Learning Center What is a mineral?The most common minerals on earth Information for Educators Mindat Articles The Elements The Rock H. Currier Digital Library Geologic Time

Minerals by Properties Minerals by Chemistry Advanced Locality Search Random Mineral Random Locality Search by minID Localities Near Me Search Articles Search Glossary More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Mining Companies Statistics Users Mineral Museums Clubs & Organizations Mineral Shows & Events The Mindat Directory Device Settings The Mineral Quiz

Photo Search Photo Galleries Search by Color New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Naujakasite

A valid IMA mineral species - grandfathered

This page is currently not sponsored. Click here to sponsor this page.

Photos of Naujakasite (33)

Naujakasite Gallery Search Photos of Naujakasite

Edit Add Synonym Edit CIF structures Clear Cache

Naujakasite

Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite

Kvanefjeld adit, Kvanefjeld deposit, Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite, etc.

Kvanefjeld adit, Kvanefjeld deposit, Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite

Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite

Kvanefjeld adit, Kvanefjeld deposit, Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite, etc.

Kvanefjeld adit, Kvanefjeld deposit, Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite

Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Naujakasite

Kvanefjeld adit, Kvanefjeld deposit, Kuannersuit Plateau, Ilímaussaq complex, Kujalleq, Greenland

Hide all sections | Show all sections

About NaujakasiteHide

Formula:

(Na,K)₆(Fe²⁺,Mn²⁺,Ca)(Al,Fe)₄Si₈O₂₆

Colour:

Gray to silver-white; colourless in transmitted light.

Lustre:

Pearly

Hardness:

2 - 3

Specific Gravity:

2.615 - 2.622

Crystal System:

Monoclinic

Name:

After the type locality at Naujakasik (Naajakasik), Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland. First collected by Gustav Flink in 1897, and first described by Bøggild (1933).

Type Locality:

ⓘ Naujakasik (Naajakasik), Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland

The Fe2+ analogue of Manganonaujakasite.

Unique IdentifiersHide

Mindat ID:

2865

Long-form identifier:

mindat:1:1:2865:9

GUID
(UUID V4):

0fe6dcad-8fcf-416e-ab90-1d29b43f159a

IMA Classification of NaujakasiteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

Na₆Fe²⁺Al₄Si₈O₂₆

First published:

1933

Classification of NaujakasiteHide

Strunz-mindat (2024):

9.EG.10

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings

Dana 8th ed.:

73.1.1.1

73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
1 : Condensed Tetrahedral Sheets with double layers

Hey's CIM Ref.:

16.4.5

16 : Silicates Containing Aluminum and other Metals
4 : Aluminosilicates of Na and K

Mineral SymbolsHide

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

Lustre:

Pearly

Transparency:

Translucent

Comment:

Pearly on {001}

Colour:

Gray to silver-white; colourless in transmitted light.

Hardness:

2 - 3 on Mohs scale

Tenacity:

Brittle

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

Type:

Biaxial (-)

RI values:

n_α = 1.537 n_β = 1.550 n_γ = 1.556

2V:

Measured: 52° to 71°, Calculated: 66°

Max Birefringence:

δ = 0.019

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Low

Dispersion:

weak

Chemistry of NaujakasiteHide

Mindat Formula:

(Na,K)₆(Fe²⁺,Mn²⁺,Ca)(Al,Fe)₄Si₈O₂₆

Elements listed:

Al, Ca, Fe, K, Mn, Na, O, Si - search for minerals with similar chemistry

Common Impurities:

Ti,Mg,Ca,K,H₂O,P

Crystallography of NaujakasiteHide

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 Å³ (Calculated from Unit Cell)

Comment:

Point Group: 2/m; 2; or m: Space Group: C2/m; Cm; or C2

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
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)
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

data_global
_chemical_name_mineral 'Naujakasite'
loop_
_publ_author_name
'Khalilov A D'
'Dzhafarov N K'
'Mamedov K S'
_journal_name_full 'Doklady Akademii Nauk Azerbaidzhanskoi SSR'
_journal_volume 33 
_journal_year 1977
_journal_page_first 35
_journal_page_last 40
_publ_section_title
;
 Crystal structure of naujakasite - Na6{Fe[(Si,Al)8Si4O26]}
;
_database_code_amcsd 0012434
_chemical_formula_sum 'Na6 Fe Al4 Si8 O26'
_cell_length_a 15.086
_cell_length_b 7.993
_cell_length_c 10.515
_cell_angle_alpha 90
_cell_angle_beta 113.44
_cell_angle_gamma 90
_cell_volume 1163.291
_exptl_crystal_density_diffrn      2.690
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Na1   0.22990   0.50000   0.44030   1.00000   0.01849
Na2   0.34290   0.50000   0.11240   1.00000   0.02090
Na3   0.46440   0.00000   0.16480   1.00000   0.02166
Fe   0.00000   0.00000   0.00000   1.00000   0.01203
Al1   0.05840   0.19550   0.34110   0.50000   0.00709
Si1   0.05840   0.19550   0.34110   0.50000   0.00709
Al2   0.35360   0.19900   0.34950   0.50000   0.01077
Si2   0.35360   0.19900   0.34950   0.50000   0.01077
Si   0.15060   0.30800   0.13130   1.00000   0.00823
O1   0.03620   0.00000   0.27620   1.00000   0.01950
O2   0.10660   0.31160   0.25070   1.00000   0.01456
O3   0.13890   0.19680   0.50670   1.00000   0.01963
O4   0.10140   0.17920   0.01050   1.00000   0.01646
O5   0.13150   0.50000   0.06480   1.00000   0.00899
O6   0.26770   0.29270   0.21150   1.00000   0.01330
O7   0.32380   0.00000   0.36590   1.00000   0.02115
O8   0.45640   0.20750   0.32260   1.00000   0.01469

X-Ray Powder DiffractionHide

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

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 NaujakasiteHide

Type Locality:

ⓘ Naujakasik (Naajakasik), Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland

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:

Alkalic intrusion.

Associated Minerals at Type Locality:

Other Language Names for NaujakasiteHide

German:Naujakasit

Spanish:Naujakasita

Common AssociatesHide

Associated Minerals Based on Photo Data:

7 photos of Naujakasite associated with Sodalite	Na₄(Si₃Al₃)O₁₂Cl
6 photos of Naujakasite associated with Villiaumite	NaF
6 photos of Naujakasite associated with Aegirine	NaFe³⁺Si₂O₆
2 photos of Naujakasite associated with Steenstrupine-(Ce)	Na₁₄Mn²⁺₂Fe³⁺₂Ce₆Zr(Si₆O₁₈)₂(PO₄)₆(PO₃OH)(OH)₂ · 2H₂O
2 photos of Naujakasite associated with Arfvedsonite	[Na][Na₂][Fe²⁺₄Fe³⁺]Si₈O₂₂(OH)₂
1 photo of Naujakasite associated with Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂

Related Minerals - Strunz-mindat Grouping Hide

9.EG.05	Cymrite	BaAl₂Si₂(O,OH)₈ · H₂O	Mon. 2 : P2₁
9.EG.10	Manganonaujakasite	Na₆(Mn²⁺,Fe²⁺)Al₄Si₈O₂₆	Mon. 2/m : B2/m
9.EG.15	Dmisteinbergite	Ca(Al₂Si₂O₈)	Trig. 3 2 : P3 1 2
9.EG.20	Kampfite	Ba₁₂(Si₁₁Al₅)O₃₁(CO₃)₈Cl₅	Mon. m
9.EG.25	Strätlingite	Ca₂Al₂SiO₇ · 8H₂O	Trig. 3m : R3m
9.EG.25	Vertumnite	Ca₄Al₄Si₄O₆(OH)₂₄ · 3H₂O	Mon. 2/m : P2₁/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 : P2₁/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 : R3
9.EG.40	Franklinphilite	(K,Na)₄(Mn²⁺,Mg,Zn)₄₈(Si,Al)₇₂(O,OH)₂₁₆ · 6H₂O	Tric.
9.EG.40	Lennilenapeite	K_6-7(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 : B2/m
9.EG.40	Stilpnomelane	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O	Tric. 1 : P1
9.EG.40	Chalcodite	K(Fe³⁺,Mg,Fe²⁺)₈(Si,Al)₁₂(O,OH)₂₇	Tric. 1 : P1
9.EG.45	Latiumite	(Ca,K)₄(Si,Al)₅O₁₁(SO₄,CO₃)	Mon. 2 : P2₁
9.EG.45	Tuscanite	KCa₆(Si,Al)₁₀O₂₂(SO₄,CO₃)₂(OH) · H₂O	Mon. 2/m : P2₁/b
9.EG.45	Levantite	KCa₃Al₂(SiO₄)(Si₂O₇)(PO₄)	Mon. 2 : P2₁
9.EG.50	Jagoite	Pb₁₈Fe³⁺₄[Si₄(Si,Fe³⁺)₆][Pb₄Si₁₆(Si,Fe)₄]O₈₂Cl₆	Hex. 6 m2 : P6c2
9.EG.55	Wickenburgite	CaPb₃Al₂Si₁₀O₂₄(OH)₆	Trig. 3m : P3 1c
9.EG.60	Hyttsjöite	Pb₁₈Ba₂Ca₅Mn²⁺₂Fe³⁺₂Si₃₀O₉₀Cl · 6H₂O	Trig. 3 : R3
9.EG.65	Armbrusterite	K₅Na₇Mn₁₅[(Si₉O₂₂)₄](OH)₁₀ · 4H₂O	Mon. 2/m : B2/m
9.EG.70	Britvinite	[Pb₇(OH)₃F(BO₃)₂(CO₃)][Mg_4.5(OH)₃(Si₅O₁₄)]	Tric. 1 : P1
9.EG.70	Roymillerite	Pb₂₄Mg₉(Si₁₀O₂₈)(CO₃)₁₀(BO₃)(SiO₄)(OH)₁₃O₅	Tric. 1 : P1
9.EG.75	Bannisterite	(Ca,K,Na)(Mn²⁺,Fe²⁺)₁₀(Si,Al)₁₆O₃₈(OH)₈ · nH₂O	Mon. 2/m : B2/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 : B2/b

Other InformationHide

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

mindat.org URL:

https://www.mindat.org/min-2865.html
Please feel free to link to this page.

Search Engines:

Look for Naujakasite on Google

Look for Naujakasite images on Google

Look for Naujakasite on Bing

Look for Naujakasite images on Bing

Look for Naujakasite on DuckDuckGo

Look for Naujakasite images on DuckDuckGo

Look for Naujakasite in the Rock H. Currier Digital Library

External Links:

Look for Naujakasite on Webmineral

Look for Naujakasite on Wikipedia

Look for Naujakasite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Wilensky Exquisite Minerals

The Arkenstone - Fine Minerals

High-end worldwide specimens & outstanding customer service

Blue Gems Australian & International

Buy from David K Joyce minerals

Buy rare minerals from Excalibur Minerals

Buy from McDougall Minerals

References for NaujakasiteHide

Reference List:

Bøggild, O. B. (1933) Igalikite and Naujakasite, Two New Minerals from South Greenland. Meddelelser om Grønland Vol. 92 (9) C.A.Reitzelpp.1-12

(1935) New mineral names. American Mineralogist, 20 (2) 137-138

Petersen, Ole V. (1967) The Mineralogy of Naujakasite. Meddelelser om Grønland Vol. 181 (6) C.A.Reitzel

Fleischer, M. (1968) New mineral names. American Mineralogist, 53, 1775-1780.

Basso, R., A. Dal Negro, A. Della Guista, and L. Ungaretti (1975) The crystal structure of naujakasite. Geological Survey of Greenland, Report 116: 11-24.

Petersen, O.V. and S. Andersen (1975) The crystal habit of naujakasite. Geological Survey of Greenland, Report 116: 5-9.

Chemical Abstracts (1976): 84: 129188 (abstract).

Khalilov, A.D., N.K. Dzhafarov, and K.S. Mamedov (1977) Crystal structure of naujakasite - Na6{Fe2+[(Si;Al)8Si4O26]}: Dokl. Acad. Nauk Az. SSR, 33(7), 35{40 (in Russian).

Chemical Abstracts (1978): 88: 113658 (abstract).

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

Andersen, T. and H. Sørensen (2005) Stability of naujakasite in hyperagpaitic melts, and the petrology of naujakasite lujavrite in the Ilímaussaq alkaline complex, South Greenland. Mineralogical Magazine; April 2005; v. 69; no. 2; p. 125-136.

(2023) Naujakasite. Handbook of Mineralogy. Mineralogical Society of America

Localities for NaujakasiteHide

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.


Greenland
Kujalleq ⓘ Ilímaussaq complex	Petersen (2001) +1 other reference
ⓘ Kangerluarsuk Fjord	Christopher O'Neill specimen
ⓘ Kuannersuit Plateau (Kvanefjeld)	Chukanov (2014)
ⓘ Kvanefjeld deposit	Makovicky et al. (1980) +1 other reference
ⓘ Drill Core 49	Petersen et al. (2001)
ⓘ Kvanefjeld adit	O.T.Ljøstad specimen & photo
ⓘ Slope between Kvanefjeld Mt and Steenstrups Mt	Metcalf-Johansen (1977)
ⓘ Tunulliarfik Fjord	Vanrusselt (2023)
ⓘ Agpat (Appat)	Knut Edvard Larsen collection # 1135
ⓘ Naujakasik (Naajakasik) (TL)	Bøggild (1933)
ⓘ Tuperssuatsiat Bay	Danø et al. (1959)

Russia
Murmansk Oblast ⓘ Lovozero Massif	Mikhailova et al. (2023)

Naujakasite

About NaujakasiteHide

Unique IdentifiersHide

IMA Classification of NaujakasiteHide

Classification of NaujakasiteHide

Mineral SymbolsHide

Physical Properties of NaujakasiteHide

Optical Data of NaujakasiteHide

Chemistry of NaujakasiteHide

Crystallography of NaujakasiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of NaujakasiteHide

Other Language Names for NaujakasiteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for NaujakasiteHide

References for NaujakasiteHide

Localities for NaujakasiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide