Natrosilite (original) (raw)
A valid IMA mineral species
About NatrosiliteHide
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Crystal System:
Monoclinic
Name:
Derives from the composition, including NATRium (sodium in Latin) and SILIcon.
This page provides mineralogical data about Natrosilite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2863:5
5366752c-3ebc-488d-b83d-f2fcd76df4ce
IMA Classification of NatrosiliteHide
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Type description reference:
Classification of NatrosiliteHide
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9.EE.40
9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
74.3.5.1
74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
14.1.1
14 : Silicates not Containing Aluminum
1 : Silicates of the alkali metals
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 |
|---|---|---|
| Ns | 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 NatrosiliteHide
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Cleavage:
Perfect
{100} micaceous (perfect), {001} distinct, {01l} poor.
Density:
2.48 g/cm3 (Measured) 2.51 g/cm3 (Calculated)
Optical Data of NatrosiliteHide
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RI values:
_n_α = 1.507 _n_β = 1.517 _n_γ = 1.521
2V:
Measured: 49° to 64°, Calculated: 64°
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
Y ∧ c = -12° to 2°.
Chemistry of NatrosiliteHide
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Crystallography of NatrosiliteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.30(2) Å, b = 4.88(1) Å, c = 8.27(3) Å
β = 104.25°
Ratio:
a:b:c = 2.52 : 1 : 1.695
Unit Cell V:
481.12 ų (Calculated from Unit Cell)
Twinning:
Twins on {100}, were noted on synthetic material by Donnay and Donnay.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0009344 | Natrosilite | Pant A K (1968) A reconsideration of the crystal structure of beta-Na2Si2O5 Acta Crystallographica B24 1077-1083 |  |
1968 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.06 Å | (100) |
| 4.17 Å | (60) |
| 3.97 Å | (80) |
| 3.64 Å | (70) |
| 2.98 Å | (90) |
| 2.435 Å | (80) |
Geological EnvironmentHide
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Type Occurrence of NatrosiliteHide
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General Appearance of Type Material:
Pseudohexagonal thick-tabular crystals to 6 cm in size.
Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia, 3394.
Mining Institute, St.Petersburg, Russia, 1087/1.
A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, vis5123, vis5147.
Geological Setting of Type Material:
Pegmatitic segregations of nepheline syenite.
Associated Minerals at Type Locality:
Reference:
Timoshenkov, I.M., Men´shikov, Y.P., Gannibal, L.F., Bussen, I.V. (1975) A natural sodium silicate, natrosilite, from the Lovozero massif. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 104(3): 317-321.
Synonyms of NatrosiliteHide
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Other Language Names for NatrosiliteHide
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Simplified Chinese:硅钠石
Traditional Chinese:矽鈉石
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.EE. | Cairncrossite | Sr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-x | Tric. 1 : _P_1 |
|---|---|---|---|
| 9.EE.05 | Bementite | Mn7Si6O15(OH)8 | Mon. |
| 9.EE.07 | Innsbruckite | Mn33(Si2O5)14(OH)38 | Mon. m : B m |
| 9.EE.10 | Brokenhillite | Mn8Si6O15(OH)10 | Hex. 6_m_ m : P_63_m c |
| 9.EE.10 | Pyrosmalite-(Fe) | Fe2+8Si6O15(OH,Cl)10 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.EE.10 | Friedelite | Mn2+8Si6O15(OH,Cl)10 | Mon. 2/m : _B_2/m |
| 9.EE.10 | Pyrosmalite-(Mn) | Mn2+8Si6O15(OH,Cl)10 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.EE.10 | Mcgillite | (Mn,Fe)8Si6O15(OH)8Cl2 | Mon. 2/m : _B_2/m |
| 9.EE.15 | Nelenite | (Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3] | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.EE.15 | Schallerite | Mn2+16As3Si12O36(OH)17 | Trig. 3_m_ : _P_3_m_1 |
| 9.EE.20 | Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Tuperssuatsiaite | Fe3+Fe3+2(Na◻)◻2Si8O20(OH)2(H2O)4 · 2H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Yofortierite | Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Unnamed (Na-Ca-Fe-Silicate-Hydrate) | NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2O | Tric. 1 : _P_1 |
| 9.EE.20 | Windmountainite | ◻Fe3+2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Ikorskyite | KMn3+(Si4O10) · 3H2O | Mon. 2/m : _P_21/b |
| 9.EE.25 | Falcondoite | (Ni,Mg)4Si6O15(OH)2 · 6H2O | Orth. |
| 9.EE.25 | Loughlinite | Na2Mg3Si6O16 · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.EE.25 | Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n a |
| 9.EE.25 | Kalifersite | (K,Na)5Fe3+7Si20O50(OH)6 · 12H2O | Tric. 1 : _P_1 |
| 9.EE.30 | Gyrolite | NaCa16Si23AlO60(OH)8 · 14H2O | Tric. 1 : _P_1 |
| 9.EE.30 | Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O | Hex. |
| 9.EE.30 | Tungusite | Ca4Fe2Si6O15(OH)6 | Tric. 1 : _P_1 |
| 9.EE.35 | Reyerite | (Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O | Trig. 3 : _P_3 |
| 9.EE.35 | Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O | Trig. |
| 9.EE.35 | Kodamaite | Na3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O | Tric. 1 : _P_1 |
| 9.EE.45 | Makatite | Na2Si4O8(OH)2 · 4H2O | Mon. 2/m : _P_21/b |
| 9.EE.50 | Varennesite | Na8Mn2Si10O25(OH,Cl)2 · 12H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.EE.55 | Raite | Mn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6 | Orth. 222 : _C_222 |
| 9.EE.60 | Intersilite | Na6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2O | Mon. |
| 9.EE.65 | Shafranovskite | Na3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O | Trig. 3_m_ : P_31_c |
| 9.EE.65 | Zakharovite | Na4Mn5Si10O24(OH)6 · 6H2O | Trig. 3_m_ |
| 9.EE.70 | Zeophyllite | Ca13Si10O28(OH)2F8 · 6H2O | Trig. 3 : _R_3 |
| 9.EE.75 | Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 | Hex. |
| 9.EE.80 | Fedorite | (Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O | Tric. 1 : _P_1 |
| 9.EE.80 | Martinite | (Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2 · 4H2O | Tric. 1 : _P_1 |
| 9.EE.80 | Ellingsenite | Na5Ca6Si18O38(OH)13 · 6H2O | Tric. 1 : _P_1 |
| 9.EE.85 | Lalondeite | (Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 · 3H2O | Tric. 1 : _P_1 |
Other InformationHide
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Notes:
Water soluble. Soluble in weak acids.
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 NatrosiliteHide
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References for NatrosiliteHide
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Localities for NatrosiliteHide
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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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- 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.
| Canada | |
|---|---|
| Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH) | HORVÁTH et al. (2000) |
| Greenland | |
| Kujalleq ⓘ Ilímaussaq complex | Andersen et al. (2015) |
| Russia | |
| Murmansk Oblast Khibiny Massif ⓘ Vuonnemiok River Valley | Anthony et al. (2000) |
| ⓘ Lovozero Massif | Mikhailova et al. (2023) |
| Lovozersky District Alluaiv Mountain ⓘ Umbozero North quarry | Pekov (1998) |
| ⓘ Karnasurt Mountain (TL) | [World of Stones 95:5-6 +4 other references |
| Karnasurt mine ⓘ Palitra pegmatite |
Pekov (2005) |