意大利南亚平宁卡拉布里亚-巴西利卡塔边界蛇绿岩单元蛇纹岩岩石学、地球化学和矿物学研究

IF 4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Fibers Pub Date : 2023-09-23 DOI:10.3390/fib11100081
Giovanna Rizzo, Roberto Buccione, Marilena Dichicco, Rosalda Punturo, Giovanni Mongelli
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引用次数: 0

摘要

对蛇纹岩单位(卡拉布里亚-巴西利卡塔边界,亚平宁山脉南部)的蛇纹岩样本进行了多分析研究,样本采集自位于波里诺联合国教科文组织世界地质公园内的一个当地称为“Pietrapica”的蛇纹岩采石场。光学显微镜观察揭示了岩石学特征,ICP-MS评价了岩石的化学成分,EMPA矿物化学、拉曼光谱和x射线粉末衍射综合分析了岩石的矿物成分。岩石学研究表明,Pietrapica采石场蛇纹岩主要由蛇纹岩群矿物、角闪孔矿物和碳酸盐矿物组成,滑石和cr尖晶石丰度较低。拉曼光谱和x射线粉末衍射分析清楚地表明,碳酸盐矿物、蛇纹石和角闪石类矿物是主要相,其次是2:1层状硅酸盐。利用电子探针对蛇纹石样品中的蛇纹石、角闪石、绿泥石、斜辉石、磁铁矿、滑石、石英和钛矿等矿物进行了显微分析。整体地球化学特征主要由氧化物SiO2、MgO和Fe2O3主导,而最丰富的微量元素是Ni和Cr。化学分析表明,在研究的蛇纹岩中,Ni和Cr等重金属超出了意大利公共、私人和住宅绿色以及商业和工业用途的最大允许限度,这代表了潜在的环境问题。无论如何,这些重金属中的一些最近被欧洲列为关键原材料,因此,考虑到它们的经济潜力,Pietrapica废弃的采石场可能代表着一种新的资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Petrography, Geochemistry and Mineralogy of Serpentinite Rocks Exploited in the Ophiolite Units at the Calabria-Basilicata Boundary, Southern Apennine (Italy)
A multi-analytical study on serpentinites in the ophiolite units (Calabria-Basilicata boundary, southern Apennines) was carried out on samples collected from a serpentinite quarry, locally called “Pietrapica”, which sitsin the Pollino UNESCO Global Geopark. Optical microscopy observations revealed the petrographic characteristics, ICP-MS was used to assess the chemical composition while EMPA mineral chemistry, Raman spectroscopy and X-Ray Powder Diffraction and were used altogether to trace the mineral composition of the rocks. Petrography revealed that serpentinites from Pietrapica quarry are essentially composed of serpentine group minerals, amphibole and carbonate minerals with lower abundances of talc and Cr-spinel. Raman spectroscopy and X-ray powder diffraction analysis clearly allowed to establish that carbonate minerals, serpentine and amphibole-like minerals, are the dominant phases, followed by 2:1 phyllosilicate. Electron probe microanalyses were carried out on different minerals in serpentinites samples including serpentine, amphibole, chlorite, clinopyroxene, magnetite, talc, quartz and titanite which are often associated with carbonate veins. Bulk geochemistry is dominated by major oxides SiO2, MgO and Fe2O3 while the most abundant trace elements are Ni and Cr. Chemical analysis showed that some heavy metals in the studied serpentinites such as Ni and Cr, are beyond the maximum admissible limits for Italian normative for public, private and residential green as well as for commercial and industrial use representing a potential environmental concern. Anyway, some of these heavy metals have been recently listed by Europe as critical raw materials and therefore, the Pietrapica abandoned quarry could represent a new resource considering their economic potentiality.
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来源期刊
Fibers
Fibers Engineering-Civil and Structural Engineering
CiteScore
7.00
自引率
7.70%
发文量
92
审稿时长
11 weeks
期刊介绍: Fibers (ISSN 2079-6439) is a peer-reviewed scientific journal that publishes original articles, critical reviews, research notes and short communications on the materials science and all other empirical and theoretical studies of fibers, providing a forum for integrating fiber research across many disciplines. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. The following topics are relevant and within the scope of this journal: -textile fibers -natural fibers and biological microfibrils -metallic fibers -optic fibers -carbon fibers -silicon carbide fibers -fiberglass -mineral fibers -cellulose fibers -polymer fibers -microfibers, nanofibers and nanotubes -new processing methods for fibers -chemistry of fiber materials -physical properties of fibers -exposure to and toxicology of fibers -biokinetics of fibers -the diversity of fiber origins
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