Study of the minerogenetic mechanism and origin of Qinghai nephrite from Golmud, Qinghai, Northwest China

Yu, Haiyan; Wang, Rucheng; Guo, Jianchun; Li, JiaGui; Yang, XiaoWen

doi:10.1007/s11430-015-0231-8

Cited by 20 publications

(33 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, some findings could provide a certain explanation for the phenomena that we concerned. Several reasons contribute to the differences including the size of lath-like crystallites, azimuthal disorientation, irregular grain boundaries between laths within bundles and bundles of crystallites randomly oriented with irregular boundaries where they meet [34,35]. From a more geological genesis point of view, the submicroscopic characteristics in nephrite may have largely resulted from intraand inter-grain slips, differential strain energy, oriented nucleation and growth in response to effective stresses [34].…”

Section: Resultsmentioning

confidence: 99%

Sub-microstructures of Nephrite from Five Sources Based on Multispectral Imaging and Effect Enhancement

Chen

Wei

et al. 2020

AJARR

View full text Add to dashboard Cite

Some collectors and connoisseurs have found that the nephrite from different sources possess different sub-microstructures inside the body, which could become a quite convenient and effective basis for determining provenance. The sub-microstructure of nephrite can be observed by the naked eye under irradiated by strong light. However, the images of original submicrostructure of nephrite were recorded by use of multispectral imaging in our previous work, but the visual effect is not satisfied. Here, the main features of different sub-microstructures will present more distinct by appropriately subtracting the shining strength and then the average filtering is adopted to promote the resolution of sub-microstructure imaging as well as to reduce some image noises. The sub-microstructure images of nephrite from five most common sources have typical inherent characteristics respectively, which are qualified to set up a demonstration for identifying provenances. Furthermore, the shape, size, distribution and name for these different sub-microstructures have been summarized and they will become the basis for future research on the provenance of nephrite including the ancient jade.

show abstract

Section: Resultsmentioning

confidence: 99%

Sub-microstructures of Nephrite from Five Sources Based on Multispectral Imaging and Effect Enhancement

Chen

Wei

et al. 2020

AJARR

View full text Add to dashboard Cite

show abstract

“…From the mineralogical characteristics of nephrites of different genetic origins around the world (summarized in Table 7), major differences are present between the dolomite-related (D-type) and serpentinite-related (S-type) nephrites: the main mineral of D-type nephrites is tremolite (>95 vol.%), although diopside exists in almost all D-type nephrites and is considered to be related to the nephrite formation [18,19,22]. Minor minerals mainly include actinolite, carbonate, epidote, clinozolisite, apatite, allanite, quartz, etc.…”

Section: Dolomite-related Originmentioning

confidence: 99%

“…Nephrite deposits are widespread around the world, but gem-quality ones are uncommon [15]. Major nephrite deposits are located in China [16][17][18][19][20][21][22][23][24], Russia [25,26], Canada [27], Australia [1], New Zealand [28][29][30], USA [1], and South Korea [31]. Nephrite can be divided into serpentinite-related (S-type) and dolomite-related (D-type) types according to its origin [1].…”

Section: Introductionmentioning

confidence: 99%

“…Famous and representative S-type nephrite deposits have been found in British Columbia in Canada [27], East Sayan in Russia [25,26], New Zealand [28][29][30], Jordanów and the adjacent areas in SW Poland [32,33], Taiwan and Manasi in China [34,35]. D-type nephrite forms along the contact between dolomitic marble and igneous intrusions [1], and is reported in many localities in China [17][18][19][20][21][22], together with Chuncheon (Korea) [31], Cowell (South Australia) [1], Vitim (Siberia, Russia) [25,26], Złoty Stok (SW Poland) [33,36], and some new discoveries were made in Europe [1]. Previous studies have suggested that S-type and D-type nephrites are of metasomatic and metamorphic origin, respectively [27].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mineralogy and Geochemistry of Nephrite Jade from Yinggelike Deposit, Altyn Tagh (Xinjiang, NW China)

Jiang

Shi

et al. 2020

Minerals

View full text Add to dashboard Cite

The historic Yinggelike nephrite jade deposit in the Altyn Tagh Mountains (Xinjiang, NW China) is renowned for its gem-quality nephrite with its characteristic light-yellow to greenish-yellow hue. Despite the extraordinary gemological quality and commercial significance of the Yinggelike nephrite, little work has been done on this nephrite deposit, due to its geographic remoteness and inaccessibility. This contribution presents the first systematic mineralogical and geochemical studies on the Yinggelike nephrite deposit. Electron probe microanalysis, X-ray fluorescence (XRF) spectrometry, inductively coupled plasma mass spectrometry (ICP-MS) and isotope ratio mass spectrometry were used to measure the mineralogy, bulk-rock chemistry and stable (O and H) isotopes characteristics of samples from Yinggelike. Field investigation shows that the Yinggelike nephrite orebody occurs in the dolomitic marble near the intruding granitoids. Petrographic studies and EMPA data indicate that the nephrite is mainly composed of fine-grained tremolite, with accessory pargasite, diopside, epidote, allanite, prehnite, andesine, titanite, zircon, and calcite. Geochemical studies show that all nephrite samples have low bulk-rock Fe/(Fe + Mg) values (0.02–0.05), as well as low Cr (0.81–34.68 ppm), Co (1.10–2.91 ppm), and Ni (0.52–20.15 ppm) contents. Chondrite-normalized REE patterns of most samples exhibit strong to moderate negative Eu anomalies (0.04–0.67), moderate LREE enrichments, nearly flat HREE patterns, and low ΣREE contents (2.16–11.25 ppm). The nephrite samples have δ18O and δD values of 5.3 to 7.4‰ and –74.9 to –86.7‰, respectively. The mineralogy, bulk-rock chemistry, and O–H isotope characteristics are consistent with the dolomite-related nephrite classification. Based on mineral paragenetic relationships, three possible mineral crystallization stages are recognized: (1) diopside formed by prograde metasomatism; (2) nephrite jade formed by retrograde metasomatism and replacement of Stage I anhydrous minerals; (3) hydrothermal alteration after the nephrite formation. Features of transition metal contents indicate that the color of the Yinggelike nephrite is likely to be controlled by the Fe2+, Fe3+, and Mn. Yellowish color is related to Mn and especially Fe3+, while greenish color is related to Fe2+. Our new mineralogical and geochemical results on the Yinggelike nephrite provide better constraints on the formation of other nephrite deposits in the Altyn Tagh Mountains, and can facilitate future nephrite prospecting and research in the region.

show abstract

“…146 Li R. et al (2004). 147 Yu et al (2016). distinguish between very localised products, but the numerical possibilities here are enormous among 30 known orebodies.…”

Section: Qinghai D-nephrites and S-nephritesmentioning

confidence: 99%

Understanding Chinese jade in a world context

Barnes¹

2018

JBA

View full text Add to dashboard Cite

For millennia, jade has been valued in many cultures in Chinese archaeology. The favoured types and sources of jade have changed over time, as has our knowledge of the stones themselves. One of the greatest problems in dealing with archaeological jades is the correct identification of the stones in order to trace their source and thereby understand the social relations underlying their patterns of procurement, pro duction, and consumption. This paper examines the problems of identification and sourcing of Chinese archaeological jades from a worldwide point of view, dissecting terminological problems arising from mineralogy and rock geochemistry, and expli citly identifying the geological constraints on the formation of nephrite and jadeite. In particular, the role of plate tectonics in determining the occurrence of jade provides an overarching perspective on where in China jade sources might occur and how nephrite might be mined and distributed, together with its associated rocks and minerals. The latter associations are equally important to this jade sourcing endeavour.

show abstract

Study of the minerogenetic mechanism and origin of Qinghai nephrite from Golmud, Qinghai, Northwest China

Cited by 20 publications

References 37 publications

Sub-microstructures of Nephrite from Five Sources Based on Multispectral Imaging and Effect Enhancement

Sub-microstructures of Nephrite from Five Sources Based on Multispectral Imaging and Effect Enhancement

Mineralogy and Geochemistry of Nephrite Jade from Yinggelike Deposit, Altyn Tagh (Xinjiang, NW China)

Understanding Chinese jade in a world context

Contact Info

Product

Resources

About