Classification of Bauranoite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 4/H.06-30
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| Nickel-Strunz 10th (pending) edition ID: | 4.GB.20
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates) G : Uranyl Hydroxides B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra |
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| Dana 8th edition ID: | 5.4.2.2
5 : OXIDES CONTAINING URANIUM OR THORIUM 4 : AX2O7·xH2O |
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| Hey's CIM Ref.: | 7.16.16
7 : Oxides and Hydroxides 16 : Oxides of U |
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| mindat.org URL: | http://www.mindat.org/min-574.html Please feel free to link to this page. |
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Type Occurrence of Bauranoite |
| Type Locality: | Oktyabr'skoye Mo-U Deposit, Strel'tsovskoye ore field, Krasnokamensk, Chitinskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia |
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| General Appearance of Type Material: | Dense, fine-grained aggregates |
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| Geological Setting of type material: | In the oxidation zone of a U-Mo deposit, replacing pitchblende and replaced by uranophane |
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| Associated Minerals at type locality: | |
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Physical Properties of Bauranoite |
| Diaphaneity (Transparency): | Translucent |
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| Colour: | Reddish brown |
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| Hardness (Mohs): | 5 |
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| Hardness (Vickers): | VHN100=372 - 380 kg/mm2 |
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| Density (measured): | 5.283 - 5.42 g/cm3 |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 3.09 | | (10) | | 3.41 | | (7) | | 1.98 | | (6) | | 1.948 | | (6) | | 1.908 | | (6) | | 1.723 | | (6) |
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| Comments: | From type description. |
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Optical Data of Bauranoite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.911 - 1.916 nγ = 1.920 - 1.932 |
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| 2V: | Measured: 81° |
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| Maximum Birefringence: | δ = 0.009 - 0.016
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Dispersion: | r < v |
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Chemical Properties of Bauranoite |
| Formula: | |
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| Essential elements: | Ba, H, O, U |
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| All elements listed in formula: | Ba, H, O, U |
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| Analyical Data: | Chemical analysis of material from the type locality
UO3 (63.74)
SiO2 (0.48)
PbO (0.53)
CaO (2.62)
BaO (21.21)
H2O (8.24)
CO2 (3.20)
sum 100.02 wt.-% |
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| Empirical Formula: | |
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| Common Impurities: | Ca,Pb,Si |
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Relationship of Bauranoite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | | 7.16.1 | Uraninite | | | 7.16.2 | Schoepite | | | 7.16.3 | Paraschoepite | | | 7.16.4 | Metaschoepite | | | 7.16.5 | Metastudtite | | | 7.16.6 | Studtite | | | 7.16.7 | Ianthinite | | | 7.16.8 | Compreignacite | | | 7.16.9 | Vandenbrandeite | | | 7.16.10 | Roubaultite | | | 7.16.11 | Becquerelite | | | 7.16.12 | Rameauite | | | 7.16.13 | Agrinierite | | | 7.16.14 | Protasite | | | 7.16.15 | Billietite | | | 7.16.17 | Metacalciouranoite | | | 7.16.18 | Calciouranoite | | | 7.16.19 | Orthobrannerite | | | 7.16.20 | Thorutite | | | 7.16.21 | Davidite-(La) | | (La,Ce)(Y,U,Fe)(Ti,Fe) | | (O,OH) | | |
| | 7.16.22 | Davidite-(Ce) | | (Ce,La)(Y,U,Fe)(Ti,Fe) | | (O,OH) | | |
| | 7.16.23 | Brannerite | | | 7.16.24 | Fourmarierite | | | 7.16.25 | Richetite | | | 7.16.26 | Curite | | | 7.16.27 | Masuyite | | | 7.16.28 | Vandendriesscheite | | | 7.16.29 | Metavandendriesscheite | | | 7.16.30 | Sayrite | | | 7.16.31 | Wölsendorfite | | | 7.16.32 | Clarkeite | | | 7.16.33 | Uranosphaerite | |
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Other Names for Bauranoite |
| Synonyms: | |
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| German names: | |
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| Spanish names: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Bauranoite |
| Reference List: | Rogova, V. P., Belova, L. N., Kiziyarov, G. N. and Kuznetsova, N. N. (1973): Bauranoite and metacaltsuranoite [metacalciouranoite] - new minerals of the group of hydrous uranium oxides. Zap. Vses. Mineral. Obshch. 102, 75-81 (in Russian). - American Mineralogist (1973), 58, 1111 (abstract).
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 46. |
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Internet Links for Bauranoite |
| Search Engines: |
Look for Bauranoite on Google
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| External Links: | Look for Bauranoite on WebmineralLook for Bauranoite on Athena MineralogyLook for Bauranoite on WikipediaLook for Bauranoite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Bauranoite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | Wendel Minerals - Auktion & ShopSearch for Bauranoite on minvision.comMineral Classics - Worldwide Collector Quality Minerals and Gemse-Rocks - Mineral Auctions and SalesSearch for Bauranoite at Thames Valley Mineralsrare and unusual minerals mainly crystallizedFabre Minerals - search for Bauranoite specimensFind Bauranoite on www.crystalclassics.co.ukLapis Mineral MagazinRare and Unusual minerals at Mineralogical Research CompanyTop quality minerals from Kristalle of CaliforniaWilensky Fine Minerals |
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Localities for Bauranoite |