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Acari

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Journal Article

Adjacent Iron Oxide-Apatite and Iron Oxide Copper-Gold Mineralization in the Acarí District, Peru: The Magmatic to Hydrothermal Transition

Dave Shatwell
Journal: SEG Discovery
Published: 01 April 2023
SEG Discovery (2023) (133): 19–27.
DOI: https://doi.org/10.5382/SEGnews.2023-133.fea-01
...Dave Shatwell Abstract Hierro Acarí and Cobrepampa are adjacent, Lower Cretaceous iron oxide-apatite (IOA) and iron oxide copper-gold (IOCG) districts, respectively, emplaced in the Coastal Cordillera of southern Peru, separated by a regional NW-trending fault. Mineralization in both districts...
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Description of Neoliodes dominicus n. sp. (Acari, Oribatida) from Dominican Amber, Aided by Synchrotron X-ray Microtomography

Michael Heethoff, Lukas Helfen, Roy A. Norton
Published: 01 January 2009
Journal of Paleontology (2009) 83 (1): 153–159.
DOI: https://doi.org/10.1666/08-101R1.1
... the allocation of beam time. References Alberti , G. , R. A. , Norton , J. , Adis , N. A. , Fernandez , E. , Franklin , M. , Kratzmann , A. I. , Moreno , G. , Weigmann , S. , and Woas , 1997 , Porose integumental organs of oribatid mites (Acari, Oribatida). 2...
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A terrestrial alicorhagiid mite (Acari: Acariformes) from the Devonian of New York

John B. Kethley, Roy A. Norton, Patricia M. Bonamo, William A. Shear
Published: 27 December 1989
Micropaleontology (1989) 35 (4): 367–373.
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Cartoon of the development of the Hierro <span class="search-highlight">Acarí</span>, Cobrepampa, and Pampa del P...

Cartoon of the development of the Hierro Acarí, Cobrepampa, and Pampa del P...

Published: 01 April 2023
Fig. 5. Cartoon of the development of the Hierro Acarí, Cobrepampa, and Pampa del Pongo mineralization. (A) Magnetite deposition at Hierro Acarí and Pampa del Pongo. (B) Northwest faulting, unroofing of the Cobrepampa Monzonite, extrusion of the (Tunga?) andesite, deposition of hematite mantos
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FTIR spectra of pink opals (U, Uruapan; M, Mapimi; Ap, <span class="search-highlight">Acari</span> pale; Ad, Acar...

FTIR spectra of pink opals (U, Uruapan; M, Mapimi; Ap, Acari pale; Ad, Acar...

Published: 01 September 2004
Fig. 2. FTIR spectra of pink opals (U, Uruapan; M, Mapimi; Ap, Acari pale; Ad, Acari dark). Spectra are shifted for clarity. Vertical lines highlight some of the palygorskite (P) peaks. Pure palygorskite and opal-CT are presented as references. Acari pink opal contains the most palygorskite
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Regional geology of the <span class="search-highlight">Acarí</span>-Marcona district. Areas of iron oxide copper-...

Regional geology of the Acarí-Marcona district. Areas of iron oxide copper-...

Published: 01 April 2023
Fig. 2. Regional geology of the Acarí-Marcona district. Areas of iron oxide copper-gold (IOCG) mineralization are outlined in red, iron oxide-apatite (IOA) mineralization in black. Based on Chen et al. ( 2010 ) for Marcona-Mina Justa region; see Figure 3 for other sources. CB = Coastal
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Geology of the Hierro <span class="search-highlight">Acarí</span>-Cobrepampa district, from Zevallos ( 1966 ), Ca...

Geology of the Hierro Acarí-Cobrepampa district, from Zevallos ( 1966 ), Ca...

Published: 01 April 2023
Fig. 3. Geology of the Hierro Acarí-Cobrepampa district, from Zevallos ( 1966 ), Calvo et al. ( 2013 ), Instituto Geológico Minero Metalúrgico ( 2016 ), and D. Shatwell (unpub. mapping, 1969). Black stars show ages in Ma. Projection is UTM WGS 84, zone 18S.
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Longitudinal projection of the Mastuerzo 1A vein, Hierro <span class="search-highlight">Acarí</span>, after Zeval...

Longitudinal projection of the Mastuerzo 1A vein, Hierro Acarí, after Zeval...

Published: 01 April 2023
Fig. 4. Longitudinal projection of the Mastuerzo 1A vein, Hierro Acarí, after Zevallos ( 1966 ).
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Pink opals X-ray diffractograms. “P” indicates main peaks of palygorskite, ...

Pink opals X-ray diffractograms. “P” indicates main peaks of palygorskite, ...

Published: 01 September 2004
Fig. 1. Pink opals X-ray diffractograms. “P” indicates main peaks of palygorskite, and “Q” common quartz impurities. Pink opal from Uruapan contains the least palygorskite, whereas Acari pink opal contains the most. Note that the darkest coloured samples from Acari have more palygorskite than
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Distribution of planktonic foraminifera in the Jaddala section. A. = <span class="search-highlight">Acari</span>...

Distribution of planktonic foraminifera in the Jaddala section. A. = Acari...

Published: 01 October 2010
Figure 9: Distribution of planktonic foraminifera in the Jaddala section. A. = Acarinina , G. = Globigerina , Ggk. = Globigerinatheka , Gr. = Globorotalia , Gs. = Globigerinoides , P. = Pseudohastigerina , M. = Morazovella , and Tu. = Turborotalia .
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SEM pictures of pink opal from Uruapan (U), Mapimi (M), <span class="search-highlight">Acari</span> (A), and of q...

SEM pictures of pink opal from Uruapan (U), Mapimi (M), Acari (A), and of q...

Published: 01 September 2004
Fig. 5. SEM pictures of pink opal from Uruapan (U), Mapimi (M), Acari (A), and of quincyite (Q). Mexican and Peruvian pink opals have the same microstructure: fibres of 20 to 30 nm in diameter, which form bundles. These bundles associate themselves in different orientations. For quincyite
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Figure 9 — 1, Larva of Coleoptera, MCNA 8658, body length 2 mm. 2, Aves...

Figure 9 — 1, Larva of Coleoptera, MCNA 8658, body length 2 mm. 2, Aves...

Published: 01 January 2000
Figure 9 — 1, Larva of Coleoptera, MCNA 8658, body length 2 mm. 2, Aves, contour feather, MCNA 8632, length 16 mm. 3, Acari, Actinedida, MCNA 8633.1, body length 0.25 mm. 4, Acari, Actinedida in lateral view, MCNA 8634.1, body length 0.4 mm. 5, Arachnida, Araneae in ventral view, MCNA
Journal Article

Visible-Near Infrared–Short-Wave Infrared Spectroscopy and Mineral Mapping of Hydrothermal Alteration Zones at the Brejuí W-Mo Skarn Deposit, Seridó Mobile Belt, Borborema Province, Brazil

Manoel Augusto Corrêa da Costa, João Luís Carneiro Naleto, Mônica Mazzini Perrotta, Lena Virgínia Soares Monteiro, Carlos Roberto de Souza Filho
Journal: Economic Geology
Published: 01 August 2024
Economic Geology (2024) 119 (5): 1171–1198.
DOI: https://doi.org/10.5382/econgeo.5085
... the largest Brazilian W ore reserve. The orebodies are hosted in the metasedimentary Jucurutu Formation of the Seridó Group (650–610 Ma), close to the margin of the Neoproterozoic Acari pluton (Brasiliano orogeny). Skarns include prograde and retrograde mineral assemblages. Infrared spectral analysis shows...
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Percentage of palygorskite/opal as a function of the d -spacing of trydimi...

Percentage of palygorskite/opal as a function of the d -spacing of trydimi...

Published: 01 September 2004
Fig. 7. Percentage of palygorskite/opal as a function of the d -spacing of trydimite-like stacking in opal. U represents pink opal from Uruapan, M from Mapimi, A from Acari.
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( a ) F distribution between biotite and muscovite from the Seridó mica sch...

( a ) F distribution between biotite and muscovite from the Seridó mica sch...

Published: 03 July 2023
Figure 6. ( a ) F distribution between biotite and muscovite from the Seridó mica schist, Jucurutu paragneiss, sheared Acari granite, and Serra Verde pegmatitic granite. ( b ) The IV(F) values distribution between biotite and muscovite. The F intercept value for IV(F) is taken from Munoz (1984) .
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Local geologic map and cross section of the Brejuí W-Mo deposit. The map sh...

Local geologic map and cross section of the Brejuí W-Mo deposit. The map sh...

Published: 01 August 2024
and Dantas ( 2015 ). Abbreviations: AP = Acari pluton, Bt = biotite, Crd = cordierite, Grt = garnet, Hbl = hornblende, qz = quartz.
Journal Article

Relationship between nanostructure and optical absorption in fibrous pink opals from Mexico and Peru

Emmanuel FRITSCH, Eloïse GAILLOU, Mikhail OSTROUMOV, Benjamin RONDEAU, Bertrand DEVOUARD, Alain BARREAU
Published: 01 September 2004
European Journal of Mineralogy (2004) 16 (5): 743–752.
DOI: https://doi.org/10.1127/0935-1221/2004/0016-0743
...Fig. 2. FTIR spectra of pink opals (U, Uruapan; M, Mapimi; Ap, Acari pale; Ad, Acari dark). Spectra are shifted for clarity. Vertical lines highlight some of the palygorskite (P) peaks. Pure palygorskite and opal-CT are presented as references. Acari pink opal contains the most palygorskite...
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New fossil stilt-legged mites of Neophyllobius Berlese, 1886 (Acariformes, Camerobiidae) from Eocene Baltic amber

Mateusz Zmudzinski
Published: 01 July 2020
Journal of Paleontology (2020) 94 (4): 696–715.
DOI: https://doi.org/10.1017/jpa.2020.13
... the ‘Diamond Grant’ program (no. DI2017 002547). References Akyol , M. , 2013 , Two new species of the genus Neophyllobius Berlese (Acari: Camerobiidae) from Turkey : International Journal of Acarology , v. 39 , p. 542 – 546 . Alberti , G. , and Coons , L.B. , 1999 , Acari...
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A NEW FOSSIL RESIN WITH BIOLOGICAL INCLUSIONS IN LOWER CRETACEOUS DEPOSITS FROM ÁLAVA (NORTHERN SPAIN, BASQUE-CANTABRIAN BASIN)

JESUS ALONSO, ANTONIO ARILLO, EDUARDO BARRÓN, J. CARMELO CORRAL, JOAN GRIMALT, JORDI F. LÓPEZ, RAFAEL LÓPEZ, XAVIER MARTÍNEZ-DELCLÒS, VICENTE ORTUÑO, ENRIQUE PEÑALVER, PAULO R. TRINCÃO
Published: 01 January 2000
Journal of Paleontology (2000) 74 (1): 158–178.
DOI: https://doi.org/10.1666/0022-3360(2000)074<0158:ANFRWB>2.0.CO;2
...Figure 9 — 1, Larva of Coleoptera, MCNA 8658, body length 2 mm. 2, Aves, contour feather, MCNA 8632, length 16 mm. 3, Acari, Actinedida, MCNA 8633.1, body length 0.25 mm. 4, Acari, Actinedida in lateral view, MCNA 8634.1, body length 0.4 mm. 5, Arachnida, Araneae in ventral view, MCNA...
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Pb isotope bearing on the metallogenesis of sulfide ore deposits in central and southern Peru

Samuel B. Mukasa, Cesar E. Vidal C., Jorge Injoque-Espinoza
Journal: Economic Geology
Published: 01 November 1990
Economic Geology (1990) 85 (7): 1438–1446.
DOI: https://doi.org/10.2113/gsecongeo.85.7.1438
... with a Pb isochron age of 3.2 Ga in the 207 Pb/ 204 Pb versus 206 Pb/ 204 Pb covariation diagram. Mineral deposits of the copper veins in granitoids association at the Cata-Canete and Cobre-Acari districts plot along the same array. The isochron age of 3.2 Ga is too old to have chronological significance...
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