Indite

Indit is a very rare mineral from the mineral class of " sulfides and sulfosalts ". It crystallizes in the cubic crystal system with the chemical composition of Fe 2 In2S4, that is an iron -indium- sulfide.

Indit found thus far only in the form of opaque, granular to massive mineral aggregates from 0.2 to 0.5 mm in size. The mineral is generally black, polished in areas of both white and shows a metallic luster.

Etymology and history

Indit was first discovered discovered in the Dzhalinda - Zinnlagerstätte the Maly - Khingan Mountains in Khabarovsk in Russia and described in 1963 by Alexandr Dimitrievich Genkin ( 1919-2010 ) and IV Murav'eva. It is named after the main component, the chemical element indium.

Classification

In the now outdated but still in use 8th edition of the mineral classification by Strunz the Indit belonged to the mineral class of " sulfides and sulfosalts " and then to the Department of " sulfides with the molar ratio of metal: sulfur, selenium, tellurium <1: 1 " where he along with Bornhardtit, Cadmoindit, Carrollite, Daubréelith, Fletcherit, Florensovit, greigite, Kalininit, linnaeite, Polydymit, Siegenit, Trüstedtit, Tyrrellit and Violarit the " Linneitgruppe " with the system no. II/D.01 formed.

The 9th edition valid since 2001 and of the International Mineralogical Association (IMA ) used the Strunz'schen Mineral classification assigns the Indit also in the class of " sulfides and sulfosalts ," there, however, in the department of " metal sulfides with M: S = 3: 4 and 2: 3 ". This is further subdivided by the exact molar ratio, so that the mineral according to its composition in the subsection "M: S = 3: 4" is to find where it, along with Bornhardtit, Cadmoindit, Carrollite, Cuproiridsit, Cuprorhodsit, Daubréelith, Ferrorhodsit Fletcherit, Florensovit, greigite, Kalininit, linnaeite, Malanit, Polydymit, Siegenit, Trüstedtit, Tyrrellit, Violarit and Xingzhongit the " Linneitgruppe " with the system no. 2.DA.05 forms.

The classification of minerals according to Dana assigns the Indit in the class of " sulfides and sulfosalts " and there in the department of " sulfide minerals ." Here he is with linnaeite, Carrollite, Fletcherit, Tyrrellit, Bornhardtit, Siegenit, Polydymit, Violarit, Trüstedtit, greigite, Daubréelith, Kalininit, Florensovit, Cuproiridsit, Cuprorhodsit, Malanit, Ferrorhodsit and Cadmoindit in the " Linneitgruppe ( Isometric: Fd3m ) " with the system number. 02:10:01 within the subdivision " sulfides - tellurides and selenides, including - with the composition AmBnXp, with (m n): p = 3:4 " to find.

Education and Locations

Indit is so far only from two sites in the Russian Far East is known, the type locality Dzhalinda - Zinnlagerstätte in Maly - Khingan Mountains and the Verkhnee deposit near Kawalerowo.

Crystal structure

Indit crystallizes in a cubic crystal system in the space group Fd3m ( Raumgruppen-Nr. 227 ) with the lattice parameters a = 10.62 Å, and eight formula units per unit cell.