Geochemistry and petrology of nephrite from Alamas, Xinjiang, NW China

Yan, Lei; Deng, Jun; Shi, Guanghai; Yui, Tzen‐Fu; Zhang, Guibin; Abuduwayiti, Maituohuti; Yang, Liqiang; Sun, Xiang

doi:10.1016/j.jseaes.2011.05.012

Cited by 61 publications

(68 citation statements)

References 36 publications

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“…7) due to the sim i lar Si apfu. More over, the Mg/(Mg + Fe 2+ ) ra tio in Z³oty Stok is in ter me di ate be tween Alamas actinolite neph rite (af ter metasomatized serpen tin ite) and tremolite neph rite (af ter do lo mite) pre sented by Liu et al (2011b). Both stud ied am phi boles also clearly dif fer from the so-called white neph rite (do lo mite-re lated de pos its) from China and Ko rea (Hung et al, 2007;Liu et al, 2011b).…”

Section: Discussionmentioning

confidence: 99%

“…In Jordanów, veins com - Alamas neph rite (Xinjiang, China) af ter Liu et al (2011b); Fengtian neph rite (Tai wan) and white nephrites from China and Ko rea af ter Hung et al (2007) posed of prehnite are char ac ter is tic. In Z³oty Stok, the most char ac ter is tic is löllingite, dis tin guish able by the na ked eye, and di op side megacrysts ag gre gates.…”

Section: Discussionmentioning

confidence: 99%

“…Clinopyroxenes from both oc cur rences be longs to di op side, typ i cal to ma jor ity of de pos its, e.g., Hetian (Xinjiang, NW China; Liu et al, 2011a) and Alamas, Xinjiang (Liu et al, 2011b). However, some of Jordanów sam ples shown in Fig ure 8 are slightly en riched in Mg 2 Si 2 O 6 (up to 48 vs. 46% in Z³oty Stok) and Fe 2 Si 2 O 6 (up to 9 vs. 5% in Z³oty Stok).…”

Section: Discussionmentioning

confidence: 99%

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Petrographic and microprobe study of nephrites from Lower Silesia (SW Poland)

Gil

2013

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Lower Silesia hosts im por tant Eu ro pean neph rite de pos its of Jordanów and less-known of Z³oty Stok. Neph rite ar ti facts were dis cov ered in ar chae o log i cal sites dated back to the Neo lithic pe riod, across Eur asia. Es pe cially ar ti facts found in Po land, Italy and Bul garia may orig i nate from Pol ish nephrites. Now a days, only one ar ti fact is pre cisely linked to Jordanów. Petrographic study of nephrites and chem i cal anal y ses of con stit u ents by means of EMPA al low ac cu rate iden ti fi ca tion of the nephrites. The char ac ter is tic phases of Jordanów tremolite neph rite are ro tated and cataclased di op side porphyroblasts with pres sure shad ows, chlorite lay ers and nests with in ter lock ing non-pseudomorphic tex ture and prehnite veins. The pres ence of hydrogrossular, grossular, ti tan ite, ap a tite with monazite in clu sions, and zir con with pleochroic haloe is typ i cal. Chlorites are usu ally rep re sented by penninite, and mi nor clinochlore and diabantite. The char ac ter is tic fea tures of Z³oty Stok actinolite neph rite are löllingite and di op side crys tals usu ally vis i ble by the na ked eye, with the pres ence of quartz and carbon ates. Löllingite is chem i cally inhomogeneous and gold bear ing. Most of the min er al og i cal-pet ro log i cal fea tures can be ob tained us ing non-de struc tive meth ods.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Petrographic and microprobe study of nephrites from Lower Silesia (SW Poland)

Gil

2013

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“…How ever, these con cen tra tions can over lap (as shown in Ta ble 1), so con clu sions about ser pen tin ite-re lated or do lo mite-re lated or i gin should be based on mul ti ple ob ser vations. For ex am ple, rock-form ing amhiboles of ser pen tin ite-related nephrites usu ally have higher Cr 2 O 3 (0.02-0.43 wt.%; see Ta ble 1; Grapes and Yun, 2010;Liu et al, 2011a) than do lomite-re lated nephrites (0.00-0.09 wt.%; Liu et al, 2011a;Ling et al, 2013), al though sev eral stud ies (Liu et al, 2010(Liu et al, , 2011b de scribed do lo mite-re lated neph rite am phi boles with el e vated Cr 2 O 3 (0.03-1.18 wt.%). Am phi boles NiO and di op side Cr 2 O 3 are also char ac ter is tic (both higher in ser pen tin ite-re lated nephrite; Ta ble 1), but un for tu nately, NiO is usu ally not in cluded in stan dard neph rite am phi boles elec tron microprobe anal y ses.…”

Section: Introductionmentioning

confidence: 99%

“…Am phi boles NiO and di op side Cr 2 O 3 are also char ac ter is tic (both higher in ser pen tin ite-re lated nephrite; Ta ble 1), but un for tu nately, NiO is usu ally not in cluded in stan dard neph rite am phi boles elec tron microprobe anal y ses. Ser pen tin ite-re lated nephrites tend to have bulk-rock Cr concen tra tions be tween 900 and 2812 ppm, Ni be tween 959 and 1898 ppm, and Co be tween 42 and 207 ppm, whereas do lomite-re lated va ri et ies have lower Cr con cen tra tions, be tween 2 and 179 ppm, Ni be tween 0.05 and 471 ppm, and Co be tween 0.5 and 10 ppm (Ta ble 1; Grapes and Yun, 2010;Liu et al, 2011b;Kostov et al, 2012;Siqin et al, 2012). Siqin et al (2012) shows that ser pen tin ite-re lated nephrites have bulk-rock Fe/(Fe + Mg) >0.060, whereas most do lo mite-re lated nephrites are <0.060, al though there is some over lap and some do lo mite-related nephrites also have a Fe/(Fe + Mg) ra tio >0.060.…”

Section: Introductionmentioning

confidence: 99%

Origin of serpentinite-related nephrite from Jordanów and adjacent areas (SW Poland) and its comparison with selected nephrite occurrences.

Gil

Barnes

Boschi

et al. 2015

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Micro‐PIXE Geochemical Fingerprinting of Nephrite Neolithic Artifacts from Southwest Bulgaria

et al. 2012

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Neolithic artifacts made of nephrite, □Ca2(Fe,Mg)5Si8O22(OH)2, are found at prehistoric settlements in Bulgaria. This study investigates these objects based on particle induced X‐ray emission using a scanning nuclear microprobe (micro‐PIXE technique). Seven nephrite artifacts from the Neolithic sites of Kovachevo, Bulgarchevo and Galabnik in southwest Bulgaria were analyzed to quantify their composition and to establish if a correlation exists between the distribution of major and trace elements, color, impurities, and texture. The nephrite artifacts are tremolite in composition, with a proposed ultrabasic origin. Based on the geochemical data obtained by micro‐PIXE, we divide the artifacts into Group 1 objects from the Kovachevo site and Group 2 objects from the Galabnik and Bulgarchevo sites. The analytical data and microprobe analyses are compared with geochemical data of nephrite from across the globe. The results are in a good agreement with previous electron microprobe and electron paramagnetic resonance (EPR) spectroscopy data. Our study provides a better understanding of the mineralogy and geochemistry of nephrite artifacts and helps to address questions regarding origin and the distribution of such materials in Bulgaria and other Balkan countries.

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Geochemistry and petrology of nephrite from Alamas, Xinjiang, NW China

Cited by 61 publications

References 36 publications

Petrographic and microprobe study of nephrites from Lower Silesia (SW Poland)

Petrographic and microprobe study of nephrites from Lower Silesia (SW Poland)

Origin of serpentinite-related nephrite from Jordanów and adjacent areas (SW Poland) and its comparison with selected nephrite occurrences.

Micro‐PIXE Geochemical Fingerprinting of Nephrite Neolithic Artifacts from Southwest Bulgaria

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