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Vredenburgite

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About VredenburgiteHide

Colour:
Black
Lustre:
Sub-Vitreous, Metallic, Sub-Metallic, Dull
Name:
Named in 1909 by Lewis Leigh Fermor in honor of Ernest Watson Vredenburg [April 17, 1870 Boyonne [Bayonne], France - March 12, 1923 London, England, United Kingdom], a geologist and marine biologist with the Geological Survey of India.
Shown to be oriented exsolution lamellae consisting of manganese-rich and/or zinc-rich oxide species. The original material from India consisted of hausmannite lamellae in jacobsite. Several mineral combinations of vredenburgite and vredenburgite-like exsolutions have been observed at Franklin, New Jersey, USA. Oriented exsolution lamellae of hetaerolite may occur in franklinite and are essentially the same mechanism of formation to the original combination: hausmannite in a spinel group mineral (jacobsite). At Franklin, there was an extension of the use of the term vredenburgite to include oriented exsolutions of manganosite in zincite. A homogeneous "metastable" material with a bulk composition similar to vredenburgite has been found at Langban, Sweden.


Physical Properties of VredenburgiteHide

Sub-Vitreous, Metallic, Sub-Metallic, Dull
Transparency:
Opaque
Colour:
Black
Tenacity:
Brittle
Fracture:
Irregular/Uneven, Sub-Conchoidal

Common AssociatesHide

Associated Minerals Based on Photo Data:
Albite6 photos of Vredenburgite associated with Albite on mindat.org.
Manganese Oxides6 photos of Vredenburgite associated with Manganese Oxides on mindat.org.
Muscovite5 photos of Vredenburgite associated with Muscovite on mindat.org.
Calcite4 photos of Vredenburgite associated with Calcite on mindat.org.

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 VredenburgiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mason, Brian (1946): Geologiska Forehnstock For handlingar, 68, p. 51.
S. P. Deshpande (1959): Ore-Microscopic Studies of the Manganese Ore-Minerals of Old M.P. I. Dongribuzurg, Bhandara District, Proceedings of the Indian Academy of Sciences, Section A, 49 (3), 165-173.
Roy, Subimal Sinha (1968): Vredenburgite from the Peroxide Manganese Ores of Dongri Buzurg, Mahahrashtra, India,Mineralogical Magazine 36, 1034-1036.

Internet Links for VredenburgiteHide

Localities for VredenburgiteHide

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.
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • La Negra-Coquimbana district
Pincheira, M., & Fontboté, L. (1990). La Negra-Coquimbana Manganiferous District, Southern Atacama Desert, Chile. In Stratabound Ore Deposits in the Andes (pp. 365-378). Springer, Berlin, Heidelberg.
Pincheira, M., & Fontboté, L. (1990). La Negra-Coquimbana Manganiferous District, Southern Atacama Desert, Chile. In Stratabound Ore Deposits in the Andes (pp. 365-378). Springer, Berlin, Heidelberg.
China
 
  • Sichuan Province
    • Mianyang Prefecture
      • Pingwu Co.
        • Mt Xuebaoding
          • Huya township
Pavel M. Kartashov analythical data of 2015, Jiangbin material
USA
 
  • New Jersey
    • Sussex Co.
      • Franklin mining district
Mason, Brian (1946), Geologiska Forehnstock For handlingar, v 68, p. 51.
Mineral and/or Locality  
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