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Loma Peguera

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Journal Article

CHROMIAN SPINEL COMPOSITION AND THE PLATINUM-GROUP MINERALS OF THE PGE-RICH LOMA PEGUERA CHROMITITES, LOMA CARIBE PERIDOTITE, DOMINICAN REPUBLIC

Joaquín A. Proenza, Federica Zaccarini, John F. Lewis, Francisco Longo, Giorgio Garuti
Published: 01 June 2007
The Canadian Mineralogist (2007) 45 (3): 631–648.
DOI: https://doi.org/10.2113/gscanmin.45.3.631
...Joaquín A. Proenza; Federica Zaccarini; John F. Lewis; Francisco Longo; Giorgio Garuti Abstract The Loma Peguera chromitites are located in the central part of Loma Caribe peridotite in the Cordillera Central of Dominican Republic. The chromitite bodies are hosted in typical mantle peridotites...
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RUTHENIUM AND MAGNETITE INTERGROWTHS FROM THE LOMA PEGUERA CHROMITITE, DOMINICAN REPUBLIC, AND RELEVANCE TO THE DEBATE OVER THE EXISTENCE OF PLATINUM-GROUP ELEMENT OXIDES AND HYDROXIDES

Federica Zaccarini, Luca Bindi, Giorgio Garuti, Joaquin A. Proenza
Published: 17 December 2014
The Canadian Mineralogist (2014) 52 (4): 617–624.
DOI: https://doi.org/10.3749/canmin.1400030
...Federica Zaccarini; Luca Bindi; Giorgio Garuti; Joaquin A. Proenza A bstract Two small grains, about 50 × 60 × 70 μm in size, occurring in the chromitite associated with the altered harzburgite of Loma Peguera (Dominican Republic) have been investigated by electron microprobe analyses, X-ray...
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ZACCARINIITE, RhNiAs, A NEW PLATINUM-GROUP MINERAL FROM LOMA PEGUERA, DOMINICAN REPUBLIC

Anna Vymazalová, František Laufek, Milan Drábek, Chris J. Stanley, Ronald J. Baker, Raul Bermejo, Giorgio Garuti, Oscar Thalhammer, Joaquin A. Proenza, Francisco Longo
Published: 01 October 2012
The Canadian Mineralogist (2012) 50 (5): 1321–1329.
DOI: https://doi.org/10.3749/canmin.50.5.1321
...Anna Vymazalová; František Laufek; Milan Drábek; Chris J. Stanley; Ronald J. Baker; Raul Bermejo; Giorgio Garuti; Oscar Thalhammer; Joaquin A. Proenza; Francisco Longo Abstract Zaccariniite, RhNiAs, is a new platinum-group mineral discovered in the Loma Peguera ophiolitic chromitite, Dominican...
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Garutiite, (Ni,Fe,Ir), a new hexagonal polymorph of native Ni from Loma Peguera, Dominican Republic

Andrew M. McDonald, Joaquin A. Proenza, Federica Zaccarini, Nikolay S. Rudashevsky, Louis J. Cabri, Chris J. Stanley, Vladimir N. Rudashevsky, Joan C. Melgarejo, John F. Lewis, Francisco Longo, Ronald J. Bakker
Published: 01 March 2010
European Journal of Mineralogy (2010) 22 (2): 293–304.
DOI: https://doi.org/10.1127/0935-1221/2010/00222007
... in chromitite from Loma Peguera, Dominican Republic. The mineral was identified in heavy mineral concentrates obtained through the use of electric pulse disaggregation (EPD) and hydroseparation (HS) techniques. It forms as anhedral, botryoidal grains typically 10–60 μm in size (maximum of 110 μm). Grains...
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SEM-BSE image of one of the two analyzed grains from the Loma Peguera chrom...

Published: 17 December 2014
F ig . 1. SEM-BSE image of one of the two analyzed grains from the Loma Peguera chromitite.
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Reflected-light image of the second grain found in the Loma Peguera chromit...

Published: 17 December 2014
F ig . 2. Reflected-light image of the second grain found in the Loma Peguera chromitite. The gray minerals are chromite and the yellow grain is awaruite. For scale see Figure 1 .
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Chromitite pod in laterite, Loma Peguera, Dominican Republic.

Published: 01 March 2010
Fig. 1. Chromitite pod in laterite, Loma Peguera, Dominican Republic.
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CONCENTRATIONS (ppb) OF NOBLE METALS IN THE LOMA PEGUERA CHROMITITES

Published: 01 June 2007
TABLE 3. CONCENTRATIONS (ppb) OF NOBLE METALS IN THE LOMA PEGUERA CHROMITITES
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Chemical composition of chromite from the Loma Peguera chromitite compared ...

Published: 01 June 2007
F ig . 10. Chemical composition of chromite from the Loma Peguera chromitite compared with that from the stratiform, ophiolitic and Ural–Alaskan chromitites of Urals. A) Cr–Al–Fe 3+ atomic ratios. B) TiO 2 wt% versus Cr 2 O 3 wt%. Note that the Loma Peguera chromitite plots within the field
Journal Article

A review of hexaferrum based on new mineralogical data

Louis J. Cabri, Thomas Aiglsperger
Published: 01 June 2018
Mineralogical Magazine (2018) 82 (3): 531–538.
DOI: https://doi.org/10.1180/mgm.2018.86
...Louis J. Cabri; Thomas Aiglsperger ABSTRACT Hexaferrum, defined as an hcp Fe mineral containing varying amounts of Ru, Os, or Ir (Mochalov et al. 1998 ) was re-examined in the light of new analyses of similar alloys from the Loma Peguera and Loma Larga chromitites, in the central part of Loma...
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Geological sketch-map of the Loma Caribe peridotite showing the sampling lo...

Published: 01 October 2012
Fig. 1 Geological sketch-map of the Loma Caribe peridotite showing the sampling location at Loma Peguera, Dominican Republic, adapted from Proenza et al. (2007) and Haldemann et al. (1979) .
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REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF CHROMITE FROM THE...

Published: 01 June 2007
TABLE 1. REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF CHROMITE FROM THE LOMA PEGUERA CHROMITITE
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REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF ACCESSORY CHROMIA...

Published: 01 June 2007
TABLE 2. REPRESENTATIVE RESULTS OF ELECTRON-MICROPROBE ANALYSES OF ACCESSORY CHROMIAN SPINEL FROM THE LOMA PEGUERA PERIDOTITES
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SELECTED RESULTS OF ELECTRON-MICROPROBE ANALYSES OF PGM AND BASE-METAL MINE...

Published: 01 June 2007
TABLE 4. SELECTED RESULTS OF ELECTRON-MICROPROBE ANALYSES OF PGM AND BASE-METAL MINERALS FROM THE LOMA PEGUERA CHROMITITE
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SELECTED RESULTS OF ELECTRON-MICROPROBE ANALYSES OF PGM AND BASE-METAL MINE...

Published: 01 June 2007
TABLE 4. SELECTED RESULTS OF ELECTRON-MICROPROBE ANALYSES OF PGM AND BASE-METAL MINERALS FROM THE LOMA PEGUERA CHROMITITE
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BSE images showing morphology, texture and mineral assemblages of magmatic ...

Published: 01 June 2007
F ig . 5. BSE images showing morphology, texture and mineral assemblages of magmatic PGM in the Loma Peguera chromitites.
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BSE images showing morphology, texture and mineral assemblages of altered P...

Published: 01 June 2007
F ig . 6. BSE images showing morphology, texture and mineral assemblages of altered PGM in the Loma Peguera chromitites.
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Geographical location and simplified geological map of the central section ...

Published: 01 June 2007
F ig . 1. Geographical location and simplified geological map of the central section of the Loma Caribe peridotite, modified from Bowin (1966) and Escuder-Viruete et al. (2002) . B) Geological sketch-map of south-central part of the Loma Caribe peridotite showing the location of the Loma
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Back scattered electron image of: (a) primary PGM and (b) secondary PGM in ...

Published: 01 March 2010
Fig. 5. Back scattered electron image of: (a) primary PGM and (b) secondary PGM in chromite. Loma Peguera, Dominican Republic. Scale bar = 10 μm. Proenza et al . (2007) .
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Infrared spectrum of the Ni-serpentine from Campello Monti in comparison wi...

Published: 01 April 2018
Figure 8. Infrared spectrum of the Ni-serpentine from Campello Monti in comparison with the spectrum of népouite from Petea Mine (Soroako, Sulawesi Island, Indonesia) and that of pecoraite from Loma Peguera (Bonao, Dominican Republic), taken as reference ( Chukanov and Chervonnyi 2016 ).