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Teschenite

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Teschenite is a type of igneous rock, which was first described and named by Ludwig Hohenegger [cs] in 1861.[1] Its name is derived from the town of Český Těšín, where it was discovered. Until 1892 the name in use for the rock was tchesenit, which is derived from the German name for Český Těšín. The name teschenite (těšínit in Czech) was first used by mineralogist Josef Klvaňa [cs], and in 1918 the same name was declared official by František Slavík.[2][3][4][5]

Image of a small, non-uniform and jagged white rock with black stripes of mineral running across the surface (an image of teschenite)
Sample of teschenite from Poland

The name crinanite has previously been used as a synonym for teschenite,[6] however there have been attempts to standardize and stop its use.[7][8]

Geological composition edit

Teschenite is a mixture of several minerals including titan-augite, labradorite, analcime and in lesser quantities olivine.[9] Teschenite also has subtypes such as lugarite.[10] Rocks related to teschenite are referred to as rocks of the teschenite association.[11]

Location of occurrence edit

Teschenite has been found in Scotland, Portugal, the Caucasus Mountains, Siberia, Kenya, Myanmar, Taiwan, Australia and New Zealand.[9][12]

In the Czech Republic, teschenite is primarily found in the volcanic region of the Beskids which stretch from the borders of Moravia to regions east of Český Těšín.[3] Specific documented deposits are in Tichá, in the basin of the Ostravice river, in the Řepiště municipality and in a quarry near Žermanice Reservoir.[3][9][13][14][15] Historically, olivine-rich teschenite has also been mined in an old quarry in Straník.[16]

References edit

  1. ^ "OSEL.CZ". www.osel.cz. Retrieved 2024-04-26.
  2. ^ "Nerosty vulkanických hornin". moravske-karpaty.cz (in Czech). 10 November 2013. Retrieved April 24, 2024.
  3. ^ a b c Petránek, Jan. "podbeskydská vulkanická oblast - Geologická encyklopedie". Česká gelogická služba. Retrieved 2024-04-27.
  4. ^ Hruban, Robert (November 10, 2013). "Nerosty vulkanických hornin". moravske-karpaty.cz (in Czech). Retrieved April 24, 2024.
  5. ^ Budínská, Gabriela (October 31, 2017). "ic-tesin.cz". Turistické informační centrum Český Těšín. Retrieved April 24, 2024.
  6. ^ "www.mindat.org". mindat.org. Retrieved April 27, 2024.
  7. ^ Wilkinson, J. F. G. (August 1955). "The Terms Teschenite and Crinanite". Geological Magazine. 92 (4): 282–290. Bibcode:1955GeoM...92..282W. doi:10.1017/S0016756800064323. ISSN 1469-5081.
  8. ^ "Crinanite, western Scotland". turnstone.ca. Retrieved 2024-04-27.
  9. ^ a b c "Teschenite". mindat.org. Retrieved April 27, 2024.
  10. ^ Wilkinson, J. F. G. (August 1955). "The Terms Teschenite and Crinanite". Geological Magazine. 92 (4): 282–290. Bibcode:1955GeoM...92..282W. doi:10.1017/S0016756800064323. ISSN 1469-5081.
  11. ^ Čípová, Irena (2006). Využívání hornin těšínitové asociace v pravěku (Thesis) (in Czech). Masaryk University, Faculty of Science.
  12. ^ Navrátilová, Mirka. "TĚŠÍNIT". petrol.sci.muni.cz. Archived from the original on April 24, 2024. Retrieved 2024-04-27.
  13. ^ "www.frydekmistek.cz" (PDF). Archived from the original (PDF) on 2021-09-18. Retrieved 2024-04-26.
  14. ^ Melnyk, Anastasia; Pospíšil, Lubomil (2022-12-20). "Geofyzikální mapování výskytu těšínitové asociace hornin v okolí Žermanic – slezská jednotka". Geologické výzkumy na Moravě a ve Slezsku (in Czech). 29 (1–2). doi:10.5817/GVMS2022-21299. ISSN 2336-4378.
  15. ^ "Těšínit - Řepiště". sci.muni.cz (in Czech). Retrieved 2024-04-26.
  16. ^ Schuchová, Kristýna; Bubík, Miroslav. "Geopark Podbeskydí" (PDF). geoparkpodbeskydi.cz (in Czech). Retrieved April 26, 2024.
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