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Coal blend

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About Coal blendHide

Colour:
Jet-black
Lustre:
Vitreous
Hardness:
2 - 3
Crystal System:
Amorphous
Coal blend, in Norwegian, kullblende, is a complex of carbon-hydrogen-compounds with traces of nitrogen and sulphur. Probably a variety of Pyrobitumen.

The name is used since Schumacher (1801) as a designation for an "anthracite"-like mineraloid of hydrothermal origin that occurs in the Kongsberg Silver Mines in Norway, and closeby, near and inside the Oslo Region (a graben area) in Precambrian, Cambro-Silurian and Permian rocks.

Composition in weight per cent:
C 95-80, O 6-2, H 3-1, N 0.7-0.2. S 0.4 and ashes 4-0.1 (Dons 1956).




Physical Properties of Coal blendHide

Vitreous
Colour:
Jet-black
Streak:
Black
Hardness:
2 - 3 on Mohs scale
Comment:
Fracture surfaces give the idea of ~5
Tenacity:
Brittle
Fracture:
Conchoidal

Crystallography of Coal blendHide

Crystal System:
Amorphous

Other Language Names for Coal blendHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Coal blend associated with QuartzSiO2
1 photo of Coal blend associated with CalciteCaCO3
1 photo of Coal blend associated with CopperCu
1 photo of Coal blend associated with LaumontiteCaAl2Si4O12 · 4H2O

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 Coal blendHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schumacher, C.F (1801): Versuch eines Verzeichnisses der in den Dänisch-Nordischen Staaten sich findenden einfachen Mineralien. Kopenhagen, 172 pp.
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265.
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67.
Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68, 278 pp. (p. 245-246)

Internet Links for Coal blendHide

Localities for Coal blendHide

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
 
  • Akershus
    • Asker
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67
    • Bærum (Baerum)
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
    • Nesodden
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67
  • Aust-Agder
    • Arendal
      • Flosta Island
Helland, A. (1875): Bergbeg, Anthracit og nogle andre kulholdige Mineralier fra Ertsleiesteder og Granitgange. Geologiska Föreningen i Stockholm Förhandlingar. 2, 513-522.; Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265; Dons, J. (1956) Coal Blend and Uraniferous Hydrocarbon in Norway. Norsk Geologisk Tidsskrift, 36: 249-256
      • Stokken
Dons, J. (1956) Coal Blend and Uraniferous Hydrocarbon in Norway. Norsk Geologisk Tidsskrift, 36: 249-256
  • Buskerud
    • Hol
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
    • Hole
      • Sollihøgda
Knut Eldjarn collection
    • Hurum
      • Mølen Island
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
    • Kongsberg
      • Kjennerudvannet
Norges Geologiske Undersøkelse. Malmdatabasen. Forekomstområde 604 - 002. Rud.[30.aug.2010]
Norges Geologiske Undersøkelse. Malmdatabasen. Forekomstområde 604 - 003. Rud. [30.aug.2010]
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
    • Lier
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67
    • Modum
      • Åmot
Dons, J. (1956) Coal Blend and Uraniferous Hydrocarbon in Norway. Norsk Geologisk Tidsskrift, 36: 249-256
    • Nes
Per Lid Adamsen collection 2010
      • Svenkerud
Garmo, T.T. & Selbekk, R. (2017): Norsk mineralbok. Fossheim Steinsenter, Lom. 351p. (p.206)
    • Øvre Eiker
      • Himsjø
Øivind Thoresen collection
Geological Survey of Norway (NGU). The Ore database (Malmdatabasen). Deposit Area 624 - 053.
      • Kjennerudvannet
Knut Edvard Larsen collection # MM-3130
  • Hedmark
    • Grue
O.T. Ljøstad photo & specimen
    • Hamar
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
    • Stange
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
  • Telemark
    • Bamble
      • Askeklova
Larsen, K.E. (2016): Noen funn av mineraler i Norge 2015-2016. Norsk Mineralsymposium 2016: 127-135
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
  • Vestfold
    • Horten
      • Borre
        • Løvøya
Larsen, K. E. & Larsen, S. (2005): Mineralforekomster på Vestfold lavaplatå. Del 2: I B1-nivåets basalter. Norsk Bergverksmuseum skrift 30, 41-57
    • Re
Dons, J.A. (1956): Coal Blend and uraniferous hydrocarbon in Norway. Norsk Geologisk Tidsskrift.36, 247-265
 
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