Dzhalindit

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Dzhalindit
General and classification
other names
  • Dshalindit or Djalindit
  • Jalindit (rare)
chemical formula In (OH 3 )
Mineral class
(and possibly department) 		Oxides and hydroxides
System no. to Strunz
and to Dana 		4.FC.05 ( 8th edition : IV / F.15)
03/06/05/01
Crystallographic Data
Crystal system cubic
Crystal class ; symbol cubic-disdodecahedral; 2 / m  3
Space group Im 3 (No. 204)Template: room group / 204
Lattice parameters a  = 7.95  Å
Formula units Z  = 8
Physical Properties
Mohs hardness 4 to 4.5
Density (g / cm 3 ) measured: 4.38 (synthetic); calculated: 4.344
Cleavage not defined
colour Yellow-brown
Line color Yellowish white
transparency translucent
shine not defined
Crystal optics
Refractive index n  = 1.725 (2)
Other properties
Chemical behavior soluble in hydrochloric acid and sulfuric acid

Dzhalindit is a rarely occurring mineral from the mineral class of oxides and hydroxides . It crystallizes in a cubic crystal system with the chemical composition In (OH 3 ) and is therefore chemically indium (III) hydroxide .

Dzhalindit is translucent and is mostly found in the form of massive mineral aggregates of yellow-brown color or forms pseudomorphoses according to Indit .

Etymology and history

Dzhalindite was first in tin - deposit "Dzhalinda" in Maly Khingan Mountains in the Russian region of Khabarovsk discovered and described in 1963 by Alexander Dmitrievich Genkin (1919-2010) and IV Muraveva that the mineral after its type locality named.

Type material of the mineral is kept in the Mining Institute in St. Petersburg (catalog no. 106a / 1) and in the Fersman Museum (named after Alexander Evgenjewitsch Fersman ) in Moscow (catalog no. 65279).

classification

Already in the outdated, but partly still in use 8th edition of the mineral systematics according to Strunz , the dzhalindite belonged to the mineral class of "oxides and hydroxides" and there to the department of "hydroxides and oxidic hydrates (water-containing oxides with a layer structure)", where it belonged together with Bernalit and Söhngeit formed the unnamed group IV / F.15 .

The 9th edition of Strunz's mineral systematics , which has been in effect since 2001 and is used by the International Mineralogical Association (IMA), classifies the Dzhalindit in the category of "hydroxides (without V or U)". This is further subdivided according to the possible presence of hydroxide ions and crystal water as well as the crystal structure, so that the mineral according to its composition and structure is classified in the sub-section “Hydroxides with OH, without H 2 O; corner-linked octahedra "can be found where, together with Bernalit and Söhngeit, the now named" Söhngeit group "with the system no. 4.FC.05 forms.

The systematics of minerals according to Dana , which is mainly used in the English-speaking world , assigns the dzhalindite to the class of "oxides and hydroxides" and there in the department of "hydroxides and hydroxides containing oxides". Here it can be found in the unnamed group 06.03.05 within the subsection “Hydroxides and hydroxides containing (OH) 3 or (OH) 6 groups”.

Chemism

Depending on where it was found, the mineral may contain traces of other metals besides indium , including iron , tin or small amounts of copper . Pure indium (III) hydroxide contains 69.23% indium.

Crystal structure

Dzhalindite crystallizes isotypically with Söhngeit in the cubic crystal system in the space group Im 3 (space group no. 204) with the lattice parameter a  = 7.95  Å and 8 formula units per unit cell . Template: room group / 204

properties

Dzhalindit is readily soluble in hydrochloric acid (HCl) and sulfuric acid (H 2 SO 4 ), but not in nitric acid (HNO 3 ), iron (III) chloride (FeCl 3 ), potassium hydroxide (KOH) and potassium cyanide (KCN).

Education and Locations

Dzhalindite forms as a secondary mineral by conversion from Indit in the oxidation zone of cassiterite - deposits . In addition to indite and cassiterite, arsenopyrite , calcite , chalcopyrite , digenite , galena , quartz , roquesite , scorodite , sphalerite and stannite can also occur as accompanying minerals .

As a rare mineral formation, Dzhalindite could only be detected at a few sites, whereby so far (as of 2015) a little more than 10 sites are known. Besides its type locality, the tin deposit "Dzhalinda" in the region of Khabarovsk , the mineral occurred in Russia in the tin deposit "Verkhnee" in the mining area kavalerovo in the Primorye Territory in the Federal District Far East and in the gold-bearing tungsten - molybdenum -Lagerstätt "Bugdainskoe" ( Bugdaya ) in the Transbaikalia region in the federal district of Siberia .

In Germany , Dzhalindit has so far only been found near Zinnwald-Georgenfeld ( Ore Mountains ) in the Saxon Switzerland-Eastern Ore Mountains district.

Other well-known sites are the San Roque deposit in the Argentine province of Río Negro , the Mangabeira deposit near the municipality of Monte Alegre de Goiás in Brazil, Damxung in the Tibet Autonomous Region and Gejiu in the Honghe der Hani and Yi Autonomous District in China, the Mine “Jean Baptiste” near Agios Konstantinos ( Lavrio municipality ) in the Greek region of Attica , the Kawazu mine near Rendaiji in the prefecture of Shizuoka on the Japanese island of Honshū , Cínovec (German tin forest ) in Okres Teplice in the Czech Republic , the “War Eagle” mine "in the Nopah Range in Inyo County of California and the Flambeau mine near Ladysmith in Rusk County of Wisconsin in the United States and in the chatkal range belonging Arashan massif ( Tashkent Province ) in Uzbekistan .

See also

literature

  • AD Genkin, IV Muravéva: Indite and dzhalindite, new indium minerals. In: Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva. Volume 92, 1963, pp. 445-457 (Russian)
  • Michael Fleischer : New Mineral Names. In: The American Mineralogist. Volume 49, March – April 1964, pp. 439–448 ( PDF 666kB ; Dzhalindit from p. 439)
  • JK Sutherland: A second occurrence of dzhalindite. In: The Canadian Mineralogist. Volume 10, 1971, pp. 781–786 ( PDF )

Web links

Individual evidence

  1. ↑ a b c Hans Jürgen Rösler : Textbook of Mineralogy . 4th revised and expanded edition. German publishing house for basic industry (VEB), Leipzig 1987, ISBN 3-342-00288-3 , p.  427 .
  2. ^ Carl Hintze : New minerals and new mineral names (with supplements, corrections and additions). Supplementary volume 3, De Gruyter, Berlin [ua] 1968, p. 91 (accessed via De Gruyter Online)
  3. ↑ a b c d e Hugo Strunz , Ernest H. Nickel: Strunz Mineralogical Tables . 9th edition. E. Schweizerbart'sche Verlagbuchhandlung (Nägele and Obermiller), Stuttgart 2001, ISBN 3-510-65188-X , p.  232 .
  4. ↑ a b Webmineral - Dzhalindite (English)
  5. ↑ a b c d Dzhalindite , In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Eds.): Handbook of Mineralogy, Mineralogical Society of America , 2001 ( PDF 66.9 kB )
  6. ↑ a b Stefan Weiß: The large Lapis mineral directory. All minerals from A - Z and their properties . 5th completely revised and supplemented edition. Weise, Munich 2008, ISBN 978-3-921656-70-9 .
  7. ^ Friedrich Klockmann : Klockmanns textbook of mineralogy . Ed .: Paul Ramdohr , Hugo Strunz . 16th edition. Enke , Stuttgart 1978, ISBN 3-432-82986-8 , pp.  556 (first edition: 1891).
  8. ^ A b Michael Fleischer : New Mineral Names. In: The American Mineralogist. Volume 49, March – April 1964 ( PDF 666kB ; Dzhalindit from p. 1)
  9. ↑ a b Mindat - localities for Dzhalindit