UM1987-04-O:Ti
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Formula:
TiO1.71-1.83
also reported as TinO2n-1 (n is between 4 and 9); some representatives may be Ti6O11 and Ti9O17
Colour:
blue, grayish-blue, light blue
Crystal System:
Triclinic
Probably not a single mineral species. May be related to the Magnéli phases. Interesting due to probable high content of trivalent titanium, indicated by high chemical analysis summation if Ti is calculated wholly as TiO2.
Found in mudstone xenoliths among native (terrestrial) iron of a strongly reduced andesite breccia. Vitrinite and inertinite occur in this xenolith. Associated minerals include some Al-Ti oxides.
These natural Magnéli phases constitute cores of zoned grains, and are also found as aggregates of prismatic or irregular grains. Their structure is derived from that of rutile.
Found in mudstone xenoliths among native (terrestrial) iron of a strongly reduced andesite breccia. Vitrinite and inertinite occur in this xenolith. Associated minerals include some Al-Ti oxides.
These natural Magnéli phases constitute cores of zoned grains, and are also found as aggregates of prismatic or irregular grains. Their structure is derived from that of rutile.
Unique Identifiers
Mindat ID:
51166
Long-form identifier:
mindat:1:1:51166:3
Similar Names
| Ammite | A synonym of Ooid-limestone | |
| UM1986-25-P:Ti | TiP | |
| UM1991-08-O:Ti | TiO2 | |
| UM2000-21-E:Ti | Ti | |
| UM2000-41-O:Ti (TiO2-II) | TiO2 | |
| UM2007-16-N:Ti | Ti7N3 | |
| UM2007-31-S:Ti | Ti7S3 | |
| Umbite | A valid IMA mineral species | K2(Zr,Ti)Si3O9 · H2O |
| Umite | A synonym of Humite |
Physical Properties of UM1987-04-O:Ti
Colour:
Blue, grayish-blue, light blue
Optical Data of UM1987-04-O:Ti
Anisotropism:
strong
Chemistry of UM1987-04-O:Ti
Mindat Formula:
TiO1.71-1.83
also reported as TinO2n-1 (n is between 4 and 9); some representatives may be Ti6O11 and Ti9O17
also reported as TinO2n-1 (n is between 4 and 9); some representatives may be Ti6O11 and Ti9O17
Elements listed:
Crystallography of UM1987-04-O:Ti
Crystal System:
Triclinic
Twinning:
always present, lamellar
Comment:
Concerns the synthetic species
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 UM1987-04-O:Ti
mindat.org URL:
https://www.mindat.org/min-51166.html
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References for UM1987-04-O:Ti
Reference List:
Pedersen, A. K., Rønsbo, J. G. (1987) Oxygen deficient Ti oxides (natural Magnéli phases) from mudstone xenoliths with native iron from Disko, central West Greenland. Contributions to Mineralogy and Petrology, 96 (1). 35-46 doi:10.1007/bf00375523Abs. in: Jambor, J.L., Burke, E.A.J. (1990): New mineral Names. American Mineralogist: 75: 1434
Localities for UM1987-04-O:Ti
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.
Greenland | |
| Pedersen et al. (1987) +1 other reference |
