgite. Cliff
is near the basal thrust (Fig. 2) and...PGE-alloys from the Bom Succeso stream in Minas Gerais, Brazil (Cabral et al.,
2007, 2009).
There are many other...and the Pd-Cu rosettes coating goethite in the Limoeiro Ni-Cu-(PGE) deposit
(Mota-e-Silva et al., 2016) |  | | Book | | 11. 12 Upper Critical Zone Chromitite Layers Mine Western Bushveld Complex H. V. Eales at R.P.M....position of leading world producer. Albania and Brazil have recently emerged as important suppliers (Table...~ 11 256 Iran = - - - - DF, 105 177 Brazil - D 1 1 3 4 15 159 Malagasy - - ~ ...missing parts, as for example in the Campo Formoso region of Brazil. This is now possibly the largest chromite...high-Al podiform deposits deep in the mantle harzburgite to Cr-rich spinels in the lower part of the ophiolite |  | | Journal (article/letter/editorial) | | Ni-Cu-PGE deposit is the only past-producing nickel mine (1958–1974) in the Canadian
Cordillera of British...remains British Columbia’s only past-producing
nickel mine (1958–1974), having produced ~4.2 Mt of ore
with...
Chinaman
Pride of
Emory
Upper
4600
1900
ad
mine ro
5481000 mN
5481000 mN
R
id
ge
606500 mE...the Giant Mascot
ultramafic suite along the upper mine road (Fig. 2). Deformation features of the Spuzzum...Settler schist
Orebodies (projected to surface)
Mine tunnels
Map symbols
road (dirt)
stream or river |  | Le Vaillant, Margaux; Barnes, Stephen J.; Mole, David R.; Fiorentini, Marco L.; Laflamme, Crystal; Denyszyn, Steven W.; Austin, James; Patterson, Ben; Godel, Belinda; Hicks, John; et al. (2020) Multidisciplinary study of a complex magmatic system: The Savannah Ni-Cu-Co Camp, Western Australia. Ore Geology Reviews, 117. doi:10.1016/j.oregeorev.2019.103292 | Journal (article/letter/editorial) | | Australia (Maier et al., 2016), Mirabela and Limoeiro in Brazil (Barnes et al.,
52
2011; Mota-e-Silva et...Intrusion until 2008 when the
122
Sally Malay Ni-Cu-Co mine was re-named Savannah. Here, we refer to the current...km long by 0.35 km wide. It is dominated by harzburgite-
148
peridotite at the base (south), transitioning...176
to the north and north-west of the Savannah mine as a 1.25 km2 body of interlayered norite,
177...40-50 degree dip toward the NW. Within the Savannah mine area (Figure
273
2B,C,D), the TCG mostly passes |  | | Journal (article/letter/editorial) | | in the evaluation of a deposit and planning of
a mine or quarry, completely separate from the exploration...The area is
the site of Greenland’s only producing mine, due to close
end 2013 (http://angelmining.com/)...characteristics of Au
mineralisation in the Pb–Zn–Ag Balya mine, NW Turkey:
a separate mineralisation system?
M...deposit research using legacy collections and
historic mine sites: a case study of tungsten (-bismuth)
mineralisation...1950s. The last tungsten mine, Castle-an-Dinas,
closed in 1957. The Hemerdon mine in south Devon
operated |  | | Journal (article/letter/editorial) | | The Platreef is mined in the Mogalakwena open pit mine which comprises the Sandsloot and
Overysel farms...upper
T1 Zone, which is hosted in layers of harzburgite, pyroxenite, troctolite and olivine norite, and...mineral assemblages in the
Platreef at the Sandsloot Mine, northern Bushveld Complex, South Africa. Mineral...sulphides from the Platreef, Mogalakwena Platinum
Mine, Bushveld Complex, South Africa. South African J...Platinum-group
minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and |  | | Book (edition) | | Salinas, Peru, H
Variscite, xx 5 mm, Iturnbiara, Brazil, H
Rhodocbrosite, polished, 50 mm, Capillitas,... China, H
Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H
Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Brazilianite, 35 mm, Linopolis, Brazil, H
Page 13: Gold, 35 mm.Eagle's est Mine, California, G
Publi!>hed...Rice, Dolores co.,
both Colorado, at the Questa mine, Taos co., New
1994.
Abernathyite
K2[(UOJ 2l(AsO_J2]•6HzO...Harding
Co .. South Dakota. and at the Fuemrole No2 mine,
Emery co .. Utah. Also at Menzenschwand Scbwarzwald |  | | Book | | x 3.5 cm. crystal - 2.0 cm x 2.0 cm. Sweet Home mine, near Alma, Park Counr:: Colondo. L:S.-\.The Collector'...Pakistan, Sri Lanka, Myanmar, Thailand, Australia, Brazil, Colombia and numerous other countries. The appearance...including an extensive large emerald deposits in Brazil (Santa Terezinha, Itabira, Nm·a Era and others)...greenish,bluish,light pink, light lilac Pegmatitic Brazil(MinasGerais);UnitedStates (Dunton,Maine);Namibia(Karibib);...(crystallineschist).Mainly Brazil(MinasGerais- ltinga,Maricota, l..:Jjivela; Bahia-Paramirimdas Criolas, |
|