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Journal Article
Journal: GSA Bulletin
Published: 25 May 2023
GSA Bulletin (2024) 136 (1-2): 661–672.
...Guanghai Shi; Ru Jia; M. Santosh; Huan Liang; Huaiyu He Abstract Nephrite jade is of wide interest, not only for its value as a highly valued precious stone, but also for its significance in tracing geological and petrological processes. Here, we report the first discovery of a nephrite deposit...
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Journal Article
Published: 05 April 2021
Geological Magazine (2021) 158 (8): 1487–1503.
... that ascended in the subduction zone and were exhumed at Hpakant and Nat Hmaw, bordering the Jade Mines Uplift. Subduction of the Indian Ocean since Albian time generated the Popa–Loimye arc, while extensional faulting led to uplift of the Indo-Burman Ranges and to the formation of the Western Tin Belt granites...
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Published: 01 January 2017
DOI: 10.1144/M48.12
EISBN: 9781862399730
... the belt. We summarize the critical geology of the important Jade Mines Belt, a zone of high-pressure ophiolitic rocks along the northern end of the Sagaing Fault, and other metamorphic belts including the Katha-Gangaw and the Tagaung-Myitkyina belts. We discuss two major points of interest: (1) how do...
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Published: 01 January 2017
DOI: 10.1144/M48.13
EISBN: 9781862399730
... The world’s largest jade deposit, containing the highest-quality jade, is exposed in the Pharkant-Tawmaw (also spelled Hparkant or Hpakan and Tawhmaw) Jade Mines Belt, northern Myanmar. This belt is located between latitudes 25° and 26° N and longitudes 96° 12′ and 96° 25′ E in the Myitkyina...
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Book Chapter

Author(s)
Kyaw Thu, Khin Zaw
Published: 01 January 2017
DOI: 10.1144/M48.23
EISBN: 9781862399730
... ruby deposit in Shan State and imperial coloured jadeite jade from Kachin State ( Fig. 23.1 ). For the purposes of description the gemstone deposits in Myanmar are classified into: (1) primary hard-rock deposits in which the gemstones are hosted in the rocks in which they were crystallized...
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Journal Article
Published: 01 October 2014
European Journal of Mineralogy (2014) 26 (5): 635–642.
... relevance, however, is important. A new petrographic classification of these H P metamorphic lithotypes is presented here, which is consistent with the recommendations of the SCMR. Two simple diagrams are suggested, which are useful to classify “ jades ”, mainly consisting of Na-pyroxenes, and rocks mainly...
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Journal Article
Published: 01 July 2014
American Mineralogist (2014) 99 (7): 1277–1283.
... As in such jadeitite bodies (“jade”), this sample is essentially monomineralic sodic clinopyroxene (though not as jadeite-rich as classical jades, which typically have >90 mol% jadeite component in the pyroxene— Harlow and Sorensen 2005 ). Enrichment of clinopyroxene in the kosmochlor component adjacent...
FIGURES
Journal Article
Published: 01 March 2014
European Journal of Mineralogy (2014) 26 (2): 257–265.
... associated hydrous minerals such as natrolite and harmotome occur as late-stage phases ( Shi et al. , 2012 ). The jadeitite crops out across the western part of the Sagaing Fault Zone within the central Myanmar central basin, in the Phar Kant jade mining area. The deposit of Tawmaw is about 8 kilometres...
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Series: Short Courses
Published: 01 January 2014
DOI: 10.3749/9780921294696.ch10
EISBN: 978-0-921294-69-6
...INTRODUCTION Jade is a term used to describe extremely tough, essentially monomineralic tool stones that, via their beauty and cultural connotations, were raised in value to become ornamental stone, talisman and gem material. From the gemological perspective, there are two rock types...
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Journal Article
Published: 01 March 2012
European Journal of Mineralogy (2012) 24 (2): 391–399.
... – jadeite jade. It is very unusual with respect to both pyroxene composition and minor mineral constituents. Pyroxene compositions lie essentially along the jadeite–aegirine join: Jd 94 Ae 6 to Jd 63 Ae 36 , and without any coexisting omphacite. This contrasts with Jd-Di or Jd-Aug compositional trends...
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Journal Article
Published: 01 April 2006
The Canadian Mineralogist (2006) 44 (2): 305–321.
...George E. Harlow; A. Reg Murphy; David J. Hozjan; Christy N. de Mille; Alfred A. Levinson Abstract L’excavation de matériaux ornementaux et gemmes de sites d’anciens ateliers sur l’île d’Antigua, dans les Antilles, a mené à des découvertes d’éolithes (genre de hache) en jade, ou des fragments...
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Journal Article
Published: 01 August 2003
American Mineralogist (2003) 88 (8-9): 1336–1344.
...Cuthbert J. Wilkins; W. Craighead Tennant; Bryce E. Williamson; Catherine A. McCammon Abstract Infrared, optical absorption spectroscopy, and Mössbauer spectroscopy were used to investigate the color of jade from New Zealand. Spectroscopic results were supplemented by chemical analyses...
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Journal Article
Published: 01 July 2003
European Journal of Mineralogy (2003) 15 (4): 617–628.
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Journal Article
Published: 01 August 2002
Mineralogical Magazine (2002) 66 (4): 537–545.
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Journal Article
Journal: Economic Geology
Published: 01 May 2002
Economic Geology (2002) 97 (3): 593–601.
...Tzen-Fu Yui; Sung-Tack Kwon Abstract The Chuncheon nephrite deposit in Korea is among the largest nephrite jade deposits worldwide. The deposit is hosted in Precambrian dolomitic marble and amphibole schist that were intruded by the posttectonic (Late Triassic) Chuncheon granite. Carbonates...
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Journal Article
Published: 01 February 1995
European Journal of Mineralogy (1995) 7 (1): 29–41.
Journal Article
Published: 01 December 1984
American Mineralogist (1984) 69 (11-12): 1180–1183.
...Chiu Mei Ou Yang Abstract Ureyite, a chromium sodium pyroxene of the jadeite group, has been detected in four samples of opaque bright green to dark green Burmese jade. It is a fine-grained fibrous aggregate, intergrown with amphibole, chromite and other minerals. The specific gravity is 3.51–3.52...
Journal Article
Published: 01 November 1977
The Canadian Mineralogist (1977) 15 (4): 512–517.
Journal Article
Published: 01 August 1974
American Mineralogist (1974) 59 (7-8): 868–870.
Journal Article
Published: 01 August 1973
American Mineralogist (1973) 58 (7-8): 727–732.
...Richard C. Bradt; Robert E. Newnham; J. V. Biggers Abstract The mechanical properties related to the toughness of jade are measured for both jadeite and nephrite. Fracture surface energies are an order of magnitude greater than most commercial ceramics about 120,000 ergs/cm 2 for jadeite...