Classification of Desautelsite |
| IMA status: | Approved 1978 |
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| Strunz 8th edition ID: | 5/E.03-40
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| Nickel-Strunz 10th (pending) edition ID: | 5.DA.50
5 : CARBONATES (NITRATES) D : Carbonates with additional anions, with H2O A : With medium-sized cations |
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| Dana 8th edition ID: | 16b.6.2.4
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN 6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1 |
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| Hey's CIM Ref.: | 11.12.3
11 : Carbonates 12 : Carbonates of Mn |
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| mindat.org URL: | http://www.mindat.org/min-1266.html Please feel free to link to this page. |
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Type Occurrence of Desautelsite |
| Type Locality: | Cedar Hill Quarry (Stoltzfuss Quarry), Fulton Township, Lancaster Co., Pennsylvania, USA |
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| Year of Discovery: | 1979 |
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Physical Properties of Desautelsite |
| Hardness (Mohs): | 2 |
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Crystallography of Desautelsite |
| Crystal System: | Trigonal |
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| Class (H-M): | 3m (3 2/m) - Hexagonal Scalenohedral |
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| Cell Parameters: | a = 3.114(1) Å, c = 23.39(2) Å
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| Ratio: | a:c = 1 : 7.511 |
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| Unit Cell Volume: | V 196.43 ų (Calculated from Unit Cell) |
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| Twinning: | By rotation about [0001], common. |
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| Comment: | SG R-3m or R3m; Z = 3/8 |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 7.76 | | (100) | | 3.88 | | (60) | | 2.622 | | (50) | | 2.332 | | (60) | | 1.981 | | (60) | | 1.768 | | (20) |
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| Comments: | Powder pattern indistinguishable from that of pyroaurite (Fe2+-analogue). |
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Optical Data of Desautelsite |
| Type: | Uniaxial (-) |
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| RI values: | nω = 1.569 nε = 1.547 |
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| Maximum Birefringence: | δ = 0.022
 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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Chemical Properties of Desautelsite |
| Formula: | |
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| Essential elements: | C, H, Mg, Mn, O |
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| All elements listed in formula: | C, H, Mg, Mn, O |
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Relationship of Desautelsite to other Species |
| Member of Group: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Related Minerals - Hey's Index Grouping:
- + | |
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Other Names for Desautelsite |
| 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 Desautelsite |
| Reference List: | Dunn, P.J., D.R. Peacor & T.D. Palmer (1979), Desautelsite, a new mineral of the pyroaurite group: American Mineralogist: 64: 127-130. |
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Internet Links for Desautelsite |
| Search Engines: |
Look for Desautelsite on Google
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| External Links: | Look for Desautelsite on WebmineralLook for Desautelsite on Athena MineralogyLook for Desautelsite on WikipediaLook for Desautelsite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Desautelsite in the Natural History Museum (London) online catalogueDesautelsite details from Handbook of Mineralogy (PDF) |
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| Jobs: | Mining & Geology Jobs |
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Localities for Desautelsite |
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality.
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