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Jarlite Mineral Data

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General Jarlite Information

Help on Chemical  Formula: Chemical Formula: Na(Sr,Na,[ ])7(Mg,[ ])Al6F32(OH,H2O)2
Help on Composition: Composition: Molecular Weight = 1,393.57 gm
   Barium      0.99 %  Ba    1.10 % BaO
   Sodium      3.30 %  Na    4.45 % Na2O
   Strontium  35.84 %  Sr   42.38 % SrO
   Lithium     0.10 %  Li    0.21 % Li2O
   Calcium     0.58 %  Ca    0.80 % CaO
   Magnesium   0.87 %  Mg    1.45 % MgO
   Aluminum   12.00 %  Al   22.68 % Al2O3
   Hydrogen    0.33 %  H     2.97 % H2O
   Oxygen      2.64 %  O
   Fluorine   43.35 %  F    43.35 % F
                -   %   F   -18.25 % -O=F2    
             ______        ______ 
             100.00 %      101.15 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaSr5.7NaCa0.2Li0.2Ba0.1Mg0.5Al6.2F31.8(H2O)2.3
Help on Environment: Environment: In vugs in a cryolite deposit with other fluorides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1933
Help on Locality: Locality: Ivigtut cryolite deposit, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Carl Frederik Jarl (1872-19510, Formerly President of the Danish Cryolite Company, who first noted the mineral.
Help on Name Pronunciation: Name Pronunciation: Jarlite Say JARLITE
Help on Synonym: Synonym: ICSD 40143
  PDF 5-594

Jarlite Image

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Comments: Tan radial botryoidal waxy masses of jarlite in matrix.
Location: Ivigtut, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jarlite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4732:1:0.6691
Help on Cell Dimensions: Cell Dimensions: a = 15.942, b = 10.821, c = 7.241, Z = 2; beta = 101.86° V = 1,222.47 Den(Calc)= 3.79
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.98(1), 3.19(0.9), 2.15(0.7),

Physical Properties of Jarlite

Help on Color: Color: Colorless, Gray white, White.
Help on Density: Density: 3.87
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Jarlite

Help on Optical Data: Optical Data: Biaxial (+/-), a=1.429, b=1.433, g=1.436, bire=0.0070, 2V(Calc)=80, 2V(Meas)=90.

Calculated Properties of Jarlite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.51 gm/cc
note: Specific Gravity of Jarlite =3.79 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEJarlite = 45.93 barns/electron
U=PEJarlite x rElectron Density= 161.02 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jarlite is Not Radioactive

Jarlite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.06)with miscellaneous formulae
  (11.06.10)Jarlite Group Jarlite Na(Sr,Na,[])7(Mg,[])Al6F32(OH,H2O)2 C 2/m 2/m Calcjarlite Na(Ca,Sr)3Al3(F,OH)16 C 2/m 2/m Jorgensenite! Na2(Sr,Ba)14Na2Al12F64(OH,F) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 03.CC.20 03 - HALIDES
  03.C - Complex Halides
  03.CC -Soro-aluminofluorides
03.CC.20 Calcjarlite Na(Ca,Sr)3Al3(F,OH)16 C 2/m 2/m
03.CC.20 Jarlite Na(Sr,Na,[])7(Mg,[])Al6F32(OH,H2O)2 C 2/m 2/m
03.CC.20 Jorgensenite! Na2(Sr,Ba)14Na2Al12F64(OH,F) C 2/m 2/m

Other Jarlite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Jarlite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Jarlite Specimen Label here :


Na(Sr,Na,[ ])7(Mg,[ ])Al6F32(OH,H2O)2
Dana No: Strunz No: 03.CC.20





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