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Narsarsukite

A valid IMA mineral species - grandfathered
This page kindly sponsored by Frank Ruehlicke
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About NarsarsukiteHide

Formula:
Na4(Ti,Fe)2[Si8O20](O,OH,F)2
Colour:
Yellow, yellowish-white, grayish-white, honey-yellow, tan, pink, greenish-yellow, green, brown, orange, colourless
Lustre:
Vitreous, Pearly
Hardness:
5½ - 7
Specific Gravity:
2.64 - 2.83
Crystal System:
Tetragonal
Name:
Named for the type locality.

Unique IdentifiersHide

Mindat ID:
2841
Long-form identifier:
mindat:1:1:2841:3
GUID
(UUID V4):
20684ad4-9064-427d-8e0e-14ca7159e0aa

IMA Classification of NarsarsukiteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na2(Ti,Fe3+)Si4(O,F)11

Classification of NarsarsukiteHide

9.DJ.05

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
70.1.2.1

70 : INOSILICATES Column or Tube Structures
1 : Column or Tube Structures with columnar silicate units
17.1.29

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)

Mineral SymbolsHide

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

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

Physical Properties of NarsarsukiteHide

Vitreous, Pearly
Transparency:
Transparent, Translucent, Opaque
Comment:
pearly on {110}
Colour:
Yellow, yellowish-white, grayish-white, honey-yellow, tan, pink, greenish-yellow, green, brown, orange, colourless
Streak:
White
Hardness:
5½ - 7 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
{110} well developed/fair, {010} distinct
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
2.64 - 2.83 g/cm3 (Measured)    2.81(3) g/cm3 (Calculated)
Comment:
Mont St Hilaire, 2.783 from Montana

Optical Data of NarsarsukiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.601 - 1.614 nε = 1.632 - 1.655
Max Birefringence:
δ = 0.031
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Weak
Comments:
O = colorless to yellow; E = colorless to honey-yellow

Chemistry of NarsarsukiteHide

Mindat Formula:
Na4(Ti,Fe)2[Si8O20](O,OH,F)2

Crystallography of NarsarsukiteHide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
I4/m
Cell Parameters:
a = 10.72(5) Å, c = 7.94(5) Å
Ratio:
a:c = 1 : 0.741
Unit Cell V:
912.45 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular, equant

Crystallographic forms of NarsarsukiteHide

Crystal Atlas:
Image Loading
Click on an icon to view
Narsarsukite no.1 - Goldschmidt (1913-1926)
Narsarsukite no.2 - Goldschmidt (1913-1926)
Narsarsukite no.3 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000113NarsarsukitePeacor D R, Buerger M J (1962) The determination and refinement of the structure of narsarsukite, Na2TiOSi4O10 American Mineralogist 47 539-55619620293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.365 Å(100)
3.394 Å(80)
3.260 Å(80)
2.579 Å(60)
2.524 Å(60)
3.976 Å(50)
7.609 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
35 : Ultra-alkali and agpaitic igneous rocks
Stage 5: Initiation of plate tectonics<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)

Type Occurrence of NarsarsukiteHide

Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark.
Associated Minerals at Type Locality:
Reference:
Flink, G. (1899) Part I. On the minerals from Narsarsuk on the Firth of Tunugdliarfik in Southern Greenland. 8-180, In: Flink, G., Bøggild, O.B., Winther, C. (1901) Undersøgelser af Mineraler fra Julianehaab indsamlet af G. Flink 1897, Part II. On some minerals from the Nepheline-Syenite at Julianehaab, Greenland (Epistolite, Britholite, Schizolite and Steenstrupite) Meddelelser om Grønland: 24: 1-213.

Synonyms of NarsarsukiteHide

Other Language Names for NarsarsukiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
12 photos of Narsarsukite associated with AegirineNaFe3+Si2O6
11 photos of Narsarsukite associated with QuartzSiO2
9 photos of Narsarsukite associated with LeucospheniteBaNa4Ti2B2Si10O30
7 photos of Narsarsukite associated with ElpiditeNa2ZrSi6O15 · 3H2O
6 photos of Narsarsukite associated with PectoliteNaCa2Si3O8(OH)
4 photos of Narsarsukite associated with MicroclineK(AlSi3O8)
3 photos of Narsarsukite associated with ManganoneptuniteKNa2Li(Mn2+)2Ti2[Si4O12]2
2 photos of Narsarsukite associated with AlbiteNa(AlSi3O8)
2 photos of Narsarsukite associated with RaiteMn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6
2 photos of Narsarsukite associated with Pyroxene GroupADSi2O6

Related Minerals - Strunz-mindat GroupingHide

9.DJ.10Laplandite-(Ce)Na4CeTiPO4Si7O18 · 5H2OOrth. mmm (2/m 2/m 2/m) : Pmmm
9.DJ.15Caysichite-(Y)(Ca,Yb,Er)4Y4(Si8O20)(CO3)6(OH) · 7H2OOrth. mm2
9.DJ.20Seidite-(Ce)Na4(Ce,Sr)2[TiSi8O18(OH)2](O,OH,F)4 · 5H2OMon. 2/m : B2/b
9.DJ.25Carlosturanite(Mg,Fe,Ti)21(Si,Al)12O28(OH)34 · H2OMon. m : Bm
9.DJ.30JonesiteBa4(K,Na)2Ti4Al2(Si3O9)2(SiO4)4O2 · 6H2OMon. 2/m : P2/m

Other InformationHide

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 NarsarsukiteHide

References for NarsarsukiteHide

Reference List:

Localities for NarsarsukiteHide

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.
Antarctica
 
  • Eastern Antarctica
    • Queen Maud Land
Harris et al. (1993)
Brazil
 
  • Minas Gerais
    • Poços de Caldas
Azzi (2017)
Azzi (2019)
  • Paraná
    • Tijucas do Sul
      • Morro Redondo complex
Vilalva et al. (2010)
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
166-175. +4 other references
Birkett et al. (1992) +3 other references
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Vordereifel
        • Ettringen
[Hentschel et al. (5)
Greenland (TL)
 
  • Kujalleq
    • Igaliku
      • Narsaarsuk Plateau
Flink (1901) +1 other reference
Petersen (2001) +1 other reference
      • Kangerluarsuk Fjord
Petersen et al. (1999)
    • Illutalik Island
Upton et al. (1976)
  • Sermersooq
www.koeln.netsurf.de (1999)
Kazakhstan
 
  • Abai Region
    • Tarbagatai Range
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
Pavel.M. Kartashov (n.d.)
Mongolia
 
  • Khovd Province
    • Myangad District
Pavel.M. Kartashov (n.d.) +1 other reference
Morocco
 
  • Souss-Massa Region
    • Taroudant Province
      • Taliouine Cercle
        • Askaouen Caïdat
Choubert et al. (pontien) +4 other references
Namibia
 
  • Khomas Region
    • Windhoek Rural
      • Aris
Robin Tibbit collection (SXRD analysis by Uwe Kolitsch + EDS analysis by Franz Neuhold) +1 other reference
New Zealand
 
  • Bay of Plenty Region
...
NZJGG
NZJGG
NZJGG
Niger
 
  • Zinder
    • Gouré
Mineralogical Society of America - ...
    • Mounio Complex
Black (1963) +2 other references
Nigeria
 
  • Bauchi
    • Shira
Bennett et al. (1984) +1 other reference
Norway
 
  • Viken
    • Lunner
Raade et al. (1982)
Portugal
 
  • Azores
    • São Miguel
Samples collected by Luigi Chiappino ... +1 other reference
      • Ribeira Grande
Russia
 
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
      • Murunskii Massif
Konev et al. (1996) +1 other reference
        • Sirenevyi Kamen' Deposit
Konev et al. (1996)
  • Murmansk Oblast
    • Khibiny Massif
Pekov et al. (2004)
        • Kirovskii apatite mine
Pekov et al. (2006)
    • Lovozersky District
Sorokhtina N.V. et al. (2004)
      • Karnasurt Mountain
Pekov (1998) +1 other reference
Ivanyuk et al. (2006)
[World of Stones 95:5-6 +1 other reference
    • Turii Cape
... +1 other reference
USA
 
  • Arkansas
    • Hot Spring County
      • Magnet Cove
Smith (1988)
Horváth Collection - confirmed visually
    • Pulaski County
      • Little Rock
Smith (1988) +1 other reference
Horvath collection visual id.
Graham (1935) +1 other reference
    • Liberty County
Chris Tucker and John Betts specimens. +1 other reference
      • Sweet Grass Hills
Stewart (1959)
Stewart (1959)
  • New Mexico
    • Otero County
      • Cornudas Mountains
Dr. W. Stoll (private communication 2001 & 2004)
 
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