Classification of Gottlobite |
| IMA status: | Approved 1998 |
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| Strunz 8th edition ID: | 7/B.26-15
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| Nickel-Strunz 10th (pending) edition ID: | 8.BH.35
8 : PHOSPHATES, ARSENATES, VANADATES B : Phosphates, etc., with additional anions, without H2O H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1 |
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| mindat.org URL: | http://www.mindat.org/min-7069.html Please feel free to link to this page. |
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Type Occurrence of Gottlobite |
| Type Locality: | Glücksstern Mine, Gottlob Hill, Friedrichroda, Thuringian Forest, Thuringia, Germany |
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Physical Properties of Gottlobite |
| Lustre: | Adamantine, Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | Orange to orange-brown |
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| Streak: | brownish white |
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| Hardness (Mohs): | 4½ |
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| Cleavage: | None Observed |
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| Fracture: | Irregular/Uneven, Conchoidal |
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| Density (calculated): | 3.46 g/cm3 |
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| Comment: | 3.41 and 3.58 for highest and lowest V content |
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Crystallography of Gottlobite |
| 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 = 7.501Å, b = 9.01Å, c = 5.941Å
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| Ratio: | a:b:c = 0.833 : 1 : 0.659 |
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| Unit Cell Volume: | V 401.5 ų |
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| Z: | 4 |
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Optical Data of Gottlobite |
| Type: | Biaxial |
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| RI values: | nα = 1.797 nβ = 1.805 - 1.815 nγ = 1.828 |
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| 2V: | Calculated: 62° to 80° |
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| Maximum Birefringence: | δ = 0.031
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Very High |
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| Dispersion: | r > v medium |
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Chemical Properties of Gottlobite |
| Formula: | |
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| Idealised Formula: | |
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| Essential elements: | Ca, H, Mg, O, V |
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| All elements listed in formula: | As, Ca, H, Mg, O, V |
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Relationship of Gottlobite to other Species |
| Series: | Forms a series with Adelite (see here) |
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| Member of Group: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Gottlobite |
| Synonyms: | |
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| Other Languages: | |
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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 Gottlobite |
| Reference List: | T. Witzke, M. Steins, T. Doering and U. Kolitsch (2000): Gottlobite, CaMg(VO4,AsO4)(OH), a new mineral from Friedrichroda, Thuringia, Germany. N. Jb. Mineral. Mh. 2000, 444-454.
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Internet Links for Gottlobite |
| Search Engines: |
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| External Links: | Look for Gottlobite on WebmineralLook for Gottlobite on Athena MineralogyLook for Gottlobite on WikipediaLook for Gottlobite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Gottlobite in the Natural History Museum (London) online catalogue |
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Localities for Gottlobite |