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Asbestos hedyphane

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Grey to brownish
An oriental overgrowth of a kaolinite-serpentine group mineral and a Pb,Ca arsenate of apatite type.
The material may look as asbestos chrysotile.

Up to 2,5 cm large, grey to brownish aggregates with a silky lustre found at Långban, Sweden were described by Sjögren (1991) as astbesthedyfan (asbestos hedyphane).
Fibers of this material was investigated with transmission electron microscopy by Hansen & O'Keeffe (1988). They showed that it consist of a mixture of a kaolinite-serpentine group mineral (antigorite ?) and a Ca arsenate with some Cl not identical with hedyphane.
the latter might be identical with hydroxylhedyphane ("the hydroxyl-bearing analogue of hedyphane described by Dunn et. al (1985)" (Holtstam et al. 1999)

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Physical Properties of Asbestos hedyphaneHide

Grey to brownish

Synonyms of Asbestos hedyphaneHide

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 Asbestos hedyphaneHide

Reference List:
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Sjögren H (1891) Adelit, ett basiskt arseniat från Nordmarken och Långban, Geologiska Föreningens i Stockholm Förhandlingar, 13: 781-789
Hansen, S. & O'Keeffe, M. (1988) Oriented intergrowth of an antigorite and an arsenate mineral from Långban, Sweden. A natural composite material. Acta Crystallographica B44:236-242
Holtstam, D. & Langhof, J. eds. (1999): Långban: The mines, their minerals, geology and explorers. Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, p. 127-128

Internet Links for Asbestos hedyphaneHide

Localities for Asbestos hedyphaneHide

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.
  • Värmland County
    • Filipstad
Holtstam, D. & Langhof, J. eds. (1999): Långban: The mines, their minerals, geology and explorers. Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, p. 127-128
Sjögren, H. (1891) Bidrag til Sveriges mineralogi. 3. Adelit, ett basiskt arseniat från Nordmarken och Långban. Geologiska Föreningen i Stockholm Förhandlingar: 13: 781-796.
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