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(Nb,Fe)-substituted anatase

A variety of Anatase
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05284400017272473206712.jpg
(Nb,Fe)-substituted anatase

Herrebøkasa, Aspedammen, Idd, Halden, Østfold, Norway
05284400017272473206712.jpg
(Nb,Fe)-substituted anatase

Herrebøkasa, Aspedammen, Idd, Halden, Østfold, Norway
05284400017272473206712.jpg
(Nb,Fe)-substituted anatase

Herrebøkasa, Aspedammen, Idd, Halden, Østfold, Norway
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About (Nb,Fe)-substituted anataseHide

Formula:
(Ti0.5Nb0.25)Σ1.00O2
Colour:
Mustard yellow
Lustre:
Earthy
A fine-grained anatase forming pseudomorphs after euxenite-(Y) or polycrase-(Y) with a larger unit cell than normal anatase.

A chemical analysis of a (Nb,Fe)-substituted anatase was reported and discussed by Raade & Kristiansen (1997) from Herrebøkasa, Halden, Norway.


Unique IdentifiersHide

Mindat ID:
53494 (as (Nb,Fe)-substituted anatase)
213 (as Anatase)
Long-form identifier:
mindat:1:1:53494:7 (as (Nb,Fe)-substituted anatase)
mindat:1:1:213:8 (as Anatase)

Physical Properties of (Nb,Fe)-substituted anataseHide

Lustre:
Earthy
Colour:
Mustard yellow

Chemistry of (Nb,Fe)-substituted anataseHide

Mindat Formula:
(Ti0.5Nb0.25)Σ1.00O2
Elements listed:
Nb, O, Ti - search for minerals with similar chemistry

Chemical AnalysisHide

Oxide wt%:
 1
SiO20.88 %
TiO244.06 %
Fe2O318.96 %
Nb2O533.06 %
Ta2O51.61 %
Total:98.57 %
Empirical formulas:
Sample IDEmpirical Formula
1(Ti0.5Nb0.25)Σ1.00O2
Sample references:
IDLocalityReferenceNotes
1Herrebøkasa, Aspedammen, Idd, Halden, Østfold, Norway
Raade, Gunnar, Kristiansen, Roy (1997) (Nb,Fe)-substituted anatase from Herrebøkasa, Østfold, Norway, in Kongsberg Mineralsymposium 1997. STEIN. Nordisk magasin for populær geologi, 24 (3) 122-123
Electron microprobe

Other Language Names for (Nb,Fe)-substituted anataseHide

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.

Internet Links for (Nb,Fe)-substituted anataseHide

References for (Nb,Fe)-substituted anataseHide

Localities for (Nb,Fe)-substituted anataseHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Norway
 
  • Østfold
    • Halden
      • Idd
        • Aspedammen
Raade et al. (1997)
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