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Minerals 2012, 2(4), 426-434; doi:10.3390/min2040426
Article

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

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Received: 28 August 2012; in revised form: 17 October 2012 / Accepted: 18 October 2012 / Published: 6 November 2012
(This article belongs to the Special Issue Advances in Economic Minerals)
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Abstract: 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 L3-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.
Keywords: indium; carrier minerals; polymetallic sulphide deposits; Iberian Pyrite Belt; crystal chemistry; XANES indium; carrier minerals; polymetallic sulphide deposits; Iberian Pyrite Belt; crystal chemistry; XANES
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Figueiredo, M.-O.; Silva, T.P.; Oliveira, D.D.; Rosa, D. Indium-Carrier Minerals in Polymetallic Sulphide Ore Deposits: A Crystal Chemical Insight into an Indium Binding State Supported by X-ray Absorption Spectroscopy Data. Minerals 2012, 2, 426-434.

AMA Style

Figueiredo M-O, Silva TP, Oliveira DD, Rosa D. Indium-Carrier Minerals in Polymetallic Sulphide Ore Deposits: A Crystal Chemical Insight into an Indium Binding State Supported by X-ray Absorption Spectroscopy Data. Minerals. 2012; 2(4):426-434.

Chicago/Turabian Style

Figueiredo, Maria-Ondina; Silva, Teresa P.; Oliveira, Daniel D.; Rosa, Diogo. 2012. "Indium-Carrier Minerals in Polymetallic Sulphide Ore Deposits: A Crystal Chemical Insight into an Indium Binding State Supported by X-ray Absorption Spectroscopy Data." Minerals 2, no. 4: 426-434.


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