Naujakasite (original) (raw)
A valid IMA mineral species - grandfathered
About NaujakasiteHide
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Formula:
(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26
Colour:
Gray to silver-white; colourless in transmitted light.
Specific Gravity:
2.615 - 2.622
Crystal System:
Monoclinic
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2865:9
0fe6dcad-8fcf-416e-ab90-1d29b43f159a
IMA Classification of NaujakasiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na6Fe2+Al4Si8O26
Classification of NaujakasiteHide
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9.EG.10
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
73.1.1.1
73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
1 : Condensed Tetrahedral Sheets with double layers
16.4.5
16 : Silicates Containing Aluminum and other Metals
4 : Aluminosilicates of Na and K
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Nj | 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 NaujakasiteHide
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Colour:
Gray to silver-white; colourless in transmitted light.
Cleavage:
Perfect
Micaceous (perfect) on {001}; on {401} and {010}, distinct.
Density:
2.615 - 2.622 g/cm3 (Measured) 2.661 g/cm3 (Calculated)
Optical Data of NaujakasiteHide
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RI values:
_n_α = 1.537 _n_β = 1.550 _n_γ = 1.556
2V:
Measured: 52° to 71°, Calculated: 66°
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of NaujakasiteHide
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Mindat Formula:
(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26
Common Impurities:
Ti,Mg,Ca,K,H2O,P
Crystallography of NaujakasiteHide
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Crystal System:
Monoclinic
Cell Parameters:
a = 15.025 Å, b = 7.991 Å, c = 10.486 Å
β = 113.67°
Ratio:
a:b:c = 1.88 : 1 : 1.312
Unit Cell V:
1,153.08 ų (Calculated from Unit Cell)
Comment:
Point Group: 2/m; 2; or m: Space Group: C2/m; Cm; or C2
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012434 | Naujakasite | Khalilov A D, Dzhafarov N K, Mamedov K S (1977) Crystal structure of naujakasite - Na6{Fe[(Si,Al)8Si4O26]} Doklady Akademii Nauk Azerbaidzhanskoi SSR 33 35-40 | 1977 | 0 | 293 | ||
| 0012670 | Naujakasite | Basso R, dal Negro A, Giusta A D, Ungaretti L (1975) The crystal structure of naujakasite, a double sheet silicate Gronlands Geologiske Undersogelse: Bulletin 116 11-24 | 1975 | Tuperssuatsiait Bay, Illimaussaq complex, Narsaq, Greenland | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.11 Å | (50 |
| 6.88 Å | (50) |
| 4.23 Å | (50) |
| 3.99 Å | (100) |
| 3.98 Å | (50) |
| 3.69 Å | (60) |
| 3.62 Å | (50) |
| 3.56 Å | (70) |
| 3.44 Å | (60) |
| 3.12 Å | (50) |
| 3.06 Å | (60B) |
| 2.79 Å | (60) |
| 2.65 Å | (50) |
| 2.61 Å | (60) |
| 2.49 Å | (50) |
| 2.26 Å | (70) |
Comments:
Naujakasik, Greenland. Data from Peterson 1967.
Geological EnvironmentHide
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Type Occurrence of NaujakasiteHide
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General Appearance of Type Material:
Aggregates of pseudo-hexagonal plates.
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark (1933.31); U.S. National Museum of Natural History, Washington, D.C., USA (97479).
Geological Setting of Type Material:
Associated Minerals at Type Locality:
Other Language Names for NaujakasiteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.EG.05 | Cymrite | BaAl2Si2(O,OH)8 · H2O | Mon. 2 : _P_21 |
|---|---|---|---|
| 9.EG.10 | Manganonaujakasite | Na6(Mn2+,Fe2+)Al4Si8O26 | Mon. 2/m : _B_2/m |
| 9.EG.15 | Dmisteinbergite | Ca(Al2Si2O8) | Trig. 32 : _P_312 |
| 9.EG.20 | Kampfite | Ba12(Si11Al5)O31(CO3)8Cl5 | Mon. m |
| 9.EG.25 | Strätlingite | Ca2Al2SiO7 · 8H2O | Trig. 3_m_ : R_3_m |
| 9.EG.25 | Vertumnite | Ca4Al4Si4O6(OH)24 · 3H2O | Mon. 2/m : _P_21/m |
| 9.EG.30 | Eggletonite | (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O | Mon. |
| 9.EG.30 | Ganophyllite | (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O | Mon. 2/m |
| 9.EG.30 | Tamaite | (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O | Mon. 2/m : _P_21/b |
| 9.EG.35 | Coombsite | KMn2+13(Si,Al)18O42(OH)14 | Trig. |
| 9.EG.35 | Zussmanite | K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14 | Trig. 3 : _R_3 |
| 9.EG.40 | Franklinphilite | (K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2O | Tric. |
| 9.EG.40 | Lennilenapeite | K6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O | Tric. |
| 9.EG.40 | Parsettensite | (K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O | Mon. 2/m : _B_2/m |
| 9.EG.40 | Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O | Tric. 1 : _P_1 |
| 9.EG.40 | Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 | Tric. 1 : _P_1 |
| 9.EG.45 | Latiumite | (Ca,K)4(Si,Al)5O11(SO4,CO3) | Mon. 2 : _P_21 |
| 9.EG.45 | Tuscanite | KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O | Mon. 2/m : _P_21/b |
| 9.EG.45 | Levantite | KCa3Al2(SiO4)(Si2O7)(PO4) | Mon. 2 : _P_21 |
| 9.EG.50 | Jagoite | Pb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6 | Hex. 6_m_2 : _P_6_c_2 |
| 9.EG.55 | Wickenburgite | CaPb3Al2Si10O24(OH)6 | Trig. 3_m_ : P_31_c |
| 9.EG.60 | Hyttsjöite | Pb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2O | Trig. 3 : _R_3 |
| 9.EG.65 | Armbrusterite | K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EG.70 | Britvinite | [Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)] | Tric. 1 : _P_1 |
| 9.EG.70 | Roymillerite | Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5 | Tric. 1 : _P_1 |
| 9.EG.75 | Bannisterite | (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O | Mon. 2/m : _B_2/b |
| 9.EG.75 | UM1989-30-SiO:AlBaCaFeHKMgMn | (Ba,Ca)(Mn,Fe,Mg)22(Si,Al)32O76(OH)16 · 12H2O | |
| 9.EG.75 | Kayupovaite | Na2Mn10[(Si14Al2)O38(OH)8] · 7H2O | Mon. 2/m : _B_2/b |
Other InformationHide
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Thermal Behaviour:
TGA curve shows a gradual loss of water (1.7%) up to 500°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 NaujakasiteHide
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References for NaujakasiteHide
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Reference List:
Khomyakov, Alexander P., Sørensen, Henning, Petersen, Ole V., Bailey, John C. (2001) Naujakasite from the Ilímaussaq alkaline complex, South Greenland, and the Lovozero alkaline complex, Kola Peninsula, Russia: a comparison. Geology of Greenland Survey Bulletin, 190 (190) 95-104 doi:10.34194/ggub.v190.5178
Localities for NaujakasiteHide
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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
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