Journal of Gemmology最新文献

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Webinars and Other Online Gemmological Education 网络研讨会和其他在线宝石学教育
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2021.38.1.3b
Carol M. Stockton
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引用次数: 0
Demantoid Garnet from Antetezambato, Northern Madagascar—Internal Characteristics and Their Use in Deciphering Geographic Origin 马达加斯加北部Antetezambato的Demantoid石榴石内部特征及其在地理来源解释中的应用
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2021.38.1.64
J. Zwaan
{"title":"Demantoid Garnet from Antetezambato, Northern Madagascar—Internal Characteristics and Their Use in Deciphering Geographic Origin","authors":"J. Zwaan","doi":"10.15506/jog.2021.38.1.64","DOIUrl":"https://doi.org/10.15506/jog.2021.38.1.64","url":null,"abstract":": Demantoid garnets from Antetezambato, northern Madagascar, contain a characteristic inclusion suite typical of a skarn occurrence. Unlike demantoid from the classic deposits in the Ural Mountains, Russia, and from other serpentinite-related occurrences, the stones from Madagascar do not contain ‘horsetail’ inclusions, but instead host groups of small, rounded diopside grains, fluorapatite, dolomite, calcite, quartz, pyrite and wollastonite, as well as rare native bismuth. Partially healed fissures contain two-phase fluid inclusions (with H 2 O and a gas bubble) of varying salinity. Negative crystals, commonly large and empty, sometimes also contain H 2 O. Pronounced growth features and parallel hollow tubes are also present. Demantoid from Namibia likewise has a skarn origin and shows some similar internal features, as well as some that are different, such as the common presence of fluorapatite and small multiphase fluid inclusions, along with the absence of large negative crystals and native bismuth. A review of previously advocated methods for geographic origin determination of demantoid based on chemical fingerprinting alone shows that this technique is applicable only to stones with a nearly pure andradite composition when differentiating Malagasy and Namibian localities. In such cases, elevated traces of Mn are indicative of a Namibian origin.","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67235004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
World Silver Survey 2022 2022年世界白银调查
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.3.214d
Carol M. Stockton
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引用次数: 2
Assure Program Developments 确保项目发展
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.4.308b
Carol M. Stockton
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引用次数: 0
Jade: A Gemologist’s Guide 翡翠:宝石学家指南
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.4.405
L. Kiefert
{"title":"Jade: A Gemologist’s Guide","authors":"L. Kiefert","doi":"10.15506/jog.2022.38.4.405","DOIUrl":"https://doi.org/10.15506/jog.2022.38.4.405","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67237817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The ‘Star of David’ Pattern and Presence of Macrosteps on Ruby and Sapphire Crystals from Aappaluttoq, Greenland 格陵兰阿帕鲁托克的红宝石和蓝宝石晶体上的“大卫之星”图案和大台阶的存在
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.4.364
I. Pignatelli, C. Morlot, G. Giuliani, V. Pardieu
{"title":"The ‘Star of David’ Pattern and Presence of Macrosteps on Ruby and Sapphire Crystals from Aappaluttoq, Greenland","authors":"I. Pignatelli, C. Morlot, G. Giuliani, V. Pardieu","doi":"10.15506/jog.2022.38.4.364","DOIUrl":"https://doi.org/10.15506/jog.2022.38.4.364","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67237952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inspectrum Spectrometer Inspectrum光谱仪
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2021.38.1.1
Carol M. Stockton
{"title":"Inspectrum Spectrometer","authors":"Carol M. Stockton","doi":"10.15506/jog.2021.38.1.1","DOIUrl":"https://doi.org/10.15506/jog.2021.38.1.1","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67233730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diamonds: Their History, Sources, Qualities and Benefits 钻石:它们的历史、来源、品质和利益
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2021.38.1.100
Rolf Tatje
{"title":"Diamonds: Their History, Sources, Qualities and Benefits","authors":"Rolf Tatje","doi":"10.15506/jog.2021.38.1.100","DOIUrl":"https://doi.org/10.15506/jog.2021.38.1.100","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"71 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67233816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lab-Grown Diamond Consumer Segments 实验室培育的钻石消费者细分市场
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.3.214a
Carol M. Stockton
{"title":"Lab-Grown Diamond Consumer Segments","authors":"Carol M. Stockton","doi":"10.15506/jog.2022.38.3.214a","DOIUrl":"https://doi.org/10.15506/jog.2022.38.3.214a","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67235182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
JNA’s Lab-Grown Diamond Special Issue JNA的实验室培育钻石特刊
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.3.214
Carol M. Stockton
{"title":"JNA’s Lab-Grown Diamond Special Issue","authors":"Carol M. Stockton","doi":"10.15506/jog.2022.38.3.214","DOIUrl":"https://doi.org/10.15506/jog.2022.38.3.214","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67235605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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