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Knopite

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About KnopiteHide

Formula:
(Ca,Ce,Na)(Ti,Fe)O3
Name:
After A. Knop (1828-1893), German mineralogist who discovered the niobian variety of perovskite ('dysanalyte').
A variety of Perovskite

A variety of perovskite rich in cerium.
Originally described from Långörsholmen, Alnö, Sundsvall, Medelpad, Sweden.


Chemical Properties of KnopiteHide

Formula:
(Ca,Ce,Na)(Ti,Fe)O3

Other Language Names for KnopiteHide

German:Knopit
Spanish:Knopita

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Knopite associated with CafetiteCaTi2O5 · H2O

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 KnopiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Holmquist, P.J. (1894): Knopit, ett perowskit närstående, et nytt mineral från Alnön. Geologiska Föreningen i Stockholm Förhandlingar. 16 : 73-95.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 730.

Internet Links for KnopiteHide

Localities for KnopiteHide

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.
Canada
 
  • British Columbia
    • Golden Mining Division
      • Ice River Alkaline Complex
Ellsworth, H. V., and Walker, J. F. (1925) Knopite and magnetite occurrence, Moose Creek, southeastern British Columbia. Canadian Geological Survey, Summary Report, Pt. A.
Russia
 
  • Murmansk Oblast
[World of Stones 95:5-6, 64]
Arzamastsev, A. A., Bea, F., Arzamastseva, L. V., & Montero, P. (2006). Proterozoic Gremyakha-Vyrmes Polyphase Massif, Kola Peninsula: An example of mixing basic and alkaline mantle melts. Petrology, 14(4), 361-389.
  • Republic of Karelia
    • Loukhsky District
Bea, F., Arzamastsev, A., Montero, P., & Arzamastseva, L. (2001). Anomalous alkaline rocks of Soustov, Kola: evidence of mantle-derived metasomatic fluids affecting crustal materials. Contributions to Mineralogy and Petrology, 140(5), 554-566.
Sweden
 
  • Västernorrland County
    • Sundsvall
      • Alnö Complex
Holmquist, P.J. (1894): Knopit, ett perowskit närstående, et nytt mineral från Alnön. Geologiska Föreningen i Stockholm Förhandlingar. 16 : 73-95; Clark, 1993 - "Hey's Mineral Index", 365
    • Timrå
 
Mineral and/or Locality  
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