Where it forms, where it's found
- Geological setting
Weathering residue of a biotite pyroxene syenite in Yunan, China.
- Type locality
- Yunnan
- China
7recorded occurrences
Radioactivity
Physical
- Hardness
- 1Talc
- 2Gypsum
- 3Calcite
- 4Fluorite
- 5Apatite
- 6Orthoclase
- 7Quartz
- 8Topaz
- 9Corundum
- 10Diamond
- Transparency
- Translucent
- Colour
- Black
- Streak
- Dark brown to black
Crystallography
- Cell parameters
- a = 7.37 Å · b = 11.67 Å · c = 6.33 Å
- Ratio a:b:c
- 1 : 1.583 : 0.859
- Morphology
Prismatic crystals, to 1.2 cm.
- Comment
Cell obtained after heating completely metamict type material to 1000°C.
Chemical composition
Synonyms
- Orthobranneriet
- Orthobrannerita
In other languages
- German
- Orthobrannerit
- Italian
- Orthobrannerite · Ortobrannerite
Classification
Strunz
10th ed.4.DH.05
- 4OxidesClass
- 4.DMetal: Oxygen = 1:2 and similarDivision
- 4.DHWith large (+- medium-sized) cations; sheets of edge-sharing octahedraGroup
- 4.DH.05OrthobranneriteSpecies
Dana
8th ed.08.02.07.01
- 08Multiple Oxides Containing Niobium, Tantalum or TitaniumClass
- 08.02A2B2O6(O,OH,F)Type
- 08.02.07— unnamed intermediate level —Group
- 08.02.07.01OrthobranneriteSpecies
CIM
—7.16.19
- 7Oxides and HydroxidesClass
- 7.16Oxides of UGroup
- 7.16.19OrthobranneriteSpecies
Literature, links & citation
Citations
- 1978X-ray Laboratory, Peking Institute of Uranium Geology and Xray Laboratory, Wuhan Geological College (1978) Orthobrannerite - A new mineral of the brannerite group. Acta Geologica Sinica: 52(3): 241-251 (in Chinese with English abstract). http://rruff.info/rruff_1.0/uploads/AGS52_241.pdf
- 1978X-ray Laboratory, Peking Institute of Uranium Geology and Xray Laboratory, Wuhan Geological College (1978) Orthobrannerite - A new mineral of the brannerite group. Acta Geologica Sinica: 52(3): 241-251.
- 1979Fleischer, Michael, Chao, George Y., Mandarino, J. A. (1979) New mineral names. American Mineralogist, 64 (5-6) 652-659
- 2005(2005) Orthobrannerite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
Entry last updated
@misc{mineral2025,
author = {Mineral Index editorial board},
title = {Orthobrannerite — Mineral Index},
year = {2025},
url = {https://mineralindex.org/minerals/orthobrannerite-3023}
}