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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:
D'Ansite Group
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.


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Unique IdentifiersHide

Mindat ID:
1211
Long-form identifier:
mindat:1:1:1211:5

Similar NamesHide

D'Ansite-(Fe)A valid IMA mineral speciesNa21Fe2+(SO4)10Cl3
D'Ansite-(Mn)A valid IMA mineral speciesNa21Mn2+(SO4)10Cl3
DanaiteA variety of Arsenopyrite(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
DownsiteA valid IMA mineral species - pending publicationK2(MoO3)3(SO4) · 4H2O
Kansite (of Meyer et al.)A synonym of Mackinawite
TunisiteA valid IMA mineral speciesNaCa2Al4(CO3)4(OH)8Cl

IMA Classification of D'AnsiteHide

Classification of D'AnsiteHide

Strunz-mindat (2026):
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
Hey's CIM Ref.:
26.12

26 : Sulphates with Halide

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
D'anIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of D'AnsiteHide

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'AnsiteHide

Type:
Isotropic
RI values:
n = 1.488 - 1.489
Surface Relief:
Moderate (negative)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus

Chemistry of D'AnsiteHide

Mindat Formula:
Na21Mg(SO4)10Cl3
Element Weights:
Element% weight
O40.657 %
Na30.671 %
S20.371 %
Cl6.757 %
Mg1.544 %

Calculated from ideal end-member formula.
O
Na
S
Cl
Mg
Elements listed:
Cl, Mg, Na, O, S - search for minerals with similar chemistry

Crystallography of D'AnsiteHide

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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest 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'AnsiteHide

Other Language Names for D'AnsiteHide

Dutch:D'Ansiet
German:D'Ansit
Russian:Дансит
Spanish:D'Ansita

Relationship of D'Ansite to other SpeciesHide

Member of:
D'Ansite Group
Other Members of D'Ansite Group:
D'Ansite-(Fe)Na21Fe2+(SO4)10Cl3Iso. 43m : I43d
D'Ansite-(Mn)Na21Mn2+(SO4)10Cl3Iso. 43m : I43d

Related Minerals - Strunz-mindat GroupingHide

7.BC.ViskontitePb5Cu2(SO4)3(SeO3)(OH)6Orth. mm2 : Pmn21
7.BC.ZincochenitePb4Zn(SO4)2(OH)6Tric. 1 : P1
7.BC.D'Ansite-(Mn)Na21Mn2+(SO4)10Cl3Iso. 43m : I43d
7.BC.D'Ansite-(Fe)Na21Fe2+(SO4)10Cl3Iso. 43m : I43d
7.BC.Acmonidesite(NH4,K,Pb)8NaFe2+4(SO4)5Cl8Orth. 222 : C2221
7.BC.Adranosite(NH4)4NaAl2(SO4)4Cl(OH)2Tet. 4/mmm(4/m2/m2/m) : I41/acd
7.BC.ChromviskontitePb5Cu2(CrO4)3(SeO3)(OH)6Orth. mm2 : Pmn21
7.BC.BackitePb2AlTeO6ClTrig. 32 : P312
7.BC.Adranosite-(Fe)(NH4)4NaFe3+2(SO4)4Cl(OH)2Tet. 4/mmm(4/m2/m2/m) : I41/acd
7.BC.AgaitePb3CuTeO5(OH)2(CO3) Orth. mm2 : Pca21
7.BC.WildcatiteCaFe3+Te6+O5(OH)Trig. 3m(32/m) : P31m
7.BC.HagstromitePb8Cu2+(Te6+O6)2(CO3)Cl4Orth. mmm(2/m2/m2/m) : Ibam
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.10JarositeKFe3+3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10DorallchariteTlFe3+3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10ArgentojarositeAgFe3+3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10NatroaluniteNaAl3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10NatrojarositeNaFe3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10Beaverite-(Cu)Pb(Fe3+2Cu)(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10Beaverite-(Zn)Pb(Fe3+2Zn)(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10WalthieriteBa0.5Al3(SO4)2(OH)6Trig.
7.BC.10HuangiteCa0.5Al3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10'Natroalunite-2c'(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10PlumbojarositePb0.5Fe3+3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10Karlseifertite Pb(Ga2Ge)(AsO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10Hydroniumjarosite(H3O)Fe3+3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10Ammonioalunite(NH4)Al3(SO4)2(OH)6Trig.
7.BC.10Ammoniojarosite(NH4)Fe3+3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.10Schlossmacherite(H3O)Al3(SO4)2(OH)6Trig. 3m(32/m) : R3m
7.BC.15Ye'elimiteCa4Al6(SO4)O12Iso. 432 : I4132
7.BC.20NabokoiteKCu7(SO4)5(Te4+O3)OClTet. 4/mmm(4/m2/m2/m) : P4/ncc
7.BC.20PuniniteNa2Cu3O(SO4)3Mon. 2/m : B2/b
7.BC.20AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3ClTet. 4/mmm(4/m2/m2/m) : P4/ncc
7.BC.25ChlorothioniteK2Cu(SO4)Cl2Orth. mmm(2/m2/m2/m) : Pnma
7.BC.30EuchlorineKNaCu3(SO4)3OMon. 2/m
7.BC.30FedotoviteK2Cu3(SO4)3OMon. 2/m : B2/b
7.BC.35KamchatkiteKCu3(SO4)2OClOrth. mmm(2/m2/m2/m) : Pnma
7.BC.40PiypiteK4Cu4O2(SO4)4 · (Na,Cu)ClTet. 4 : I4
7.BC.45AlumoklyuchevskiteK3Cu3(Al,Fe3+)(SO4)4O2Tric. 1 : P1
7.BC.45BelousoviteKZn(SO4)ClMon. 2/m : P21/c
7.BC.45KlyuchevskiteK3Cu3(Fe3+,Al)(SO4)4O2Mon. 2
7.BC.47MülleritePb2Fe3+(Te6+O6)ClTrig. 32 : P3112
7.BC.50CaledonitePb5Cu2(SO4)3(CO3)(OH)6Orth. mm2 : Pmn21
7.BC.50ElasmochloiteNa3Cu6BiO4(SO4)5Mon. 2/m : P21/c
7.BC.52Eleomelanite(K2Pb)Cu4O2(SO4)4Mon. 2/m : P21/c
7.BC.55FalgariteK4(VO)3(SO4)5Mon. 2/m : B2/b
7.BC.55WherryitePb7Cu2(SO4)4(SiO4)2(OH)2Mon. 2/m : B2/m
7.BC.57KrasheninnikoviteKNa2CaMg(SO4)3FHex. 6/mmm(6/m2/m2/m) : P63/mcm
7.BC.60WulffiteK3NaCu4O2(SO4)4Orth. mm2
7.BC.60ParawulffiteK5Na3Cu8O4(SO4)8Mon. 2/m : P2/b
7.BC.60MammothitePb6Cu4AlSb5+O2(OH)16Cl4(SO4)2Mon. 2 : B2
7.BC.62ShuvaloviteK2(Ca2Na)(SO4)3FOrth. mmm(2/m2/m2/m) : Pnma
7.BC.65SaccoiteCa2Mn3+2F(OH)8 · 0.5(SO4)Tet. 4/mmm(4/m2/m2/m) : P4/ncc
7.BC.65LinaritePbCu(SO4)(OH)2Mon. 2/m : P21/m
7.BC.65Therasiaite(NH4)3KNa2Fe2+Fe3+(SO4)3Cl5Mon. m : Bb
7.BC.65FranksousaitePbCu(Se6+O4)(OH)2Mon. 2/m : P21/m
7.BC.65MunakataitePb2Cu2(Se4+O3)(SO4)(OH)4Mon. 2/m : P21/m
7.BC.65SchmiederitePb2Cu2(Se6+O4)(Se4+O3)(OH)4Mon. 2/m : P21/m
7.BC.70ChenitePb4Cu(SO4)2(OH)6Tric. 1 : P1
7.BC.75KrivovichevitePb3Al(OH)6(SO4)(OH)Trig. 3m : R3c
7.BC.80AnhydrokainiteKMg(SO4)Cl

Other InformationHide

Notes:
Soluble in water.
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'AnsiteHide

References for D'AnsiteHide

Localities for D'AnsiteHide

Showing 6 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Austria (TL)
 
  • Tyrol
    • Innsbruck-Land District
      • Absam
        • Hall valley
Autenreith et al. (1958) +1 other reference
Canada
 
  • Saskatchewan
Greengrass et al. (1999)
China
 
  • Hubei
    • Wuhan
      • Jianghan District
Anthony
Peru
 
  • Tacna
    • Jorge Basadre Province
Diaby et al. (2006)
USA
 
  • Utah
    • San Juan County
      • Red Canyon Mining District
Plášil et al. (2013)
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