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Pterolite

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About PteroliteHide

Name:
The name was introduced by Breithaupt (1865) for a dense, fibrous or featherlike mineral from the Langesundsfjorden area, Norway ("Brevig"). Breithaupt thought it to be a new mica mineral. Later it was recognized as a mixture (Brøgger 1890). The name, pterolite, is derived from the greek for feather.

This pseudomorph occurs as rims around or completely replacing black amphibole crystals occuring in the syenite pegmatites in the Langesundsfjorden and Tvedalen districts, Norway.
A Mixture Of:
A pseudomorph after amphibole, consisting of an intimate intergrowth of biotite and aegirine.


Other Language Names for PteroliteHide

German:Pterolith

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Pterolite associated with Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
1 photo of Pterolite associated with NephelineNa3K(Al4Si4O16)
1 photo of Pterolite associated with MicroclineK(AlSi3O8)

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 PteroliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Breithaupt, A. (1865): Mineralogische Studien. Berg- und Huettenmænnische Zeitung, 24: 335-337
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. 663 pp + 28 plates (p. 418-422)
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 pp

Internet Links for PteroliteHide

Localities for PteroliteHide

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.
Norway
 
  • Telemark
    • Porsgrunn
      • Auenslandet
        • Sagåsen
Knut Edvard Larsen collection # 1835
  • Vestfold
    • Larvik
      • Langesundsfjorden
        • Barkevik area
          • Barkevika
Knut Edvard Larsen observation in field aug.2012
          • Kjeøya
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. 663 pp + 28 plates (p. 468-477)
Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineralogie 16. 663 pp (p.133)
      • Tvedalen
        • Tuften (Tuften 1 Quarry; Tuften 2 Quarry)
Knut Edvard Larsen photo and observation in field 10.11.2011
 
Mineral and/or Locality  
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