本文選題：綠松石 + 仿制品��； 參考：《光譜學(xué)與光譜分析》2016年09期

【摘要】：近年來,一種綠松石的伴生石礦物作為綠松石仿制品在市場上出現(xiàn),被稱為"紫羅蘭"、"白水牛"等,日益受到消費者的歡迎。通過常規(guī)寶石學(xué)基本測試及X射線熒光光譜儀、傅里葉變換紅外光譜儀、X射線粉晶衍射儀、掃描電鏡、紫外-可見光分光光度計等測試技術(shù),對市場上這種稱做綠松石伴生石的玉石進(jìn)行了化學(xué)成分、礦物組成、微觀結(jié)構(gòu)和光譜特征的綜合測試分析,并對其呈色機制進(jìn)行了探討。X射線熒光光譜顯示樣品的化學(xué)成分較復(fù)雜,不同顏色的樣品所含元素基本一致,主要有Ca,Al,P,Cu,Si,K,Fe和Ba等元素;根據(jù)樣品紅外光譜的峰位及強度可以推斷樣品所含的陰離子團主要是PO_4~(3-);由樣品的X射線粉晶衍射可推斷該玉石主要礦物為纖磷鈣鋁石、磷鈣鋁石;掃描電鏡顯示樣品致密,由無數(shù)鱗片狀、葉片狀及不規(guī)則粒狀集合體組成;通過對可見光吸收光譜的分析,推測樣品是由Fe~(3+)離子中的電子躍遷致色,Fe~(3+)含量不同導(dǎo)致樣品顏色不同。
[Abstract]:In recent years, a turquoise associated stone mineral as a turquoise imitation in the market, known as "Violet", "White Buffalo" and so on, is increasingly popular with consumers. The basic test of gemology, X-ray fluorescence spectrometer, Fourier transform infrared spectrometer, X-ray powder diffractometer, scanning electron microscope, UV-Vis spectrophotometer, etc. The chemical composition, mineral composition, microstructure and spectral characteristics of this kind of jade called turquoise associated stone in the market have been comprehensively tested and analyzed. The mechanism of color formation was discussed. X-ray fluorescence spectra showed that the chemical composition of the samples was more complex, and the elements contained in the samples of different colors were basically the same. According to the peak position and intensity of the infrared spectrum of the sample, it can be inferred that the anion group contained in the sample is mainly PO _ 4 / P _ 3-C; the X-ray powder diffraction of the sample can infer that the main mineral of the jade is fibronecalcium, phosphor calcium aluminate; the sample is densified by scanning electron microscope. The samples are composed of numerous scale-like, leaf-shaped and irregular granular aggregates. By the analysis of visible light absorption spectra, it is inferred that the samples are different in color due to the different contents of electron transition chromophores in Fe~(3 ions.
【作者單位】： 中國地質(zhì)大學(xué)(武漢)珠寶學(xué)院;河南省產(chǎn)品質(zhì)量監(jiān)督檢驗院;
【基金】：湖北省高等學(xué)校人文社會科學(xué)重點研究基地-珠寶首飾傳承與創(chuàng)新發(fā)展研究中心基金項目(CJHIXM201405)資助
【分類號】：O657;TS933
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本文編號：1891020