D'Ansite
A valid IMA mineral species - grandfathered
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Formula:
Na21Mg(SO4)10Cl3
Colour:
Colorless, yellow, pale brown
Hardness:
2½ - 3
Specific Gravity:
2.63 - 2.655
Crystal System:
Isometric
Member of:
Name:
Named in honor of Jean D'Ans (16 August 1882, Fiume - 14 January 1969, Berlin, Germany), mineralogist at the Kali-forschungsanstalt (Technical University), Berlin, Germany who published many papers on equilibrium in salt systems.
The Mg analogue of d'ansite-(Fe) and d'ansite-(Mn).
First found in a paleogene salt deposit in central China, but first described from Austria.
First found in a paleogene salt deposit in central China, but first described from Austria.
Unique Identifiers
Mindat ID:
1211
Long-form identifier:
mindat:1:1:1211:5
Similar Names
| D'Ansite-(Fe) | A valid IMA mineral species | Na21Fe2+(SO4)10Cl3 |
| D'Ansite-(Mn) | A valid IMA mineral species | Na21Mn2+(SO4)10Cl3 |
| Danaite | A variety of Arsenopyrite | (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS |
| Downsite | A valid IMA mineral species - pending publication | K2(MoO3)3(SO4) · 4H2O |
| Kansite (of Meyer et al.) | A synonym of Mackinawite | |
| Tunisite | A valid IMA mineral species | NaCa2Al4(CO3)4(OH)8Cl |
IMA Classification of D'Ansite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na21Mg(S6+O4)10Cl3
First published:
1958
Classification of D'Ansite
7.BC.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
26.12
26 : Sulphates with Halide
26 : Sulphates with Halide
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 |
|---|---|---|
| D'an | 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 D'Ansite
Transparency:
Translucent
Colour:
Colorless, yellow, pale brown
Streak:
White
Hardness:
2½ - 3 on Mohs scale
Density:
2.63 - 2.655 g/cm3 (Measured) 2.60 g/cm3 (Calculated)
Optical Data of D'Ansite
Type:
Isotropic
RI values:
n = 1.488 - 1.489
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate
Chemistry of D'Ansite
Mindat Formula:
Na21Mg(SO4)10Cl3
Element Weights:
Crystallography of D'Ansite
Crystal System:
Isometric
Class (H-M):
43m - Hextetrahedral
Space Group:
I43m
Cell Parameters:
a = 15.95 Å
Unit Cell V:
4,057.72 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tetrahedra with {211} dominant, and {2_11}
Twinning:
Polysynthetic
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.396 Å | (100) |
| 2.815 Å | (100) |
| 3.123 Å | (60) |
| 2.584 Å | (40) |
| 4.257 Å | (30) |
| 3.982 Å | (30) |
| 2.518 Å | (25) |
Comments:
Synthetic, ICDD 41-1473.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 25 : Evaporites (prebiotic) | |
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] | |
| 45b : [Other oxidized fumarolic minerals] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of D'Ansite
Place of Conservation of Type Material:
No designated type material.
Associated Minerals at Type Locality:
Other Language Names for D'Ansite
Relationship of D'Ansite to other Species
Member of:
Other Members of D'Ansite Group:
| D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 | Iso. 43m : I43d |
| D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 | Iso. 43m : I43d |
Related Minerals - Strunz-mindat Grouping
| 7.BC. | Viskontite | Pb5Cu2(SO4)3(SeO3)(OH)6 |
| 7.BC. | Zincochenite | Pb4Zn(OH)6(SO4)2 |
| 7.BC. | D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 |
| 7.BC. | D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 |
| 7.BC. | Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 |
| 7.BC. | Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 |
| 7.BC. | Chromviskontite | Pb5Cu2(CrO4)3(SeO3)(OH)6 |
| 7.BC. | Backite | Pb2AlTeO6Cl |
| 7.BC. | Adranosite-(Fe) | (NH4)4NaFe3+2(SO4)4Cl(OH)2 |
| 7.BC. | Agaite | Pb3CuTeO5(OH)2(CO3) |
| 7.BC. | Wildcatite | CaFe3+Te6+O5(OH) |
| 7.BC. | Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 |
| 7.BC.07 | 'Apatelite' | Fe3(SO4)2(OH)5 · 0.5H2O |
| 7.BC.07 | 'Unnamed (Ba-Fe Vanadate)' | Ba, Fe, V, O, H |
| 7.BC.10 | Jarosite | KFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Dorallcharite | TlFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Argentojarosite | AgFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Natroalunite | NaAl3(SO4)2(OH)6 |
| 7.BC.10 | Natrojarosite | NaFe3(SO4)2(OH)6 |
| 7.BC.10 | Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 |
| 7.BC.10 | Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 |
| 7.BC.10 | Walthierite | Ba0.5Al3(SO4)2(OH)6 |
| 7.BC.10 | Huangite | Ca0.5Al3(SO4)2(OH)6 |
| 7.BC.10 | 'Natroalunite-2c' | (Na,Ca0.5,K)Al3(SO4)2(OH)6 |
| 7.BC.10 | Alunite | KAl3(SO4)2(OH)6 |
| 7.BC.10 | Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Karlseifertite | Pb(Ga2Ge)(AsO4)2(OH)6 |
| 7.BC.10 | Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Ammonioalunite | (NH4)Al3(SO4)2(OH)6 |
| 7.BC.10 | Ammoniojarosite | (NH4)Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 |
| 7.BC.10 | Schlossmacherite | (H3O)Al3(SO4)2(OH)6 |
| 7.BC.15 | Ye'elimite | Ca4Al6(SO4)O12 |
| 7.BC.20 | Nabokoite | KCu7(SO4)5(Te4+O3)OCl |
| 7.BC.20 | Puninite | Na2Cu3O(SO4)3 |
| 7.BC.20 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl |
| 7.BC.25 | Chlorothionite | K2Cu(SO4)Cl2 |
| 7.BC.30 | Euchlorine | KNaCu3(SO4)3O |
| 7.BC.30 | Fedotovite | K2Cu3(SO4)3O |
| 7.BC.35 | Kamchatkite | KCu3(SO4)2OCl |
| 7.BC.40 | Piypite | K4Cu4O2(SO4)4 · (Na,Cu)Cl |
| 7.BC.45 | Alumoklyuchevskite | K3Cu3(Al,Fe3+)(SO4)4O2 |
| 7.BC.45 | Belousovite | KZn(SO4)Cl |
| 7.BC.45 | Klyuchevskite | K3Cu3(Fe3+,Al)(SO4)4O2 |
| 7.BC.47 | Müllerite | Pb2Fe3+(Te6+O6)Cl |
| 7.BC.50 | Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| 7.BC.50 | Elasmochloite | Na3Cu6BiO4(SO4)5 |
| 7.BC.52 | Eleomelanite | (K2Pb)Cu4O2(SO4)4 |
| 7.BC.55 | Falgarite | K4(VO)3(SO4)5 |
| 7.BC.55 | Wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 |
| 7.BC.57 | Krasheninnikovite | KNa2CaMg(SO4)3F |
| 7.BC.60 | Wulffite | K3NaCu4O2(SO4)4 |
| 7.BC.60 | Parawulffite | K5Na3Cu8O4(SO4)8 |
| 7.BC.60 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 |
| 7.BC.62 | Shuvalovite | K2(Ca2Na)(SO4)3F |
| 7.BC.65 | Saccoite | Ca2Mn3+2F(OH)8 · 0.5(SO4) |
| 7.BC.65 | Linarite | PbCu(SO4)(OH)2 |
| 7.BC.65 | Therasiaite | (NH4)3KNa2Fe2+Fe3+(SO4)3Cl5 |
| 7.BC.65 | Franksousaite | PbCu(Se6+O4)(OH)2 |
| 7.BC.65 | Munakataite | Pb2Cu2(Se4+O3)(SO4)(OH)4 |
| 7.BC.65 | Schmiederite | Pb2Cu2(Se6+O4)(Se4+O3)(OH)4 |
| 7.BC.70 | Chenite | Pb4Cu(SO4)2(OH)6 |
| 7.BC.75 | Krivovichevite | Pb3Al(OH)6(SO4)(OH) |
| 7.BC.80 | Anhydrokainite | KMg(SO4)Cl |
Other Information
Notes:
Soluble in water.
Melts in the Bunsen burner flame.
Melts in the Bunsen burner flame.
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 D'Ansite
mindat.org URL:
https://www.mindat.org/min-1211.html
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Please feel free to link to this page.
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References for D'Ansite
Reference List:
Localities for D'Ansite
Showing 6 localities.
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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.
Austria (TL) | |
| Autenreith et al. (1958) +1 other reference |
Canada | |
| Greengrass et al. (1999) |
China | |
| Anthony |
Peru | |
| Diaby et al. (2006) |
USA | |
| Plášil et al. (2013) |
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