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Tuperssuatsiaite

A valid IMA mineral species
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About TuperssuatsiaiteHide

02286860017057166026116.jpg
Tuperssuatsiat Bay, Greenland
Formula:
Fe3+Fe3+2(Na◻)◻2Si8O20(OH)2(H2O)4 · 2H2O
The IMA formula (see below) is not a charge-balanced end-member formula. The mindat formula (above) is charge-balanced and is derived from the proposed site occupancies listed in Table 11 of Leung & McDonald (2020). Note that in natural material, some Mn2+ and possibly Fe2+ partially replaces Fe3+ in both the M1 and M2 cation sites, with charge balance facilitated by increasing Na in the M3 site.
Colour:
Golden-yellow, reddish brown, , brown, dark brown, orange-yellow, green
Lustre:
Silky, Dull
Specific Gravity:
2.465
Crystal System:
Monoclinic
Name:
Named after its discovery locality, Tuperssuatsiat Bay, Illimaussaq complex, Narsaq municipality, Greenland.
Palygorskite Group.

At least two visually similar, isomorphous species are known (Cámara et al., 2002). See also windhoekite.


Unique IdentifiersHide

Mindat ID:
4057
Long-form identifier:
mindat:1:1:4057:6
GUID
(UUID V4):
f34e3b42-7108-4187-821f-78cfc11a3267

IMA Classification of TuperssuatsiaiteHide

Classification of TuperssuatsiaiteHide

9.EE.20

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
Dana 7th ed.:
74.3.1.2
74.3.1a.2

74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
14.20.5

14 : Silicates not Containing Aluminum
20 : Silicates of Fe and alkali metals

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
TupIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
TupWarr (2020)Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

Physical Properties of TuperssuatsiaiteHide

Silky, Dull
Transparency:
Transparent
Colour:
Golden-yellow, reddish brown, , brown, dark brown, orange-yellow, green
Comment:
From Aris Quarry, Namibia crystals may be colour zoned. Some green crystals turn brown after collection and this may be due to a coupled dehydration-oxidation mechanism.
Streak:
Brownish yellow
Cleavage:
Distinct/Good
Good on the {100}
Fracture:
Conchoidal
Density:
2.465 g/cm3 (Measured)    2.12 g/cm3 (Calculated)

Optical Data of TuperssuatsiaiteHide

Type:
Biaxial (+)
RI values:
nα = 1.539 nβ = 1.560 nγ = 1.595
2V:
Measured: 103° to 103°, Calculated: 78°
Max Birefringence:
δ = 0.056
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none
Optical Extinction:
X ∧ a = 20°-22° (in the obtuse angle β); Y = b; Z ∧ c = 5°-7°.
Pleochroism:
Weak
Comments:
X = colorless; Y = colorless to light reddish brown; Z = pale yellowish brown to dark reddish brown.

Chemistry of TuperssuatsiaiteHide

Mindat Formula:
Fe3+Fe3+2(Na◻)◻2Si8O20(OH)2(H2O)4 · 2H2O

The IMA formula (see below) is not a charge-balanced end-member formula. The mindat formula (above) is charge-balanced and is derived from the proposed site occupancies listed in Table 11 of Leung & McDonald (2020). Note that in natural material, some Mn2+ and possibly Fe2+ partially replaces Fe3+ in both the M1 and M2 cation sites, with charge balance facilitated by increasing Na in the M3 site.
Common Impurities:
K,Mg,Ca,Mn,Zn,Al,Ti,F,Cl

Chemical AnalysisHide

Oxide wt%:
 12
Na2O3.23 %3.80 %
K2O0.78 %0.31 %
Fe2O320.63 %19.77 %
MnO5.31 %6.01 %
ZnO0.81 %0.71 %
MgO1.04 % %
SiO256.38 %56.62 %
Al2O30.47 %0.60 %
H2O (calc)11.35 %12.18 %
Total:100 %100 %
Empirical formulas:
Sample IDEmpirical Formula
3(Na1.85K0.01)Σ1.86(Fe2.83Mn0.08Mg0.04Ca0.02Zn0.02)Σ2.99(Si7.96Al0.03Ti0.02Σ8.01O20((OH)2.47F0.04Cl0.03)Σ2.54(OH)2)3.90

Crystallography of TuperssuatsiaiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 13.72 Å, b = 18 Å, c = 4.82 Å
β = 104.28°
Ratio:
a:b:c = 0.762 : 1 : 0.268
Unit Cell V:
1280.91 ų
Z:
2
Morphology:
Acicular or ruler-shaped crystals up to 1 cm, forming fan-shaped aggregates or rosettes.
Twinning:
Common. With {100} as both the twin and the composition plane.
Comment:
Point Group: 2/m or m: Space Group: C2/c or Cc:

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0002916TuperssuatsiaiteCamara F, Garvie L A J, Devouard B, Groy T L, Buseck P R (2002) The structure of Mn-tuperssuatsiaite, a palygorskite-related mineral American Mineralogist 87 1458-146320020293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.78 Å(very strong)
4.12 Å(moderate)
3.39 Å(strong broad)
2.63 Å(moderate)
2.51 Å(moderate)
Comments:
Aris phonolite, Windhoek, Namibia. The data are from von Knorring et al. (1992).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of TuperssuatsiaiteHide

General Appearance of Type Material:
As cavity filling in late veins, forming mm- to cm-sized red-brown fan shaped aggregates or rosettes of fine fibres.
Place of Conservation of Type Material:
Geological Museum, University of Copenhagen, Denmark.
Geological Setting of Type Material:
Alkaline intrusion.
Associated Minerals at Type Locality:
Reference:
Karup-Møller S, Petersen O V (1984) Tuperssuatsiaite, a new mineral species from the Ilímaussaq intrusion in South Greenland. Neues Jahrbuch für Mineralogie, Monatshefte 1984: 501-512

Synonyms of TuperssuatsiaiteHide

Other Language Names for TuperssuatsiaiteHide

Relationship of Tuperssuatsiaite to other SpeciesHide

Other Members of this group:
Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2OMon. 2/m : B2/m
RaiteMn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6Orth. 2 2 2 : C2 2 2
Unnamed (Na-Ca-Fe-Silicate-Hydrate)NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2OTric. 1 : P1
WindhoekiteFe3+(Fe3+1.670.33)Ca22Si8O20(OH)2(H2O)4(OH)2 · 6H2OMon. 2/m : B2/m
Windmountainite◻Fe3+2Mg22Si8O20(OH)2(H2O)4 · 4H2OMon. 2/m : B2/m
YofortieriteMn2+Mn2+2Mn2+22Si8O20(OH)2(H2O)4 · 4H2OMon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
66 photos of Tuperssuatsiaite associated with VilliaumiteNaF
52 photos of Tuperssuatsiaite associated with AegirineNaFe3+Si2O6
32 photos of Tuperssuatsiaite associated with EllingseniteNa5Ca6Si18O38(OH)13 · 6H2O
24 photos of Tuperssuatsiaite associated with MakatiteNa2Si4O8(OH)2 · 4H2O
23 photos of Tuperssuatsiaite associated with NatroliteNa2Al2Si3O10 · 2H2O
22 photos of Tuperssuatsiaite associated with FluoriteCaF2
11 photos of Tuperssuatsiaite associated with HilairiteNa2Zr[SiO3]3 · 3H2O
11 photos of Tuperssuatsiaite associated with QuartzSiO2
10 photos of Tuperssuatsiaite associated with PectoliteNaCa2Si3O8(OH)
8 photos of Tuperssuatsiaite associated with Phonolite

Related Minerals - Strunz-mindat GroupingHide

9.EE.CairncrossiteSr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-xTric. 1 : P1
9.EE.05BementiteMn7Si6O15(OH)8Mon.
9.EE.07InnsbruckiteMn33(Si2O5)14(OH)38Mon. m : Bm
9.EE.10BrokenhilliteMn8Si6O15(OH)10Hex. 6mm : P63mc
9.EE.10Pyrosmalite-(Fe)Fe2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
9.EE.10FriedeliteMn2+8Si6O15(OH,Cl)10Mon. 2/m : B2/m
9.EE.10Pyrosmalite-(Mn)Mn2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
9.EE.10Mcgillite(Mn,Fe)8Si6O15(OH)8Cl2Mon. 2/m : B2/m
9.EE.15Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Trig. 3m (3 2/m) : R3m
9.EE.15SchalleriteMn2+16As3Si12O36(OH)17Trig. 3m : P3m1
9.EE.20Palygorskite◻Al2Mg22Si8O20(OH)2(H2O)4 · 4H2OMon. 2/m : B2/m
9.EE.20YofortieriteMn2+Mn2+2Mn2+22Si8O20(OH)2(H2O)4 · 4H2OMon. 2/m : B2/m
9.EE.20WindhoekiteFe3+(Fe3+1.670.33)Ca22Si8O20(OH)2(H2O)4(OH)2 · 6H2OMon. 2/m : B2/m
9.EE.20Unnamed (Na-Ca-Fe-Silicate-Hydrate)NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2OTric. 1 : P1
9.EE.20Windmountainite◻Fe3+2Mg22Si8O20(OH)2(H2O)4 · 4H2OMon. 2/m : B2/m
9.EE.25Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2OOrth.
9.EE.25LoughliniteNa2Mg3Si6O16 · 8H2OOrth. mmm (2/m 2/m 2/m)
9.EE.25SepioliteMg4(Si6O15)(OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.EE.25Kalifersite(K,Na)5Fe3+7Si20O50(OH)6 · 12H2OTric. 1 : P1
9.EE.30GyroliteNaCa16Si23AlO60(OH)8 · 14H2OTric. 1 : P1
9.EE.30OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.
9.EE.30TungusiteCa4Fe2Si6O15(OH)6Tric. 1 : P1
9.EE.35Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig. 3 : P3
9.EE.35Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.
9.EE.35KodamaiteNa3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O Tric. 1 : P1
9.EE.40NatrosiliteNa2Si2O5Mon. 2/m : P21/b
9.EE.45MakatiteNa2Si4O8(OH)2 · 4H2OMon. 2/m : P21/b
9.EE.50VarennesiteNa8Mn2Si10O25(OH,Cl)2 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.EE.55RaiteMn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6Orth. 2 2 2 : C2 2 2
9.EE.60IntersiliteNa6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2OMon.
9.EE.65ShafranovskiteNa3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2OTrig. 3m : P3 1c
9.EE.65ZakharoviteNa4Mn5Si10O24(OH)6 · 6H2OTrig. 3m
9.EE.70ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
9.EE.75Minehillite(K,Na)2-3Ca28Zn4Al4Si40O112(OH)16Hex.
9.EE.80Fedorite(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2OTric. 1 : P1
9.EE.80Martinite(Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2 · 4H2OTric. 1 : P1
9.EE.80EllingseniteNa5Ca6Si18O38(OH)13 · 6H2OTric. 1 : P1
9.EE.85Lalondeite(Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 · 3H2OTric. 1 : P1

Fluorescence of TuperssuatsiaiteHide

Not fluorescent.

Other InformationHide

IR Spectrum:
Absorption bands caused by structural H2O and (OH), zeolitic H2O, absorbed H2O, and SiO4 tetrahedra.
Thermal Behaviour:
The DTA curve shows one endothermic peak at room temperature caused by the release of absorbed water. The mineral recrystallizes around 250°C and just below 700°C.
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 TuperssuatsiaiteHide

References for TuperssuatsiaiteHide

Reference List:

Localities for TuperssuatsiaiteHide

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.

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.
Brazil
 
  • Minas Gerais
    • Poços de Caldas
Atencio et al. (2005)
Azzi (2019)
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
HORVÁTH et al. (2000) +1 other reference
      • Lajemmerais RCM
        • Varennes & St-Amable
Horváth et al. (1998)
Horváth et al. (1998)
Greenland
 
  • Kujalleq
Petersen (2001)
      • Kangerluarsuk Fjord
        • Head of Kangerluarsuk
          • Lilleelv
Knut Edvard Larsen collection # 1107 ( Ex Hans Vidar Ellingsen & Astrid Haugen collection)
Pekov et al. (2002)
      • Tunulliarfik Fjord
Karup-Møller et al. (1984)
Min Rec 36:3 pp275-280 +1 other reference
Namibia
 
  • Khomas Region
    • Windhoek Rural
      • Aris
Min Rec 36:3 pp275-280 +6 other references
Russia
 
  • Murmansk Oblast
...
    • Lovozersky District
Arzamastsev et al. (2008) +1 other reference
Pekov (2000)
USA
 
  • Arkansas
Howard (2007)
  • New Mexico
    • Otero County
      • Cornudas Mountains
Jerry Cone Collection
 
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