本文選題：同步輻射技術(shù)　切入點(diǎn)：脈石英　出處：《巖礦測試》2016年05期 　論文類型：期刊論文

【摘要】：質(zhì)地細(xì)膩、顏色多彩的隱晶質(zhì)-微粒脈石英在我國珠寶行業(yè)稱為石英質(zhì)玉石,顏色是石英質(zhì)玉石價(jià)值判斷的主要因素之一,揭示其致色礦物及致色機(jī)理對于研究石英質(zhì)玉石的顏色評價(jià)指標(biāo)和礦床成因具有重要意義,但前人并未直接獲得致色礦物的準(zhǔn)確信息。本文運(yùn)用上海光源(SSRF)BL15U1線站的同步輻射硬X射線,使用μ-XRF和μ-XRD技術(shù)對黃色和紅色隱晶質(zhì)-微粒脈石英中的致色礦物進(jìn)行了研究。結(jié)果表明,黃色石英質(zhì)玉石由賦存于石英顆粒間或微裂紋中的針鐵礦(特征衍射峰0.49574、0.41594、0.26887、0.25705、0.25189、0.24510、0.21806、0.17133 nm)或其集合體致色,紅色石英質(zhì)玉石由賦存于石英顆粒間或微裂紋中的赤鐵礦(特征衍射峰0.36774、0.27091、0.25200 nm)或其集合體致色,黃色-紅色石英質(zhì)玉的顏色由針鐵礦和赤鐵礦共同致色,赤鐵礦的顯色能力要高于針鐵礦。本文獲得了石英質(zhì)玉石中致色礦物的直接數(shù)據(jù),為玉石結(jié)晶溫度與致色機(jī)理的探討、石英質(zhì)玉石的品質(zhì)評價(jià)提供了依據(jù)。
[Abstract]:The fine texture and colorful cryptic quartz with fine color are called quartz jade in the jewelry industry of our country. Color is one of the main factors to judge the value of quartz jade. It is of great significance to reveal its chromogenic minerals and mechanism for the study of the color evaluation index of quartz jade and the genesis of the deposit. In this paper, the synchrotron radiation hard X-ray of Shanghai Light Source SSRF / BL15U1 station is used. Using 渭 -XRF and 渭 -XRD techniques, the chromogenic minerals in yellow and red cryptmorillite-particle vein quartz have been studied. The yellow quartz jade is colored by goethite (characteristic diffraction peak 0.4957401594U 0.26887U 0.25705U 0.24510100.218060.17133nm), which occurs between quartz particles or in micro-cracks. Red quartz jade is caused by hematite (characteristic diffraction peak 0.36774 0.27091n / 0.25200 nm) or its aggregates, and the yellowish-red quartz jade is co-colored by goethite and hematite. The chromaticity of hematite is higher than that of goethite. In this paper, the direct data of chromophore in quartz jade are obtained, which provides a basis for the discussion of crystallization temperature and chromogenic mechanism of quartz jade and the quality evaluation of quartz jade.
【作者單位】： 國土資源部珠寶玉石首飾管理中心;
【基金】：國土資源部公益性行業(yè)科研專項(xiàng)經(jīng)費(fèi)項(xiàng)目(201011005-2B)
【分類號】：P619.281

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本文編號：1557846