Tuperssuatsiaite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Tuperssuatsiaite
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
Member of:
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.
At least two visually similar, isomorphous species are known (Cámara et al., 2002). See also windhoekite.
Unique Identifiers
Mindat ID:
4057
Long-form identifier:
mindat:1:1:4057:6
GUID
(UUID V4):
(UUID V4):
f34e3b42-7108-4187-821f-78cfc11a3267
IMA Classification of Tuperssuatsiaite
Approved
IMA Formula:
Na2(Fe3+,Mn2+)3Si8O20(OH)2 · 4H2O
Approval year:
1984
First published:
1984
Classification of Tuperssuatsiaite
9.EE.20
9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
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
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
14 : Silicates not Containing Aluminum
20 : Silicates of Fe and alkali metals
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Tup | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Tup | Warr (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 Tuperssuatsiaite
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}
Good on the {100}
Fracture:
Conchoidal
Density:
2.465 g/cm3 (Measured) 2.12 g/cm3 (Calculated)
Optical Data of Tuperssuatsiaite
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.
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 Tuperssuatsiaite
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.
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 Analysis
Oxide wt%:
1 | 2 | |
---|---|---|
Na2O | 3.23 % | 3.80 % |
K2O | 0.78 % | 0.31 % |
Fe2O3 | 20.63 % | 19.77 % |
MnO | 5.31 % | 6.01 % |
ZnO | 0.81 % | 0.71 % |
MgO | 1.04 % | % |
SiO2 | 56.38 % | 56.62 % |
Al2O3 | 0.47 % | 0.60 % |
H2O (calc) | 11.35 % | 12.18 % |
Total: | 100 % | 100 % |
Empirical formulas:
Sample ID | Empirical 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 |
Sample references:
ID | Type | Locality | Reference | Notes |
---|---|---|---|---|
1 | Type Specimen | Tuperssuatsiat Bay, Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland | Fe calculated as Fe3+ Electron-microprobe. Average of seven analyses. | |
2 | North shore, Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland | Electron microprobe, average of the first nine analysis by Karup-Møller. | ||
3 | Aris Quarries, Aris, Windhoek Rural, Khomas Region, Namibia |
Crystallography of Tuperssuatsiaite
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°
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 Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
---|---|---|---|---|---|---|---|
0002916 | Tuperssuatsiaite | Camara 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 1458-1463 | 2002 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
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 Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Tuperssuatsiaite
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 Tuperssuatsiaite
Other Language Names for Tuperssuatsiaite
Russian:Туперссуатсиаит
Simplified Chinese:钠铁坡缕石
Spanish:Tuperssuatsiaita
Tuperssvatsiaita
Tuperssvatsiaita
Traditional Chinese:鈉鐵坡縷石
Relationship of Tuperssuatsiaite to other Species
Member of:
Other Members of this group:
Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : B2/m |
Raite | Mn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6 | Orth. 2 2 2 : C2 2 2 |
Unnamed (Na-Ca-Fe-Silicate-Hydrate) | NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2O | Tric. 1 : P1 |
Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O | Mon. 2/m : B2/m |
Windmountainite | ◻Fe3+2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : B2/m |
Yofortierite | Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
66 photos of Tuperssuatsiaite associated with Villiaumite | NaF |
52 photos of Tuperssuatsiaite associated with Aegirine | NaFe3+Si2O6 |
32 photos of Tuperssuatsiaite associated with Ellingsenite | Na5Ca6Si18O38(OH)13 · 6H2O |
24 photos of Tuperssuatsiaite associated with Makatite | Na2Si4O8(OH)2 · 4H2O |
23 photos of Tuperssuatsiaite associated with Natrolite | Na2Al2Si3O10 · 2H2O |
22 photos of Tuperssuatsiaite associated with Fluorite | CaF2 |
11 photos of Tuperssuatsiaite associated with Hilairite | Na2Zr[SiO3]3 · 3H2O |
11 photos of Tuperssuatsiaite associated with Quartz | SiO2 |
10 photos of Tuperssuatsiaite associated with Pectolite | NaCa2Si3O8(OH) |
8 photos of Tuperssuatsiaite associated with Phonolite |
Related Minerals - Strunz-mindat Grouping
9.EE. | Cairncrossite | Sr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-x |
9.EE.05 | Bementite | Mn7Si6O15(OH)8 |
9.EE.07 | Innsbruckite | Mn33(Si2O5)14(OH)38 |
9.EE.10 | Brokenhillite | Mn8Si6O15(OH)10 |
9.EE.10 | Pyrosmalite-(Fe) | Fe2+8Si6O15(OH,Cl)10 |
9.EE.10 | Friedelite | Mn2+8Si6O15(OH,Cl)10 |
9.EE.10 | Pyrosmalite-(Mn) | Mn2+8Si6O15(OH,Cl)10 |
9.EE.10 | Mcgillite | (Mn,Fe)8Si6O15(OH)8Cl2 |
9.EE.15 | Nelenite | (Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3] |
9.EE.15 | Schallerite | Mn2+16As3Si12O36(OH)17 |
9.EE.20 | Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
9.EE.20 | Yofortierite | Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O |
9.EE.20 | Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O |
9.EE.20 | Unnamed (Na-Ca-Fe-Silicate-Hydrate) | NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2O |
9.EE.20 | Windmountainite | ◻Fe3+2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
9.EE.25 | Falcondoite | (Ni,Mg)4Si6O15(OH)2 · 6H2O |
9.EE.25 | Loughlinite | Na2Mg3Si6O16 · 8H2O |
9.EE.25 | Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
9.EE.25 | Kalifersite | (K,Na)5Fe3+7Si20O50(OH)6 · 12H2O |
9.EE.30 | Gyrolite | NaCa16Si23AlO60(OH)8 · 14H2O |
9.EE.30 | Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O |
9.EE.30 | Tungusite | Ca4Fe2Si6O15(OH)6 |
9.EE.35 | Reyerite | (Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O |
9.EE.35 | Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O |
9.EE.35 | Kodamaite | Na3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O |
9.EE.40 | Natrosilite | Na2Si2O5 |
9.EE.45 | Makatite | Na2Si4O8(OH)2 · 4H2O |
9.EE.50 | Varennesite | Na8Mn2Si10O25(OH,Cl)2 · 12H2O |
9.EE.55 | Raite | Mn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6 |
9.EE.60 | Intersilite | Na6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2O |
9.EE.65 | Shafranovskite | Na3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O |
9.EE.65 | Zakharovite | Na4Mn5Si10O24(OH)6 · 6H2O |
9.EE.70 | Zeophyllite | Ca13Si10O28(OH)2F8 · 6H2O |
9.EE.75 | Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 |
9.EE.80 | Fedorite | (Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O |
9.EE.80 | Martinite | (Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2 · 4H2O |
9.EE.80 | Ellingsenite | Na5Ca6Si18O38(OH)13 · 6H2O |
9.EE.85 | Lalondeite | (Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 · 3H2O |
Fluorescence of Tuperssuatsiaite
Not fluorescent.
Other Information
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 Tuperssuatsiaite
mindat.org URL:
https://www.mindat.org/min-4057.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Tuperssuatsiaite
Reference List:
Dunn, Pete J., Ferraiolo, James A., Fleischer, Michael, Gobel, Volker, Grice, Joel D., Langley, Richard H., Shigley, James E., Vanko, David A., Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (11-12) 1329-1335
Localities for Tuperssuatsiaite
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).
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.
All localities listed without proper references should be considered as questionable.
Brazil | |
| Atencio et al. (2005) |
Azzi (2019) | |
Canada | |
| HORVÁTH et al. (2000) +1 other reference |
| Horváth et al. (1998) |
Horváth et al. (1998) | |
Greenland | |
| Petersen (2001) |
| Knut Edvard Larsen collection # 1107 ( Ex Hans Vidar Ellingsen & Astrid Haugen collection) |
Pekov et al. (2002) | |
| Karup-Møller et al. (1984) |
| Min Rec 36:3 pp275-280 +1 other reference |
Namibia | |
| Min Rec 36:3 pp275-280 +6 other references |
Russia | |
| ... |
| Arzamastsev et al. (2008) +1 other reference |
Pekov (2000) | |
USA | |
| Howard (2007) |
| Jerry Cone Collection |
Quick NavTopAbout TuperssuatsiaiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Chemical AnalysisCrystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Aris Quarries, Aris, Windhoek Rural, Khomas Region, Namibia