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⇱ Knopite: Mineral information, data and localities.

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Knopite

A variety of Perovskite
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About KnopiteHide

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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 rich in cerium.
Originally described from Långörsholmen, Alnö, Sundsvall, Medelpad, Sweden.


Unique IdentifiersHide

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Mindat ID:
2228 (as Knopite)
3166 (as Perovskite)
Long-form identifier:
mindat:1:1:2228:2 (as Knopite)
mindat:1:1:3166:6 (as Perovskite)

Similar NamesHide

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Chemistry of KnopiteHide

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Mindat Formula:
(Ca,Ce,Na)(Ti,Fe)O3
Element Weights:
Element% weight
O35.308 %
Ti35.211 %
Ca29.481 %

Calculated from ideal end-member formula.

Other Language Names for KnopiteHide

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German:Knopit
Spanish:Knopita

Common AssociatesHide

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Associated Minerals Based on Photo Data:
2 photos of Knopite associated with PerovskiteCaTiO3
1 photo of Knopite associated with CalciteCaCO3
1 photo of Knopite associated with Magnesio-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2
1 photo of Knopite associated with MagnetiteFe2+Fe3+2O4
1 photo of Knopite associated with SchorlomiteCa3Ti2(SiO4)(Fe3+O4)2
1 photo of Knopite associated with TitaniteCaTi(SiO4)O
1 photo of Knopite associated with CafetiteCaTi2O5 · H2O

Other InformationHide

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

Internet Links for KnopiteHide

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mindat.org URL:
https://www.mindat.org/min-2228.html
Please feel free to link to this page.

References for KnopiteHide

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Localities for KnopiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Canada
  • British Columbia
    • Golden Mining Division
      • Ice River Alkaline Complex
Ellsworth et al. (1925)
Greenland
  • Sermersooq
Aðalsteinsdóttir et al. (2025)
Russia
  • Murmansk Oblast
World of Stones 95: 5-6
Arzamastsev et al. (2006)
  • Republic of Karelia
    • Loukhsky District
Bea et al. (2001)
Sweden
  • Västernorrland County
    • Sundsvall
      • Alnö Complex
Holmquist (1894) +1 other reference
    • Timrå
Quick NavTopAbout KnopiteUnique IdentifiersSimilar NamesChemistry Other LanguagesCommon AssociatesOther InformationInternet Links References Localities Locality List
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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