Indium-Carrier Minerals in Polymetallic Sulphide Ore Deposits: A Crystal Chemical Insight into an Indium Binding State Supported by X-ray Absorption Spectroscopy Data

被引:9
作者
Figueiredo, Maria-Ondina [1 ,2 ]
da Silva, Teresa Pereira [2 ]
de Oliveira, Daniel [2 ]
Rosa, Diogo [3 ]
机构
[1] Univ Nova Lisboa, Fac Sci & Technol, Dept Mat Sci, CENIMAT I3N, P-2829516 Caparica, Portugal
[2] Natl Lab Energy & Geol LNEG, Unit Mineral Resources & Geophys, P-2610999 Amadora, Portugal
[3] Natl Geologiske Undersogelser Danmark & Gronland, Dept Petrol & Econ Geol, DK-1350 Copenhagen K, Denmark
来源
MINERALS | 2012年 / 2卷 / 04期
关键词
indium; carrier minerals; polymetallic sulphide deposits; Iberian Pyrite Belt; crystal chemistry; XANES;
D O I
10.3390/min2040426
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Indium is a typical chalcophile element of the Earth's crust, with a very low average content that seldom forms specific minerals, occurring mainly as dispersed in polymetallic sulphides. Indium recovery is based primarily on zinc extraction from sphalerite, the prototype of so-called tetrahedral sulphides, wherein metal ions fill half of the available tetrahedral sites within the cubic closest packing of sulphur anions, leaving interstices accessible for further in-filling. Ascertaining the tendency towards the establishment of In-In interactions through an x-ray absorption spectroscopy approach would efficiently contribute to understanding the behavior of indium in the carrier mineral. The successful results of applying such a near-edge absorption (XANES) study at In L-3-edge to samples collected at the Lagoa Salgada polymetallic orebody in the Iberian Pyrite Belt (IPB) are described and the crystal chemistry of indium is re-evaluated, disclosing a potential clue for the metal binding state in polymetallic sulphides.
引用
收藏
页码:426 / 434
页数:9
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