UM1970-14-O:CrFeMgTiV
This page is currently not sponsored. Click here to sponsor this page.
Formula:
~(Mg,Fe)Ti3(V,Cr,Fe)2O10
Colour:
black
Lustre:
Adamantine, Metallic
Unique combination of elements.
Found in the area of a few m2 in albite fels within hydrothermal chalcopyrite-pyrite-pyrrhotite-carbonate ore at Bidjovagge, northern Norway. It is present as grains, 1-2 mm, surrounded by friable material. Octahedral outlines rarely observed, locally isotropic and homogenous. Associated with gadolinite, V-rutile (3.8% V2O5, 0.6% Cr2O3) ('vanadiorutile'), V,Cr-magnetite (16.98% V2O5, 15.06 Cr2O3) ('vanodiochrome spinel') and thortveitite.
Found in the area of a few m2 in albite fels within hydrothermal chalcopyrite-pyrite-pyrrhotite-carbonate ore at Bidjovagge, northern Norway. It is present as grains, 1-2 mm, surrounded by friable material. Octahedral outlines rarely observed, locally isotropic and homogenous. Associated with gadolinite, V-rutile (3.8% V2O5, 0.6% Cr2O3) ('vanadiorutile'), V,Cr-magnetite (16.98% V2O5, 15.06 Cr2O3) ('vanodiochrome spinel') and thortveitite.
Unique Identifiers
Mindat ID:
47201
Long-form identifier:
mindat:1:1:47201:8
Similar Names
| UM1985-06-O:CrFeMgTi | (Fe2+,Mg,Ti,Cr)6O7 |
Physical Properties of UM1970-14-O:CrFeMgTiV
Chemistry of UM1970-14-O:CrFeMgTiV
Mindat Formula:
~(Mg,Fe)Ti3(V,Cr,Fe)2O10
Element Weights:
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| TiO2 | 51.17 % |
| V2O5 | 13.15 % |
| Cr2O3 | 9.43 % |
| Fe2O3(tot) | 10.19 % |
| Al2O3 | 0.86 % |
| MgO | 0.26 % |
| CeO2 | 4.12 % |
| Sc2O3 | 2.89 % |
| Y2O3 | 0.36 % |
| Total: | 92.43 % |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Bidjovagge gold-copper deposit, Kautokeino, Troms og Finnmark, Norway | Electron microprobe, wt.%, isotropic material (separate chemical and spectrographic analyses and EPMA analyses of the anisotropic part also reported); additional elements reported in the chemical/spectrographic analyses: [%]: ZrO2 0.4, U 0.5-2, Pb 0.x, Sr 0.2, Cu 0.2, S 1.5 + trace Ni, Zn, Th; the anisotropic material is depleted in Ce but enriched in Si |
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.80 Å | (60) |
| 3.47 Å | (100) |
| 2.81 Å | (60) |
| 2.61 Å | (70) |
| 2.14 Å | (60) |
| 1.89 Å | (50) |
| 1.66 Å | (80) |
Comments:
the above data concerns the anisotropic (outer) material; data for the isotropic (core) material: 2.46 (40), 2.17 (70) and 1.69 (100)
Other Information
Thermal Behaviour:
[oC]: endothermal effects at 470 (sulfides?) and 690; exothermal effects at 900; sintering starting from 1000
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 UM1970-14-O:CrFeMgTiV
mindat.org URL:
https://www.mindat.org/min-47201.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for UM1970-14-O:CrFeMgTiV
Reference List:
Mathiesen, Carl O. (1970) An occurrence of unusual minerals at Bidjovagge, Northern Norway, in Årbok 1969. Norges Geologiske Undersøkelse 266, 86-104 (Abs. in: Fleischer, M. (1972): New mineral names. American Mineralogist: 57: 1003-1006)
Localities for UM1970-14-O:CrFeMgTiV
Showing 1 localities.
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 | |
| Mathiesen (1970) +1 other reference |
