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Knopite

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Formula:
(Ca,Ce,Na)(Ti,Fe)O
 
3
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.

Classification of Knopite

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Chemical Properties of Knopite

Formula:
(Ca,Ce,Na)(Ti,Fe)O
 
3
Simplified for copy/paste:(Ca,Ce,Na)(Ti,Fe)O3
Essential elements:Ca, O, Ti
All elements listed in formula:Ca, Ce, Fe, Na, O, Ti

Other Names for Knopite

Other Languages:
German:Knopit
Spanish:Knopita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Knopite

Reference List:

- +
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 Knopite

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  • Knopite specimens for sale - minfind.com
  • Localities for Knopite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Canada
     
    • British Columbia
      • Golden Mining Division
        • Ice River Alkaline Complex
    Ellsworth, H. V., and Walker, J. F., Knopite and magnetite occurrence, Moose Creek, southeastern British Columtria: Canoda Geol. Survey, Summary Rept., Pt. A, 1925
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Afrikanda
    [World of Stones 95:5-6, 64]
    Sweden
     
    • Medelpad
      • Sundsvall
        • Alnö
    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
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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