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Leptynite

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An obsolete term, initially applied to a fine-granied granulite-facies rock, predominantly consisting of alkali-feldspar, containing minor quartz, white mica, garnet and tourmaline, and with a planar gneissose structure. Later used for any white-coloured quartzofeldspathic rock, typically forming bands alternating with metabasic rock, irrespective of the intensity of metamorphism.


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Classification of LeptyniteHide

Mineralogy of LeptyniteHide

Essential minerals - these are minerals that are required within the classification of this rock:
FeldsparA petrological term for Feldspar Group.
Silica > QuartzSiO2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for LeptyniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fettes (et al.), Metamorphic Rocks - A Classification and Glossary of Terms (2007) Cambridge University Press

Internet Links for LeptyniteHide

Localities for LeptyniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Madagascar
 
  • Androy
    • Bekily
      • Belindo Mahasoa
Lautel, R. (1953): Etude géologique de la feuille Bekitro. Travaux du Bureau Géologique (Tananarive): 40: 1-34 + planches
    • Tsihombe
      • Tsihombe Commune
T. Praszkier report from site 2012
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, p. 335.
  • Anosy
    • Amboasary Sud
Besaire, H. (1966): Gites mineraux de Madagascar. Annales Géologiques de Madagascar XXXIV, Tananarive, p 395
        • Belafa area
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, p. 398.
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, p. 398.
      • Tranomaro
        • Ambindandrakemba
Besaire, H.(1966): Gites mineraux de Madagascar. Annales Géologiques de Madagascar XXXIV,Tananarive, p.396
Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p.396
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, p. 397.
Brenon, P. (1957) Etude des gisements de thorianite et de mica de la region de Tranomaro. [Title on journal]: 171-177.
    • Betroka
      • Ambatomivary
Savorin, A. (1937) Les gisements de mica phlogopite du Sud de Madagascar. Annales Géologiques du service des mines, VII, Tananarive. p. 9-23
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, p 316
      • Benato Toby
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, 309-310
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, 309-310
      • Ianabinda
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, p. 313.
      • Ianakafy
Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.588)
      • Isoanala
Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, p. 316.
    • Taolañaro (Fort Dauphin)
      • Taolañaro
        • Bezavona Massif
          • Ampamatoa
Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p. 40
  • Atsimo-Andrefana
    • Ampanihy
      • Ampanihy Ouest
Isatelle, F. (2009): Field Trip to Madagascar (Oct/Nov 2009) – Beseva Malaya Garnets Mining Area www.gems-geology.com
  • Betsiboka
    • Tsaratanàna
      • Bekapaika Commune
Giraud, P; Bertucat, M & Giraudon (1957): Etude geologique et prospection de la feuille Betrandraka [P-42]1/100.00 et du champ pegmatique de Berere. Travaux Bureau Geologique nr 82, Service Geologique, Tananarive 1957.
  • Ihorombe
    • Ihosy
      • Ihosy Commune
Nicollet, C. (1990) Occurrences of grandidierite, serendibite and tourmaline near Ihosy, southern Madagascar. Mineralogical Magazine: 54 (374): 131-133.
Mauritania
 
  • Tiris Zemmour Region
    • Aguelt El Mahba
Mauritanian Geological Survey (1995) database
    • F'dérik
      • Tourassin
Mauritanian Geological Survey (1995) database
    • Oued el Hamra
Mauritanian Geological Survey (1995) database
Mauritanian Geological Survey (1995) database
Mauritanian Geological Survey (1995) database
    • Oumm Roueissine
Mauritanian Geological Survey (1995) database
    • Tin Bessais
Mauritanian Geological Survey (1995) database
Mauritanian Geological Survey (1995) database
 
Mineral and/or Locality  
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