New occurrences of jadeitite, jadeite quartzite and jadeite-lawsonite quartzite in the Dominican Republic, Hispaniola: petrological and geochronological overview

Schertl, Hans‐Peter; Maresch, Walter V.; Stanek, Klaus; Hertwig, A. T.; Krebs, M.; Baese, Rauno; Sergeev, Sergey S.

doi:10.1127/0935-1221/2012/0024-2201

Cited by 72 publications

(30 citation statements)

References 48 publications

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“…6 as discussed above. In addition to these cases, jadeitites from Polar Urals (Russia), Osayama (Japan), the South Motagua Mélange (Guatemala), the Rio San Juan Complex (Dominica Republic), the Sierra del Convento Mélange (Cuba) and the Cycladic blueschist belt (Greece) have also been studied recently (Tsujimori et al, 2005;Bröcker and Keasling, 2006;Meng et al, 2011;Cárdenas-Párraga et al, 2012;Schertl et al, 2012;Flores et al, 2013). With a few exceptions, most zircons in these studies contain mineral inclusions of metasomatic origin and were suggested to be newly-formed.…”

Section: Jadeitites From Other Occurrencesmentioning

confidence: 96%

“…It generally occurs as blocks, in association with high-pres sure/low-temperature rocks, within serpentinite (cf., Tsujimori and Harlow, 2012). Its genesis has attracted much attention recently (Tsujimori et al, 2005;Bröcker and Keasling, 2006;Shi et al, 2008Shi et al, , 2009Qiu et al, 2009;Fu et al, 2010Fu et al, , 2012Yui et al, 2010Yui et al, , 2012Yui et al, , 2013Meng et al, 2011;Mori et al, 2011;Cárdenas-Párraga et al, 2012;Schertl et al, 2012;Flores et al, 2013;Fukuyama et al, 2013). Two formation mechanisms have been proposed: the wholesale metasomatic replacement and the vein precipitation (Harlow et al, 2007(Harlow et al, , 2014(Harlow et al, , 2015Yui et al, 2010;Tsujimori and Harlow, 2012).…”

Section: Introductionmentioning

confidence: 96%

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A revisit to the Yorii jadeite–quartz rock, the Kanto Mountains, central Japan: Implications for petrogenesis

Yui

Fukuyama

2015

Journal of Asian Earth Sciences

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Section: Jadeitites From Other Occurrencesmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 96%

A revisit to the Yorii jadeite–quartz rock, the Kanto Mountains, central Japan: Implications for petrogenesis

Yui

Fukuyama

2015

Journal of Asian Earth Sciences

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“…The rock type is a very important key data item in archaeological research, and jadeitite and omphacitite are not so common on Earth. Thus, the known nearby Central and South American and Caribbean localities of eclogite‐facies rocks provide potential source areas, several of which are on or close to a coastline that might have facilitated transport: the Acatlán Complex of eclogites, Puebla State, southern Mexico; the Motagua River Valley, Guatemala; Margarita Island, Venezuela, the Sierra del Convento, Cuba; and the Rio San Juan Complex, Dominican Republic . Although a portable RS analytical operation like this one cannot distinguish between these potential sites, at least it can confirm the presence of Jd‐rich clinopyroxene, and that is not a negligible achievement.…”

Section: Discussionmentioning

confidence: 99%

Portable Raman verification and quantification of jade in Olmec ceremonial axes from El Manatí, Veracruz, Mexico

Giligny¹,

Smith

Masson³

et al. 2017

J Raman Spectroscopy

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The El Manatí archaeological site in Veracruz State, Mexico, is famous for its deposits of ceremonial stone axes and beads from the Olmec culture. Some of these have been considered to be in jadeite‐jade, but this rock type in these artefacts has never before been physico‐chemically verified. A portable Raman spectrometer was employed in situ inside the Centro‐INAH Veracruz reserve for this remote analytical operation of non‐destructive direct hand‐held analysis to identify some of the mineral species present. The key points of interest were as follows: which objects can correctly be called ‘jade’ because they contain the high‐pressure minerals jadeite or omphacite and, if so, with what mol. % Jd (Jd%) in the solid‐solution jadeite–diopside–hedenbergite. The Jd% value was then quantified from the wavenumber shift of the symmetric Si–O–Si Raman vibration band. Although some artefacts did not yield any usable Raman spectra, exploitable spectra were obtained from 41 stone axes or beads. Jadeite was found in 13 artefacts and omphacite in another 11. Jd% varied from 95 to 38% such that many of these jades are actually omphacite‐jade rather than jadeite‐jade. The complicated terminology of jades is thus re‐examined. A partial correlation is shown to exist between the Jd% value and the density of the artefacts. These results provide important, hitherto unknown, mineralogical data for archaeologists studying artefacts at different horizons at different sites of Mesoamerican cultures. These results also allow these artefacts to be now labelled correctly in their Museum reserve or exhibition display. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Jadeitite is a rare high-pressure/low-temperature metamorphic rock composed almost entirely of jadeite (NaAlSi 2 O 6 ), which is commonly associated with oceanic blueschists and eclogites in serpentinite mélanges (Harlow et al, 2015;Schertl et al, 2012;Tsujimori & Harlow, 2012). Jadeitite samples directly record fluid activities in the subduction channel (Harlow et al, 2015;Shi et al, 2012;Tsujimori & Harlow, 2012) and thus offer a window into the geochemical processes of fluid-related mass transfer within oceanic subduction zones (Harlow et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Magnesium Isotope Composition of Subduction Zone Fluids as Constrained by Jadeitites From Myanmar

et al. 2018

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Subduction zone fluids are critical for transporting materials from subducted slabs to the mantle wedge. Jadeitites from Myanmar record fluid compositions and reactions in the forearc subduction channel. Here we present high‐precision Mg isotope data of the Myanmar jadeitites and associated rocks to understand the Mg isotope composition of subduction zone fluids at forearc depths. Two types of jadeitites (white and green) exhibit distinct Mg isotope compositions. The white jadeitites precipitated from Na‐Al‐Si‐rich fluids and have low δ26Mg values, varying from −1.55‰ to −0.92‰, whereas the green jadeitites have higher δ26Mg values (−0.91‰ to −0.74‰) due to metasomatic reactions between fluids and Cr spinel. The amphibole‐rich blackwall in the contact boundaries between jadeitites and serpentinites also exhibits low δ26Mg values (−1.17‰ to −0.72‰). Therefore, the jadeite‐forming fluids have not only high concentrations of Na‐Al‐Si but also low δ26Mg values. The low δ26Mg signature of the fluids is explained by the dissolution of Ca‐rich carbonate in subducted sediments or altered oceanic crust, which is supported by the negative correlation of δ26Mg with CaO/TiO2, CaO/Al2O3, and Sr in the white jadeitites. Given the common occurrence of Ca‐rich carbonates in the subduction channel, the Mg isotope composition of low‐Mg aqueous fluids would be significantly modified by dissolved carbonates. Metasomatism by such fluids along conduits has the potential to generate centimeter‐scale Mg isotope heterogeneity in the forearc mantle wedge. Therefore, Mg isotopes could be a powerful tracer for recycled carbonates not only in the deep mantle but also in the shallow regions of subduction zones.

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New occurrences of jadeitite, jadeite quartzite and jadeite-lawsonite quartzite in the Dominican Republic, Hispaniola: petrological and geochronological overview

Cited by 72 publications

References 48 publications

A revisit to the Yorii jadeite–quartz rock, the Kanto Mountains, central Japan: Implications for petrogenesis

A revisit to the Yorii jadeite–quartz rock, the Kanto Mountains, central Japan: Implications for petrogenesis

Portable Raman verification and quantification of jade in Olmec ceremonial axes from El Manatí, Veracruz, Mexico

Magnesium Isotope Composition of Subduction Zone Fluids as Constrained by Jadeitites From Myanmar

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