Scandian Ixiolite (of Bergstøl & Juve)
A variety of Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
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About Scandian Ixiolite (of Bergstøl & Juve)
Formula:
~(Sc,Ta,Nb,Sn,Fe,Ti)4O8
Colour:
Black, with a weak brownish tint
Crystal System:
Orthorhombic
A variety of Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
A scandium-rich variety of ixiolite. The most Sc-rich samples are Sc-dominant (Bergstøl & Juve, 1988), and may be a new species.
See: http://www.mindat.org/mesg-7-72088.html.
A study of the refinement of the structure of scandian ixiolite from Heftetjern, Norway indicates that the structure is highly disordered and pseudo-orthorhombic, with a slight departure toward monoclinic symmetry (Wise et al. 1998; Raade & Kristiansen 2000).
A scandium-rich variety of ixiolite. The most Sc-rich samples are Sc-dominant (Bergstøl & Juve, 1988), and may be a new species.
See: http://www.mindat.org/mesg-7-72088.html.
A study of the refinement of the structure of scandian ixiolite from Heftetjern, Norway indicates that the structure is highly disordered and pseudo-orthorhombic, with a slight departure toward monoclinic symmetry (Wise et al. 1998; Raade & Kristiansen 2000).
Unique Identifiers
Mindat ID:
32092 (as Scandian Ixiolite (of Bergstøl & Juve))
2059 (as Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series)
2059 (as Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series)
Long-form identifier:
mindat:1:1:32092:8 (as Scandian Ixiolite (of Bergstøl & Juve))
mindat:1:1:2059:2 (as Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series)
mindat:1:1:2059:2 (as Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series)
GUID
(UUID V4):
(UUID V4):
03eb5181-bf6b-438d-a3ca-acd8bad8c1d3 (as Scandian Ixiolite (of Bergstøl & Juve))
1dada0f2-d659-4758-9b0e-8ddd431d9332 (as Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series)
1dada0f2-d659-4758-9b0e-8ddd431d9332 (as Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series)
Physical Properties of Scandian Ixiolite (of Bergstøl & Juve)
Colour:
Black, with a weak brownish tint
Fracture:
Conchoidal
Chemistry of Scandian Ixiolite (of Bergstøl & Juve)
Mindat Formula:
~(Sc,Ta,Nb,Sn,Fe,Ti)4O8
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| Ta2O5 | 48.00 % |
| Nb2O5 | 18.80 % |
| MnO | 2.40 % |
| FeO | 3.20 % |
| Sc2O3 | 18.80 % |
| Y2O3 | 0.10 % |
| TiO2 | 0.40 % |
| SnO2 | 7.30 % |
| Total: | 99 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | (Sc1.46Ta1.16Nb0.76Sn0.26Fe0.24Mn0.18Ti0.03)Σ4.09O8 |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway | With large areas altered to microlite. Electron Micro Probe analysis. Empirical formula, see also Raade & Kristiansen (2000) |
Crystallography of Scandian Ixiolite (of Bergstøl & Juve)
Crystal System:
Orthorhombic
Cell Parameters:
a = 5.711 Å, b = 4.763 Å, c = 5.152 Å
Ratio:
a:b:c = 1.199 : 1 : 1.082
Unit Cell V:
140.14 ų (Calculated from Unit Cell)
Morphology:
The outline of the crystals are often rectangular or even square.
Other Information
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 Scandian Ixiolite (of Bergstøl & Juve)
mindat.org URL:
https://www.mindat.org/min-32092.html
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References for Scandian Ixiolite (of Bergstøl & Juve)
Localities for Scandian Ixiolite (of Bergstøl & Juve)
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Norway | |
| Bergstøl et al. (1988) +1 other reference |
Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway