应用FTIR-XRD-XRF分析测试技术研究新型仿制绿松石的矿物学特征

严俊; 刘晓波; 王巨安; 方飚; 刘培钧; 杨彬彬

doi:10.15898/j.cnki.11-2131/td.2015.05.008

应用FTIR-XRD-XRF分析测试技术研究新型仿制绿松石的矿物学特征

1.
浙江省质量检测科学研究院, 浙江杭州 310013

2.
浙江大学材料科学与工程学系, 浙江杭州 310027

3.
北华大学机械学院, 吉林吉林市 132021

基金项目: 国家自然科学基金资助项目(21173193);浙江省质量监督系统科研计划项目(20130207);浙江省质检院博士启动科研项目(2013BS01)

详细信息

中图分类号: P619.281;P575.4;P575.5

收稿日期: 2015-06-08

修回日期: 2015-07-16

录用日期: 2015-09-05

刊出日期: 2015-05-25

Determination of Mineral Compositions of New Kinds of Imitated Turquoise by FTIR-XRD-XRF

1.
Zhejiang Institute of Quality Inspection Sciences, Hangzhou 310013, China

2.
Department of Material Sciences and Engineering, Zhejiang University, Hangzhou 310027, China

3.
College of Mechanical Engineering, Beihua University, Jilin 132021, China

Received Date: 08 June 2015

Revised Date: 16 July 2015

Accepted Date: 05 September 2015

Publish Date: 25 May 2015

摘要

摘要:
近年来绿松石及其仿制品的鉴定工作较多局限于应用傅里叶变换红外光谱对仿制品进行简单的筛选, 前人报道的仿制绿松石的矿物组成主要为单一的矿物相(如异极矿、三水铝石、磷铝石、羟硅硼钙石、菱镁矿等)。本文应用傅里叶变换红外光谱(FTIR)、X射线粉晶衍射(XRD)与X射线荧光光谱(XRF)对当前珠宝市场上几种新型仿制绿松石进行了初步分类, 并对不同类别的仿制绿松石的具体矿物组成、物相及晶型特征作了对比研究。结果表明, 这些新型仿制绿松石可分为三大类:一类主要由硅酸盐(斜硅钙石)与碳酸盐(方解石)两种矿物组成; 另一类为白云石与方解石两种碳酸盐矿物的混合相; 第三类以硅酸盐类为主要矿物, 并含有钡长石、辉石与石英。显然, 新型仿制绿松石的矿物组成明显相异于传统仿制品, 可见仿制绿松石的矿物组成日趋多样性、复杂化, 该现状必然对新型仿制样品的物相鉴定提出了更高的要求。
- 仿制绿松石 /
- 矿物组成 /
- 傅里叶变换红外光谱法 /
- X射线粉晶衍射法 /
- X射线荧光光谱法
Abstract:
Identification of turquoises and corresponding imitations is commonly determined by Fourier Transform Infrared (FTIR) Spectrometer. Previous studies have shown that imitation turquoise was mainly composed of a single mineral phase such as hemimorphite, gibbsite, variscite, hydroxyl datolite, or magnesite. Fourier Transform Infrared (FTIR) Spectroscopy, X-ray Diffraction (XRD) and X-ray Fluorescence Spectroscopy (XRF) were used to investigate new kinds of imitation turquoises in order to classify them based on their mineral compositions and the method is described in this paper. Mineral compositions, crystal phases and crystalline appearance of different types of imitation turquoises were also compared. Results show that new kinds of imitation turquoises in this study can be mainly classified into three groups. The first group is mainly composed of silicate (larnite) and carbonate (calcite). The second group is composed of mixtures of calcite and dolomite. The third group consists of silicate, and minor barium feldspar, pyroxene and quartz. The mineral compositions of new kinds of imitation turquoises were significantly different from those of traditional imitations. In other words, the mineral compositions of imitation turquoises are becoming more and more diverse and complicated, which implies a higher demand for jewelry inspection agencies and researchers.
- imitated turquoise /
- mineral composition /
- Fourier Transform Infrared Spectroscopy (FTIR) /
- X-ray Diffraction (XRD) /
- X-ray Fluorescence Spectroscopy (XRF)

HTML全文

图 1 几种典型的仿制绿松石样品(a~e)与天然绿松石样品(f)的光学照片

Figure 1.

下载: 全尺寸图片幻灯片

图 2 不同类型的仿制绿松石的红外光谱谱图(a—不同类别仿制品高频区红外特征；b—TM-0001、TB-1104与TB-1118晶格振动吸收峰；c—仿制品TB-1117与TB-1268晶格振动吸收峰)

Figure 2.

下载: 全尺寸图片幻灯片

图 3 不同类型仿制绿松石样品(a—TM-0001, b—TB-1118) 的X射线粉晶衍射谱图

Figure 3.

下载: 全尺寸图片幻灯片

图 4 仿制绿松石样品(TB-1268) 的X射线粉晶衍射谱图

Figure 4.

下载: 全尺寸图片幻灯片

表 1 天然绿松石、新型仿制与传统仿制绿松石的矿物组成

Table 1. The mineral compositions of natural turquoise, new imitation turquoise and traditional imitation turquoise

绿松石品名及来源	主体矿物组成	化学式	参考文献
马鞍山绿松石	含铜铝的磷酸盐	CuAl₆·(PO₄)₄(OH)₈·5H₂O	[8]
传统仿制绿松石	磷铝石	Al(H ₂O) ₂[PO ₄]	[6]
	白云质大理岩	-
	异极矿	Zn₄[Si₂O₇](OH)₂·H₂O
	菱镁矿	4MgCO₃·Mg(OH)₂·4H₂O
	三水铝石	Al(OH)₃	[5]
	羟硅硼钙石	Ca₂B₅SiO₉(OH)₅	-
新型仿制绿松石	以TM 0001为例	Ca₂SiO₄, CaCO₃	本文
	以TB 1118为例	CaMg(CO₃)₂, CaCO₃
	以TB 1268为例	MgSiO₄, SiO₂, BaAl₂Si₂O ₈

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参考文献(15)

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应用FTIR-XRD-XRF分析测试技术研究新型仿制绿松石的矿物学特征

1. 浙江省质量检测科学研究院, 浙江 杭州 310013 2. 浙江大学材料科学与工程学系, 浙江 杭州 310027 3. 北华大学机械学院, 吉林 吉林市 132021

Determination of Mineral Compositions of New Kinds of Imitated Turquoise by FTIR-XRD-XRF

1. Zhejiang Institute of Quality Inspection Sciences, Hangzhou 310013, China 2. Department of Material Sciences and Engineering, Zhejiang University, Hangzhou 310027, China 3. College of Mechanical Engineering, Beihua University, Jilin 132021, China

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目录

1.
浙江省质量检测科学研究院, 浙江杭州 310013

2.
浙江大学材料科学与工程学系, 浙江杭州 310027

3.
北华大学机械学院, 吉林吉林市 132021

1.
Zhejiang Institute of Quality Inspection Sciences, Hangzhou 310013, China

2.
Department of Material Sciences and Engineering, Zhejiang University, Hangzhou 310027, China

3.
College of Mechanical Engineering, Beihua University, Jilin 132021, China