Dussertite
A valid IMA mineral species - grandfathered
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About Dussertite
Desiré Dussert
Formula:
BaFe3+3(AsO4)(AsO3OH)(OH)6
Colour:
Green, yellow-green, bluish green; yellowish green in transmitted light.
Hardness:
3½
Specific Gravity:
3.75
Crystal System:
Trigonal
Member of:
Name:
Named in 1925 by Jules Barthoux in honor of Jean Baptiste Desiré Dussert (1872-1928), French mining engineer who worked in Algeria and General Inspector of Mines.
A secondary mineral and frequently an alteration product of arsenopyrite.
Some dussertite contains Sb replacing Fe (Kolitsch et al., 1999).
Closely related to the Unnamed (Fe-analogue of Weilerite and Ba-analogue of Oberwolfachite).
Some dussertite contains Sb replacing Fe (Kolitsch et al., 1999).
Closely related to the Unnamed (Fe-analogue of Weilerite and Ba-analogue of Oberwolfachite).
Unique Identifiers
Mindat ID:
1334
Long-form identifier:
mindat:1:1:1334:1
IMA Classification of Dussertite
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Redefined by the IMA
IMA Formula:
BaFe3+3(As5+O4)(As5+O3OH)(OH)6
First published:
1925
Approval history:
Redefined 1999 s.p.: Kolitsch et al. (1999).
Classification of Dussertite
8.BL.10
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
41.5.10.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
20.9.13
20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe
20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Dst | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Dussertite
Transparency:
Translucent
Colour:
Green, yellow-green, bluish green; yellowish green in transmitted light.
Hardness:
3½ on Mohs scale
Density:
3.75 g/cm3 (Measured) 4.09 g/cm3 (Calculated)
Optical Data of Dussertite
Type:
Uniaxial (-)
RI values:
nω = 1.87 nε = 1.845 n = 1.85
2V:
Measured: 15° to 20°
Max. Birefringence:
δ = 0.025
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High
Pleochroism:
Visible
Comments:
Shades of greenish yellow.
Comments:
May be anomalously biaxial at times with 2V = 15° to 20°.
Chemistry of Dussertite
Mindat Formula:
BaFe3+3(AsO4)(AsO3OH)(OH)6
Element Weights:
Crystallography of Dussertite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Cell Parameters:
a = 7.4244 Å, c = 17.494 Å
Ratio:
a:c = 1 : 2.356
Unit Cell V:
835.11 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Crystals minute, flattened {0001}, aggregated into crusts or rosette-like groups.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014536 | Dussertite | Kolitsch U, Slade P G, Tiekink E R T, Pring A (1999) The structure of antimonian dussertite and the role of antimony in oxysalt minerals Mineralogical Magazine 63 17-26 |  | 1999 | Clara mine, Black Forest, Germany | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.07 Å | (70) |
| 3.72 Å | (60) |
| 3.13 Å | (100) |
| 2.58 Å | (30) |
| 2.325 Å | (50) |
| 2.00 Å | (60) |
| 1.850 Å | (60) |
| 1.560 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 48 : Soil leaching zone minerals | <0.6 |
Geological Setting:
Oxidized zones of base-metal deposits as alteration product of arsenopyrite.
Type Occurrence of Dussertite
Place of Conservation of Type Material:
Muséum Nationale d’Histoire Naturelle, Paris, France, numbers 124.382, 124.389 (type).
Ecole Nationale Supérieure des Mines, Paris, France, number 14143 (type).
Ecole Nationale Supérieure des Mines, Paris, France, number 14143 (type).
Associated Minerals at Type Locality:
Other Language Names for Dussertite
Relationship of Dussertite to other Species
Member of:
Other Members of Dussertite Group:
| Arsenocrandallite | CaAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) |
| Arsenoflorencite-(Ce) | CeAl3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Arsenoflorencite-(La) | LaAl3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| 'Arsenoflorencite-(Nd)' | NdAl3(AsO4)2(OH)6 | Trig. |
| Arsenogorceixite | BaAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
| Arsenogoyazite | SrAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
| 'Arsenowaylandite' | BiAl3(AsO4)2(OH)6 | Trig. |
| Graulichite-(Ce) | CeFe3+3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Graulichite-(La) | LaFe3+3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Karlseifertite | Pb(Ga2Ge)(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Philipsbornite | PbAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
| Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
Common Associates
Associations Based on Photo Data:
| 9 photos of Dussertite associated with Arseniosiderite | Ca2Fe3+3(AsO4)3O2 · 3H2O |
| 9 photos of Dussertite associated with Bariopharmacosiderite | Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
| 8 photos of Dussertite associated with Quartz | SiO2 |
| 6 photos of Dussertite associated with Baryte | BaSO4 |
| 6 photos of Dussertite associated with Hematite | Fe2O3 |
| 5 photos of Dussertite associated with 'Stink-Fluss' | CaF2 |
| 5 photos of Dussertite associated with Chenevixite | Cu2Fe3+2(AsO4)2(OH)4 |
| 3 photos of Dussertite associated with Scorodite | Fe3+AsO4 · 2H2O |
| 3 photos of Dussertite associated with Goethite | Fe3+O(OH) |
| 2 photos of Dussertite associated with Native Silver | Ag |
Related Minerals - Strunz-mindat Grouping
| 8.BL. | Kiryuite | NaMnAl(PO4)F3 |
| 8.BL. | Metaheimite | PbCu2(AsO4)(OH)3 |
| 8.BL. | Graulichite-(La) | LaFe3+3(AsO4)2(OH)6 |
| 8.BL. | Cloudite | BaFe3+3(PO4)(SO4)(OH)6 |
| 8.BL. | Oberwolfachite | SrFe3+3(AsO4)(SO4)(OH)6 |
| 8.BL. | Arsenobenauite | SrFe3+3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.05 | Gallobeudantite | PbGa3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Slottaite | SrFe3+3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Corkite | PbFe3+3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Hidalgoite | PbAl3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
| 8.BL.05 | 'UM2011-07-POSO:AlBaH' | BaAl3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Kemmlitzite | SrAl3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Beudantite | PbFe3+3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Weilerite | BaAl3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| 8.BL.10 | Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 |
| 8.BL.10 | Arsenogoyazite | SrAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Arsenogorceixite | BaAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Galloplumbogummite | Pb(Ga,Al,Ge)3(PO4)2(OH)6 |
| 8.BL.10 | Stibiosegnitite | Pb(Fe3+2.5Sb5+0.5)(AsO4)2(OH)6 |
| 8.BL.10 va | 'Viséite' | |
| 8.BL.10 | Arsenocrandallite | CaAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Benauite | SrFe3+3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Philipsbornite | PbAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Springcreekite | BaV3+3(PO4)2(OH,H2O)6 |
| 8.BL.10 | Eylettersite | Th0.75Al3(PO4)2(OH)6 |
| 8.BL.10 | Kintoreite | PbFe3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Plumbogummite | PbAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Goyazite | SrAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.13 | Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
| 8.BL.13 | Florencite-(La) | LaAl3(PO4)2(OH)6 |
| 8.BL.13 | Florencite-(Nd) | NdAl3(PO4)2(OH)6 |
| 8.BL.13 | Zaïrite | BiFe3+3(PO4)2(OH)6 |
| 8.BL.13 | Arsenoflorencite-(La) | LaAl3(AsO4)2(OH)6 |
| 8.BL.13 | 'Arsenoflorencite-(Nd)' | NdAl3(AsO4)2(OH)6 |
| 8.BL.13 | 'Unnamed (As-analogue of Zaïrite)' | (Bi,Pb)Fe3+3(AsO4)2(OH)6 |
| 8.BL.13 | Arsenoflorencite-(Ce) | CeAl3(AsO4)2(OH)6 |
| 8.BL.13 | Graulichite-(Ce) | CeFe3+3(AsO4)2(OH)6 |
| 8.BL.13 | 'Arsenowaylandite' | BiAl3(AsO4)2(OH)6 |
| 8.BL.13 | Waylandite | BiAl3(PO4)2(OH)6 |
| 8.BL.13 | Florencite-(Sm) | SmAl3(PO4)2(OH)6 |
| 8.BL.15 | Viitaniemiite | Na(Ca,Mn2+)Al(PO4)(F,OH)3 |
| 8.BL.25 | Pattersonite | PbFe3+3(PO4)2(OH)5 · H2O |
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 Dussertite
mindat.org URL:
https://www.mindat.org/min-1334.html
Please feel free to link to this page.
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References for Dussertite
Reference List:
Larsen, E.S.; Berman, H. (1934) The microscopic determination of the nonopaque minerals. Bulletin of the US Geological Survey Vol. 848. US Geological Survey p.1-266. doi:10.3133/b848 p.91
Foshag, W. F. (1937) Carminite and associated minerals from Mapimi, Mexico. American Mineralogist, 22 (5) 479-484
McConnell, D. (1942) X-ray data on several phosphate minerals. American Journal of Science, 240 (9) 649-657 doi:10.2475/ajs.240.9.649
Walenta, Kurt, Walenta, Kurt (1966) Beiträge zur Kenntnis seltener Arsenatmineralien unter besonderer Berücksichtigung von Vorkommen des Schwarzwaldes. 3. Folge (Schluß). [Rare arsenate minerals with special consideration of occurrences in the Black Forest. Part III (end)]. Tschermaks Mineralogische und Petrographische Mitteilungen, 11 (1). 121-164 doi:10.1007/bf01127708
Jambor, John L. (1999) Nomenclature of the alunite supergroup. The Canadian Mineralogist, 37 (6). 1323-1341
Kolitsch, U., Slade, P. G., Tiekink, E. R. T., Pring, A. (1999) The structure of antimonian dussertite and the role of antimony in oxysalt
minerals. Mineralogical Magazine, 63 (1) 17-26 doi:10.1180/002646199548277
Bayliss, P., Kolitsch, U., Nickel, E. H., Pring, A. (2010) Alunite supergroup: recommended nomenclature. Mineralogical Magazine, 74 (5) 919-927 doi:10.1180/minmag.2010.074.5.919
Frost, Ray L., Bahfenne, Silmarilly, Čejka, Jiří, Sejkora, Jiří, Plášil, Jakub, Palmer, Sara J., Keeffe, Eloise C., Němec, Ivan (2011) Dussertite BaFe3+3(AsO4)2(OH)5 - a Raman spectroscopic study of a hydroxy-arsenate mineral. Journal of Raman Spectroscopy, 42 (1) 56-61 doi:10.1002/jrs.2612(includes EPMA data)
Localities for Dussertite
Showing 48 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.
Algeria (TL) | |
| C. R. Acad. Sci. Paris (1925) +1 other reference |
Australia | |
| Downes et al. (2006) |
China | |
| Lairen Lai and Yi Li (1991) +2 other references |
Czech Republic | |
| Sejkora et al. (2006) +1 other reference |
Europe | |
| Kolitsch (1997) +1 other reference |
France | |
| Chris Auer collection |
| Boisson J.-M. (2025) |
| Gourault et al. (2021) |
| Cédric Lheur collection. |
| Favreau et al. (2003) |
| Vincent Bourgoin collection. |
| Geneva Museum specimen and Raman ... +1 other reference |
| Favreau et al. (2024) | |
| Favreau et al. (2024) | |
Germany | |
| Wittern (2001) |
| Walenta (1992) +1 other reference |
| |
| |
| Walenta (1992) | |
| Walenta (1992) |
| Wittern (2001) | |
| Reppke (1988) |
| Weiß (1990) | |
| Collection of Steffen Michalski | |
| Petitjean et al. (2007) |
| Martin et al. (1994) |
| Massanek et al. (2005) |
| Massanek et al. (2005) | |
| Gröbner et al. (2007) +1 other reference |
Greece | |
| Rieck et al. (2018) |
| no description given yet] +1 other reference | |
Indonesia | |
| Dill (2003) |
Italy | |
| Fiori et al. (2000) |
Mexico | |
| Palache et al. (1951) +1 other reference |
Russia | |
| Grant et al. (2001) |
Spain | |
| CARMONA RUIZ et al. (2025) |
| Joan Abella y Cruces (2019) |
Switzerland | |
| Roth et al. (2022) |
Thailand | |
| Patrice Queneau Collection First ... |
Turkey | |
| Bernasconi et al. (1980) |
USA | |
| Kampf et al. (2018) |
| Marty | |
| Newmont Mining Corporation |
| Castor et al. (2004) +1 other reference | |
| Mineralogical Society of America - ... | |
| Castor et al. (2004) | |
| Barrick Gold Corporation | |
| Castor et al. (2004) |
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Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany