Abramovite

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Abramovite
Abramovite.jpg
General and classification
other names

IMA 2006-016

chemical formula Pb 2 SnInBiS 7
Mineral class
(and possibly department) 		Sulfides and sulfosalts
System no. to Strunz
and to Dana 		2.HF.25a
03.01.04.05
Crystallographic Data
Crystal system triclinic
Crystal class ; symbol triclinic pinacoidal; 1
Space group P 1 (No. 2)Template: room group / 2
Lattice parameters a  = 23.4 (3)  Å ; b  = 5.77 (2) Å; c  = 5.83 (1) Å
α  = 89.1 (5) °; β  = 89.9 (7) °; γ  = 91.5 (7) °
Frequent crystal faces pseudo-hexagonal, pseudo-tetragonal
Twinning lamellar after {100}
Physical Properties
Mohs hardness not defined
Density (g / cm 3 ) not defined
Cleavage completely after {100}
colour silver gray
Line color black
transparency opaque
shine Metallic luster

Abramovite is a very rarely occurring mineral from the mineral class of sulfides and sulfosalts . It crystallizes in the triclinic crystal system with the chemical composition Pb 2 SnInBiS 7 and forms lamellar-platelet-shaped, elongated crystals up to 1 × 0.2 mm in size.

Etymology and history

The mineral was first found in 2007 by MA Yudovskaya, NV Trubkin, EV Koporulina, DI Belakovsky, AV Mokhov, MV Kuznetsova and TI Golovanova in the type locality , the Kudriavy volcano on the Kuril island of Iturup and named after the Russian mineralogist Dmitri Vadimowitsch Abramow ( * 1963) named.

The Abramovite type material is kept in the Fersman Mineralogical Museum of the Russian Academy of Sciences in Moscow.

classification

Since the Abramovite was only recognized as an independent mineral in 2006, it is not yet listed in the 8th edition of the mineral classification according to Strunz , which has been outdated since 1977 . Only in the Lapis mineral directory according to Stefan Weiß, which, out of consideration for private collectors and institutional collections, is still based on this classic classification by Karl Hugo Strunz , the mineral received the system and mineral number. II / C.17-90 . In the "Lapis system" this corresponds to the class of "sulfides and sulfosalts" and there the section "Sulfides with metal: S, Se, Te ≈ 1: 1", where Abramovite together with Coirait , Franckeit , Herzenbergit , Kylindrite , Lévyclaudit , Merelaniit , Mohit , Stistait , Suredait , Teallit and Znamenskyit form an independent but unnamed group (as of 2018).

The 9th edition of Strunz's mineral systematics , which has been in effect since 2001 and was updated by the International Mineralogical Association (IMA) until 2009, classifies Abramovite in the department of "sulfosalts with SnS as a model". This is further subdivided according to the predominant metals in the compound, so that the mineral can be found according to its composition in the sub-section “With SnS and PbS archetype structural units”, where it is only together with Kylindrite and Lévyclaudit the “Kylindrite group “With the system no. 2.HF.25a forms.

The systematics of minerals according to Dana , which is mainly used in the English-speaking world , assigns Abramovite to the class of "sulfides and sulfosalts" and there in the department of "sulfosalts". Here he is together with Coirait, Franckeit, Incait , Kylindrit and Potosíit in the " Kylindrit group " with the system no. 03.01.04 within the subsection “ Sulphosalts with the ratio z / y> 4 and the composition (A + ) i (A 2+ ) j [B y C z ], A = metals, B = semimetals, C = non-metals" Find.

Crystal structure

Abramovit crystallizes triclinically in the space group P 1 (space group no. 2) and the lattice parameters a  = 23.4  Ångström , b  = 5.77 Å, c  = 5.83 Å, α = 89.1 °, β = 89, 9 ° and γ = 91.5 °. Template: room group / 2

Education and Locations

Abramovite formed in a fumaroles zone with hot volcanic gases at about 600-650  ° C . So far, finds are only known from the type locality Kudriavy.

On the crater rim of this volcano, other rare minerals, including the only known were rhenium -mineral rheniite found.

literature

  • MA Yudovskaya, NV Trubkin, EV Koporulina, DI Belakovsky, AV Mokhov, MV Kuznetsova, TI Golovanova: Абрамовит Pb 2 SnInBiS 7 - новьій минерал из фумарор вулка . In: Записки Российского Минералогического Общества (Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva) . tape 136 , no. 5 , 2007, p. 45–51 (Russian, rruff.info [PDF; 348 kB ; accessed on October 14, 2019] English translation and brief description: Abramovite, Pb 2 SnInBiS 7 - the new mineral from fumaroles of Kudryavy Volcano (Kurily Islands) ).
  • T. Scott Ercit, Paula C. Piilonen, Glenn Poirier, Kimberly T. Tait: New Mineral Names . In: American Mineralogist . tape 94 , 2009, p. 1075-1083 (English, rruff.info [PDF; 630 kB ; accessed on October 14, 2019] Abramovite p. 1075).

Web links

Commons : Abramovite  - collection of images, videos and audio files

Individual evidence

  1. ↑ Malcolm Back, William D. Birch, Michel Blondieau and others: The New IMA List of Minerals - A Work in Progress - Updated: September 2019. (PDF 2672 kB) In: cnmnc.main.jp. IMA / CNMNC, Marco Pasero, September 2019, accessed October 14, 2019 .
  2. ↑ a b c Abramovite . In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Eds.): Handbook of Mineralogy, Mineralogical Society of America . 2001 (English, handbookofmineralogy.org [PDF; 89  kB ; accessed on October 14, 2019]).
  3. ↑ T. Scott Ercit, Paula C. Piilonen, Glenn Poirier, Kimberly T. Tait: New Mineral Names . In: American Mineralogist . tape 94 , 2009, p. 1075-1083 (English, rruff.info [PDF; 630 kB ; accessed on October 14, 2019] Abramovite p. 1075).
  4. ↑ Stefan Weiß: The large Lapis mineral directory. All minerals from A - Z and their properties. Status 03/2018 . 7th, completely revised and supplemented edition. Weise, Munich 2018, ISBN 978-3-921656-83-9 .
  5. ↑ Ernest H. Nickel, Monte C. Nichols: IMA / CNMNC List of Minerals 2009. (PDF 1703 kB) In: cnmnc.main.jp. IMA / CNMNC, January 2009, accessed October 14, 2019 .
  6. ↑ Find location list for Abramovite in the Mineralienatlas and in Mindat
  7. ↑ Rheniite. In: mindat.org. Hudson Institute of Mineralogy, accessed October 14, 2019 .