俄罗斯北乌拉尔Vorontsovskoe金矿Pokhodyashinite, CuTlSb2(Sb1-xTlx)AsS7-x,一个新铊亚硫酸矿

IF 1.1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
A. Kasatkin, J. Plášil, E. Makovicky, R. Škoda, A. Agakhanov, M. V. Tsyganko
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引用次数: 1

摘要

Pokhodyashinite CuTlSb 2 (Sb 1 - x Tl x) as7 - x是在俄罗斯北乌拉尔斯维尔德洛夫斯克州Vorontsovskoe金矿床发现的一种新亚硫酸盐。它在方解石中形成大小可达0.1 × 0.05 mm的四面体颗粒,与主要的矿石、黄铁矿、雄黄和次要的重晶石、燧石、含砷的氟磷灰石、和谐石、前辉石、天然金和丰富的硫酸盐有关。pokhodyashite是黑色的,不透明的,具有金属光泽和黑色条纹。它是脆的,在{100}上断裂不均匀,解理差。维氏硬度(VHN, 20 g载荷)为55 kg/mm 2,对应莫氏硬度为2。计算密度为5.169 g/ cm3。在反射光下,pokhodyashite呈灰白色,双反射率明显。在交叉极性中,它是强各向异性的;旋转色调从深棕色灰色到浅蓝灰色不等。没有观察到内部反射。IMA矿石矿物学委员会推荐的波长反射率值为(R min / R max, %): 28.9/34.6 (470 nm), 27.6/33.4 (546 nm), 26.7/32.4 (589 nm), 26.1/31.1 (650 nm)。基于Σ Me = 6 apfu的pokhodyashite经验公式为Cu
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pokhodyashinite, CuTlSb2(Sb1-xTlx)AsS7-x, a new thallium sulfosalt from the Vorontsovskoe gold deposit, Northern Urals, Russia
Pokhodyashinite CuTlSb 2 (Sb 1– x Tl x )AsS 7– x , is a new sulfosalt from the Vorontsovskoe gold deposit, Sverdlovsk Oblast’, Northern Urals, Russia. It forms anhedral grains up to 0.1 × 0.05 mm in size in calcite and is associated with major orpi-ment, pyrite, realgar and minor baryte, clinochlore, As-bearing fluorapatite, harmotome, prehnite, native gold and a rich spectrum of sulfosalts. Pokhodyashinite is black, opaque, and has a metallic luster and a black streak. It is brittle, with an uneven fracture and poor cleavage on {100}. The Vickers hardness (VHN, 20 g load) is 55 kg/mm 2 , corresponding to a Mohs hardness of 2. The calculated density is 5.169 g/cm 3 . In reflected light, pokhodyashinite is grayish-white, bireflectance is distinct. In crossed polars, it is strongly anisotropic; rotation tints vary from dark brownish gray to light bluish-gray. No internal reflections are observed. The reflectance values for wavelengths recommended by the Commission on Ore Mineralogy of the IMA are ( R min / R max , %): 28.9/34.6 (470 nm), 27.6/33.4 (546 nm), 26.7/32.4 (589 nm), 26.1/31.1 (650 nm). The empirical formula of pokhodyashinite based on Σ Me = 6 apfu is Cu
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来源期刊
Journal of Geosciences
Journal of Geosciences GEOSCIENCES, MULTIDISCIPLINARY-MINERALOGY
CiteScore
2.30
自引率
7.10%
发文量
15
审稿时长
>12 weeks
期刊介绍: The Journal of Geosciences is an international peer-reviewed journal published by the Czech Geological Society with support from the Czech Geological Survey. It accepts high-quality original research or review papers dealing with all aspects of the nature and origin of igneous and metamorphic rocks. The Journal focuses, mainly but not exclusively, on: -Process-oriented regional studies of igneous and metamorphic complexes- Research in structural geology and tectonics- Igneous and metamorphic petrology- Mineral chemistry and mineralogy- Major- and trace-element geochemistry, isotope geochemistry- Dating igneous activity and metamorphic events- Experimental petrology and mineralogy- Theoretical models of igneous and metamorphic processes- Mineralizing processes and mineral deposits. All the papers are written in English, even though they may be accompanied by an additional Czech abstract. Each contribution is a subject to peer review by at least two independent reviewers, typically at least one from abroad. The Journal appears 2 to 4 times a year. Formally it is divided in annual volumes, each of them including 4 issues.
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