Classification of Behoite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 4/F.01-20
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| Nickel-Strunz 10th (pending) edition ID: | 4.FA.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates) F : Hydroxides (without V or U) A : Hydroxides with OH, without H2O; corner-sharing tetrahedra |
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| Dana 8th edition ID: | 6.2.2.1
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL 2 : X(OH)2 |
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| Hey's CIM Ref.: | 7.4.2
7 : Oxides and Hydroxides 4 : Oxides of Be, Mg and the alkaline earths |
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| mindat.org URL: | http://www.mindat.org/min-603.html Please feel free to link to this page. |
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Type Occurrence of Behoite |
| Type Locality: | Rode Ranch pegmatite, Llano Co., Texas, USA |
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| Geological Setting of type material: | In granite pegmatite as a near-surface alteration product of gadolinite |
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| Associated Minerals at type locality: | |
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Occurrences of Behoite |
| Geological Setting: | In altered volcanic tuff; in pegmatite veins; in miarolitic cavities in nepheline syenite |
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Physical Properties of Behoite |
| Lustre: | Vitreous, Greasy, Dull |
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| Diaphaneity (Transparency): | Translucent, Opaque |
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| Colour: | Colourless or white, rarely pale pink to pale grey; may show anomalous blue and brown interference colours in transmitted light |
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| Hardness (Mohs): | 4 |
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| Fracture: | Conchoidal |
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| Density (measured): | 1.92 g/cm3 |
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| Density (calculated): | 1.93 g/cm3 |
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Crystallography of Behoite |
| Crystal System: | Orthorhombic |
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| Class (H-M): | 2 2 2 - Disphenoidal |
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| Space Group: | P21 21 21 |
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| Cell Parameters: | a = 4.62Å, b = 7.05Å, c = 4.55Å
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| Ratio: | a:b:c = 0.655 : 1 : 0.645 |
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| Unit Cell Volume: | V 148.20 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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| Morphology: | Crystals peudo-octahedral, {011} and {110}, or sphenoidal, to 7 mm; faces showing striae and etch pits; subhedral, as rounded crystal aggregates and crusts. |
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| Twinning: | Probably polysynthetically twinned, observed optically. |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 2.39 | | (vvs) | | 3.88 | | (vs) | | 3.83 | | (vs) | | 2.95 | | (m) | | 2.79 | | (m) | | 1.99 | | (m) |
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| Comments: | Recorded on type material |
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Optical Data of Behoite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.533 nβ = 1.544 nγ = 1.548 |
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| 2V: | Measured: 82° , Calculated: 60° |
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| Maximum Birefringence: | δ = 0.015
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Low |
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| Dispersion: | r < v, strong |
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Chemical Properties of Behoite |
| Formula: | |
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| Essential elements: | Be, H, O |
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| All elements listed in formula: | Be, H, O |
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| Analyical Data: | Emission spectroscopy shows Be as the only major element. |
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Relationship of Behoite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | |
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Other Names for Behoite |
| Synonyms: | |
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| German names: | |
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| Russian 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 Behoite |
| Reference List: | Ehlmann, A. J. and Mitchell, R. S. (1970): Behoite, beta-Be(OH)2, from the Rode Ranch pegmatite, Llano County, Texas. American Mineralogist 55, 1-9.
Horváth, L. and Gault, R. A. (1990): The mineralogy of Mont Saint-Hilaire, Quebec. Mineralogical Record 21, 284-359, esp. 220.
Zeitschrift für Anorganische und Allgemeine Chemie 624, 1130-1136.
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 50. |
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Internet Links for Behoite |
| Search Engines: |
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| External Links: | Look for Behoite on WebmineralLook for Behoite on Athena MineralogyLook for Behoite on WikipediaLook for Behoite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Behoite in the Natural History Museum (London) online catalogueBehoite details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | Wendel Minerals - Auktion & ShopHigh-end worldwide specimens & outstanding customer serviceFabre Minerals - search for Behoite specimensRare and Unusual minerals at Mineralogical Research CompanySearch for Behoite on minvision.come-Rocks - Mineral Auctions and SalesSearch for Behoite at Thames Valley MineralsWright's Rock Shop - excellent mineral specimens since 1970rare and unusual minerals mainly crystallizedMineral Classics - Worldwide Collector Quality Minerals and GemsThe Arkenstone - Fine MineralsLapis Mineral Magazin |
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Localities for Behoite |
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