云南石林彩玉的宝石矿物学特征研究-TheGemmologicalAssociation.PDF

雲南石林彩玉的寶石礦物學特徵研究 Gemmological Features of Colourful Jade (Caiyu) from Shilin, Yunnan Province, China 張平　　何雪梅 Zhang Ping　　He Xuemei 中國地質大學（北京）珠寶學院，北京100083 School of Gemology, China University of Geosciences, Beijing 100083, China Abstract: The material known as “Shilin 摘要：石林彩玉因發現於雲南省昆明市石 Colour ful Jade” (in Chinese “Shilin 林縣且色彩豐富、質地堅硬而得名。本文 Caiyu”) was discovered in Shilin County, 通過偏光顯微鏡觀察、陰極發光、X射線 Kunming, Yunnan, China. It is so named 粉晶衍射、紅外光譜、紫外－可見光光譜 because of its rich colour varieties and 測試方法對石林彩玉進行研究，在實驗數 hard texture. Its general gemmological 據的基礎之上，具體研究其寶石礦物學特 characteristics, in particular its mineral 徵，尤其是對其礦物組成進行了詳細的分 composition and microstructure were 析。實驗結果表明，石林彩玉的主要組成 tested by using a polarizing microscope, 礦物為石英、玉髓，次要礦物為赤鐵礦。 cathodoluminescence, X-ray powder 部分樣品被鐵質侵染或內部含有輝石礦 diffraction, infrared spectrum and UV- 物。 Vis spectrum. The results show that the samples are mainly composed of quartz 關鍵詞：石林彩玉；寶石礦物學特徵；礦 minerals and chalcedony, with traces of 物組成 hematite. Iron was found to be dispersed 近年來，一些高端玉石資源如翡翠及和田 throughout some of the quartz grains and 玉礦床資源日益稀缺，而石英質玉石逐漸 others contained pyroxene. 興起，呈現出流行趨勢。最近出現的新品 Keywords: Shilin colourful jade, Shilin 種－石林彩玉，就是在雲南省石林縣被 caiyu, gemmological features, mineral 發現的。目前國內對石林彩玉的研究比較 composition 匱乏，本文通過系統地研究石林彩玉的寶 石礦物學特徵，旨在提供相關參考資料， 供業內人士和珠寶玉石愛好者了解石林彩 玉。 圖1 石林彩玉成品 2017 Volume XXXVIII /en/journal.asp 90 表1 石林彩玉樣品的外觀描述 樣品編號 外觀描述 SL1-1 外皮為黃色，內部無色；顯－隱晶質結構；透