Oxybiotite
A variety of Biotite
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Formula:
K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
An oxidized biotite which depleted in hydrogen and enriched in ferric iron (Ohta et al., 1982).
Name not mentioned in the mica report.
Name not mentioned in the mica report.
Unique Identifiers
Mindat ID:
29218 (as Oxybiotite)
677 (as Biotite)
677 (as Biotite)
Long-form identifier:
mindat:1:1:29218:4 (as Oxybiotite)
mindat:1:1:677:2 (as Biotite)
mindat:1:1:677:2 (as Biotite)
IMA Classification of Oxybiotite
Discredited
Approval history:
Discredited by IMA in 2006 (IMA 06–C) = oxidized biotite (?), cf. Burke (2006).
Chemistry of Oxybiotite
Mindat Formula:
K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Element Weights:
Common Associates
Associations Based on Photo Data:
| 1 photo of Oxybiotite associated with Synchysite Group | |
| 1 photo of Oxybiotite associated with Bastnäsite Group | M(CO3)X where M = REE, Th and X = F or OH |
| 1 photo of Oxybiotite associated with Arfvedsonite | NaNa2(Fe2+4Fe3+)Si8O22(OH)2 |
| 1 photo of Oxybiotite associated with Albite | Na(AlSi3O8) |
| 1 photo of Oxybiotite associated with Microcline | K(AlSi3O8) |
Radioactivity
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 Oxybiotite
mindat.org URL:
https://www.mindat.org/min-29218.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Oxybiotite
Reference List:
Hey, M. H., Embrey, P. G. (1972) Twenty-seventh list of new mineral
names. Mineralogical Magazine, 38 (300) 987-1001 doi:10.1180/minmag.1972.038.300.19
Gilkes, R. J. (1973) The Alteration Products of Potassium Depleted Oxybiotite. Clays and Clay Minerals, 21 (5) 303-313 doi:10.1346/ccmn.1973.0210506
Takeda, Hiroshi, Ross, Malcolm (1975) Mica polytypism: Dissimilarities in the crystal structures of coexisting 1M and 2M1 biotite. American Mineralogist, 60 (11-12) 1030-1040
Ohta, T.; Takeda, H.; Takéuchi, Y. (1982) Mica polytypism: similarities in the crystal structures of coexisting 1M and 2M1 oxybiotite. American Mineralogist, 67 (3-4). 298-310
Kogure, Toshihiro, Nespolo, Massimo (1999) A TEM study of long-period mica polytypes: determination of the stacking sequence of oxybiotite by means of atomic resolution images and Periodic Intensity Distribution (PID) Acta Crystallographica Section B Structural Science, 55 (4) 507-516 doi:10.1107/s0108768199003845
Localities for Oxybiotite
Showing 2 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.
South Korea | |
| Atsuo Harumoto (1970) |
USA | |
| King (n.d.) |
