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首页> 外文期刊>International journal of metrology and quality engineering >Characterisation of chemically related asbestos amphiboles of actinolite: proposal for a specific differentiation in the diagram (Si apfu versus Mg/Mg+Fe2+)
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Characterisation of chemically related asbestos amphiboles of actinolite: proposal for a specific differentiation in the diagram (Si apfu versus Mg/Mg+Fe2+)

机译：阳起石化学相关的石棉闪石的表征：在图中进行特殊区分的建议（Si apfu与Mg / Mg + Fe2 +）

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Aggregates and rocks from quarries located in metropolitan France and New Caledonia, all likely to contain asbestiform amphiboles, were analysed by a routine laboratory (AD-LAB). Morphological observations were made using transmission electron microscopy and chemical analyses were obtained with energy dispersive X-ray spectroscopy. The chemical analyses obtained from amphiboles were treated in such a way that they could be plotted in a diagram (Si apfu versus Mg/Mg + Fe 2+ ). The points corresponding to analysed particles, classified as asbestos, define a broader compositional domain than that corresponding to the compositional areas of actinolite and tremolite. The creation of two new domains is proposed. Samples of basic metavolcanics and amphibolites collected by the Geological and Mining Research Bureau (BRGM) in different quarries of the Armorican Massif and the Massif Central containing calcic amphibole fibres have been the subject of polarized light microscope and electron microprobe analyses. The representative points of the spot chemical analyses performed on the very fine and ultrafine fibres are contained in the range defined previously. The diagram that has been determined from chemical analyses coupled with morphological and dimensional observations can help the “routine laboratories” to better characterise asbestiform calcic amphiboles, but it also allows comparisons with geological observations.
机译：来自法国大都会和新喀里多尼亚的采石场的聚集物和岩石，都可能含有石棉闪石，并通过常规实验室（AD-LAB）进行了分析。使用透射电子显微镜进行形态学观察，并且利用能量色散X射线光谱学获得化学分析。从闪石中获得的化学分析物经过处理，可以将它们绘制在图表中（Si apfu与Mg / Mg + Fe 2+的关系）。对应于被分析为石棉的被分析颗粒的点定义了比对应于阳起石和透闪石的组成区域更宽的组成区域。建议创建两个新域。地质矿产研究局（BRGM）在Armorican地块和Massif Central的不同采石场中收集的含钙闪石纤维的基本偏火山岩和闪石样品已成为偏振光显微镜和电子微探针分析的主题。在极细和超细纤维上进行的现场化学分析的代表点包含在先前定义的范围内。通过化学分析，形态学和尺寸观测确定的图表可以帮助“常规实验室”更好地表征石棉状钙闪石，但也可以与地质观测进行比较。

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