Semseyite: Difference between revisions
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In [[Strunz mineral tables]] (8th edition) Semseyite was designated as a Sulfosalt. With Strunz mineral tables (9th edition), this class was redefined and subdivided to incorporate positively charged cations into the chemical formula. The mineral is now part of the Sulfosalts with SnS as a model and it forms along with [[Fülöppite]], [[Heteromorphite]], [[Plagionite]] and [[Rayite]] with lead as an additional cation. |
In [[Strunz mineral tables]] (8th edition) Semseyite was designated as a Sulfosalt. With Strunz mineral tables (9th edition), this class was redefined and subdivided to incorporate positively charged cations into the chemical formula. The mineral is now part of the Sulfosalts with SnS as a model and it forms along with [[Fülöppite]], [[Heteromorphite]], [[Plagionite]] and [[Rayite]] with lead as an additional cation. |
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Similarly, |
Similarly, [[Dana classification]] Semseyite is assigned to the class of sulfides and is 2,0 < z/y < 2,49 and the composition (A<sup>+</sup>) <sub>i</sub> (A<sup>2+</sup>) <sub>j</sub> [B<sub>y</sub>C<sub>z</sub>] “. |
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== education and discovery sites == |
== education and discovery sites == |
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Revision as of 21:35, 7 February 2011
| Semseyite | |
|---|---|
 | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | Pb9 Sb 8 S21 |
| Crystal system | Monoclinic |
| Crystal class | Prism; C 2/c |
| Identification | |
| Color | Dark gray to black |
Semseyite is a rarely occurring mineral and is part of the homologous class of lead antimony sulfides. It crystallizes monoclinically with crystals of unequal length and with the chemical composition Pb9Sb8S21. Additionally, the mineral will aggregate from dark gray to black.
Description
Etymology and history
Initially Semseyite was discovered in the Felsöbánya mine in Baia Sprie, Romania in 1881 by [József Sándor Krenner]] (1839-1920). The mineral was named after Andor of Semsey (1833-1923), a Hungarian nobleman and mineralogist.
Classification
In Strunz mineral tables (8th edition) Semseyite was designated as a Sulfosalt. With Strunz mineral tables (9th edition), this class was redefined and subdivided to incorporate positively charged cations into the chemical formula. The mineral is now part of the Sulfosalts with SnS as a model and it forms along with Fülöppite, Heteromorphite, Plagionite and Rayite with lead as an additional cation.
Similarly, under Dana classification Semseyite is assigned to the class of sulfides and sulfosalts where it is related by 2,0 < z/y < 2,49 and the composition (A+) i (A2+) j [ByCz] “.
modifications and varieties
education and discovery sites
Semseyit separates in hydrothermal solution EN at middle temperatures between 300 and 350° C ab[2]. Begleitminerale are among other things Bournonit, Jamesonit, quartz, Sphalerit and Zinckenit.
Beside its type locality Baia Sprie was found the mineral in Romania still in „the mine Herja “(Baia Mare) and Satu Mare. Herja is considered thereby as one of the best occurrences for Semseyit at all, with mineral finds between and three centimeters a size and technical or rosettenförmigem AussehenCite error: The <ref> tag has too many names (see the help page)..
World-wide Semseyit could so far at 132 discovery sites proven (conditions: 2009) [3] become, so among other things in Jujuy and Salta in Argentina; unite regions of the Bolivian departments Oruro and Potosí; with Chaskowo in Bulgaria; in the Chinese region Yizhang; several regions of Germany and France; unite regions Great Britain; in Bhilwara (India); Iran; Ireland; the Italian regions Piedmont and Tuscany; on Honshū in Japan; in British Columbia and Ontario in Canada; with upper mountain at the burner in Austria; Peru; in circle Maramureș in Romania; in the eastern and western regions Siberia s; Slovakia; Spain; in the Czech Bohemia; in the Hungarian “Pilsengebirge” as well as unite regions The USA.
<! --== morphology ==-->
structure
Semseyit crystallizes in the monoclinic crystal system in space group “C 2 C” with lattice parameters the n a = 13,603 Å, b = 11,936 Å, c = 24,453 Å and β = 106,047°[4] as well as four formula unit EN per elementary cell [5]
<! --== use ==--> <! --=== as building material ===--> <! --=== as pigment ===--> <! --=== as raw material ===--> <! --=== as gem stone ===--> <! --=== in chemistry ===--> <! --=== in the medicine ===--> <! --== manipulations and imitations ==--> <! --== precautionary measures ==--> <! --== esotericism ==-->
see also
References
Literature 
Oral literature Major written forms Long prose fiction Short prose fiction Prose genres Fiction Non-fiction Poetry genres Narrative Lyric Lists Dramatic genres History Lists and outlines Theory and criticism 
Literature portalLiterature Oral literature Major written forms Long prose fiction Short prose fiction Prose genres Fiction Non-fiction Poetry genres Narrative Lyric Lists Dramatic genres History Lists and outlines Theory and criticism Literature portal
External links
Wikimedia Commons has media related to Semseyite.- Mineral data sheet - Semseyite (English, pdf 64.5 KB)
- [http://www.mindat.org/click.php?enc=aHR0cDovL3d3dy53ZWJtaW5lcmFsLmNvbS9kYXRhL1NlbXNleWl0ZS5zaHRtbA%3D%3D semseyit Look for Semseyite on Webmineral
- ^ J.J. Périchaud : "Les Gisements Métalliques du District à Antimoine de Brioude-Massiac (Massif Central Français)", BRGM, 1968
- ^ Andreas Kamrath: “Geology and mineralogy of ore stores Herja”
- ^ MinDat - Localities for Semseyite
- ^ American Mineralogist Crystal Structure DATA base - Semseyite (English, 1974)
- ^ Cite error: The named reference
Webmin ral”was invoked but never defined (see the help page).
