银四面体-(Cd)， Ag6(Cu4Cd2)Sb4S13，四面体基团的新成员，来自斯洛伐克Rudno nad ronom。

IF 2.8 3区地球科学 Q2 MINERALOGY

Mineralogical Magazine Pub Date : 2022-12-19 DOI:10.1180/mgm.2022.138

T. Mikuš, Jozef Vlasáč, J. Majzlan, J. Sejkora, G. Steciuk, J. Plášil, C. Rößler, Christian Matthes

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引用次数: 1

摘要

摘要银四面体-（Cd），Ag6（Cu4Cd2）Sb4S13，已被国际矿物学协会新矿物、命名和分类委员会批准为一种新矿物，使用了斯洛伐克共和国Rudno nad Hronom的样品。它以大小达30μm的二面体颗粒出现，颜色从钢灰色到黑色，具有金属光泽，与绿柱石和其他四面体族矿物[银四面体-（Zn）和四面体-（Zn。银四面体-（Cd）是各向同性的，颜色为灰色，呈乳白色，并迅速（数十分钟）变色为橙色-棕色。矿石矿物学委员会（COM）波长在空气中的反射率数据为[λ（nm），R（%）]:470，30.4；54630.3；58930.3；以及650、28.7。所研究样品的化学式，根据∑Me=每个化学式单位16个原子重新计算，为：（Ag3.28Cu2.72）Ʃ6.00[Cu4（Cd1.68Fe0.27Zn0.16）]\425\6.11（Sb3.71As0.15）\425\3.86S12.79。银四面体-（Cd）为立方，I$\bar｛4｝$3m，a=10.65（2）Å，V=1208（4）Å3，Z=2。银四面体-（Cd）与四面体群的其他成员是同型的。本文讨论了银四面体-（Cd）与氟绿柱石系列其他成员的结构关系，并简要评述了该物种的研究进展。

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Argentotetrahedrite-(Cd), Ag6(Cu4Cd2)Sb4S13, a new member of the tetrahedrite group from Rudno nad Hronom, Slovakia.

Abstract Argentotetrahedrite-(Cd), Ag6(Cu4Cd2)Sb4S13, has been approved as a new mineral species by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association using samples from Rudno nad Hronom, Slovak Republic. It occurs as anhedral grains up to 30 μm in size, steel-grey to black in colour, with a metallic lustre, in association with greenockite and other tetrahedrite-group minerals [argentotetrahedrite-(Zn) and tetrahedrite-(Zn)], earlier base-metal minerals, Ag sulfides and sulfosalts (acanthite, pyrargyrite and polybasite) and later galena. Argentotetrahedrite-(Cd) is isotropic, grey in colour, with a creamy tint and rapidly (tens of minutes) tarnishes to orange–brown. Reflectance data for Commission on Ore Mineralogy (COM) wavelengths in air are [λ (nm), R (%)]: 470, 30.4; 546, 30.3; 589, 30.3; and 650, 28.7. The chemical formula of the samples studied, recalculated on the basis of ΣMe = 16 atoms per formula unit, is: (Ag3.28Cu2.72)Ʃ6.00[Cu4(Cd1.68Fe0.27Zn0.16)]Ʃ6.11(Sb3.71As0.15)Ʃ3.86S12.79. Argentotetrahedrite-(Cd) is cubic, I$\bar{4}$3m, with a = 10.65(2) Å, V = 1208(4) Å3 and Z = 2. Argentotetrahedrite-(Cd) is isotypic with other members of the tetrahedrite group. The structural relationship between argentotetrahedrite-(Cd) and other members of the freibergite series are discussed and previous findings of this species are briefly reviewed.

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来源期刊

Mineralogical Magazine 地学-矿物学

CiteScore

4.00

自引率

25.90%

发文量

104

审稿时长

6-12 weeks

期刊介绍： Mineralogical Magazine is an international journal of mineral sciences which covers the fields of mineralogy, crystallography, geochemistry, petrology, environmental geology and economic geology. The journal has been published continuously since the founding of the Mineralogical Society of Great Britain and Ireland in 1876 and is a leading journal in its field.