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

页码：426 / 434

页数：9

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