【摘要】：近年來(lái),珠寶市場(chǎng)上出現(xiàn)了一種商業(yè)名稱為"紅碧石"的玉石,因其外觀,特別是紅色的體色與南紅相近,常被作為南紅的仿制品進(jìn)行出售。本文采用常規(guī)寶石學(xué)測(cè)試、紅外光譜、激光拉曼光譜、X射線粉晶衍射、紫外-可見(jiàn)、近紅外光譜等方法,對(duì)"紅碧石"樣品的寶石礦物學(xué)特征進(jìn)行研究。結(jié)果表明,"紅碧石"整體呈現(xiàn)弱-中等玻璃光澤,折射率范圍為1.53~1.54,摩氏硬度為6~7,與石英質(zhì)玉石基本一致。紅外光譜、激光拉曼光譜、X射線粉晶衍射的測(cè)試結(jié)果表明:"紅碧石"的主要組成礦物為石英,次要礦物為赤鐵礦和鈣鐵榴石。近紅外光譜中5166~5200 cm~(-1)和4322 cm~(-1)附近的吸收指示了其中分子水及-OH的存在。對(duì)紫外-可見(jiàn)-近紅外光譜進(jìn)行一階求導(dǎo)分析,"紅碧石"樣品均顯示576 nm處赤鐵礦的主峰,表明"紅碧石"為赤鐵礦致色。
[Abstract]:In recent years, a kind of jade named "red and blue stone" has appeared in the jewelry market. Because of its appearance, especially the red body color is similar to the south red, it is often sold as the imitation of the south red. In this paper, the mineralogical characteristics of ruby samples were studied by conventional gemstone testing, infrared spectroscopy, laser Raman spectroscopy, X-ray powder diffraction, UV-Vis and near-infrared spectroscopy. The results show that the whole "Hongbite" has a weak to medium glass-gloss with a refractive index range of 1.53 ~ 1.54 and a hardness of 6 ~ 7, which is basically consistent with that of quartz jade. The infrared spectra and laser Raman spectra of X-ray powder diffraction show that the main mineral is quartz, the secondary minerals are hematite and calcium ferrite. The near infrared absorption near 5166 cm~ (-1) and 4322 cm~ (-1) indicates the presence of water and -OH. The first order derivation analysis of UV-Vis / NIR spectra showed that the main peak of hematite at 576 nm was shown in the samples of "Hongbite", which indicated that "ruby" was hematite chromogenic.
【作者單位】： 成都產(chǎn)品質(zhì)量檢測(cè)研究院有限責(zé)任公司珠寶中心;中國(guó)地質(zhì)大學(xué)(武漢)珠寶學(xué)院;中國(guó)地質(zhì)大學(xué)(武漢)地球科學(xué)學(xué)院;
【分類號(hào)】：P619.281
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本文編號(hào)：2233593