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Jorgensenite Mineral Data

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General Jorgensenite Information

Help on Chemical  Formula: Chemical Formula: Na2(Sr,Ba)14Na2Al12F64(OH,F)
Help on Composition: Composition: Molecular Weight = 3,049.79 gm
   Barium     15.76 %  Ba   17.60 % BaO
   Sodium      3.02 %  Na    4.06 % Na2O
   Strontium  30.17 %  Sr   35.67 % SrO
   Aluminum   10.62 %  Al   20.06 % Al2O3
   Hydrogen    0.02 %  H     0.22 % H2O
   Oxygen      0.39 %  O
   Fluorine   40.02 %  F    40.02 % F
                -   %   F   -16.85 % -O=F2    
             ______        ______ 
             100.00 %      100.79 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na414(Sr0.75)14(Ba0.25)Al12F64.25(OH)0.75
Help on Environment: Environment: In vugs and as fissure fillings in a cryolite deposit with other fluorides.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: Ivigtut cryolite deposit, Greenland Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Vilhelm J�rgensen (1844-1925), cofounder, in 1870, of the cryolite factory at Ivigtut, Greenland.
Help on Name Pronunciation: Name Pronunciation: Jorgensenite + Pronunciation Say JORGENSENITE
Help on Synonym: Synonym: IMA1995-046

Jorgensenite Image

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  Jorgensenite   Weberite

Comments: SEM image of polished section of aluminofluoride vein mounted in epoxy. Bladed jorgensenite (Jor), barite (Bar) and weberite (Web) with minor quartz, bøgvadite, schorl, pyrite, galena, chalcopyrite and chalcocite.
Location: Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland. Scale: See Image.
© Pavel M. Kartashov

Jorgensenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4625:1:0.6636
Help on Cell Dimensions: Cell Dimensions: a = 16.046, b = 10.971, c = 7.281, Z = 1; beta = 101.734° V = 1,254.97 Den(Calc)= 4.04
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): 3.193(1), 3.453(1), 3.643(0.9),

Physical Properties of Jorgensenite

Help on Color: Color: Colorless, White.
Help on Density: Density: 3.89
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Jorgensenite

Help on Optical Data: Optical Data: Biaxial (-), a=1.436, b=1.442, g=1.442, bire=0.0060

Calculated Properties of Jorgensenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.66 gm/cc
note: Specific Gravity of Jorgensenite =4.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEJorgensenite = 105.59 barns/electron
U=PEJorgensenite x rElectron Density= 386.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jorgensenite is Not Radioactive

Jorgensenite 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 Jorgensenite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.82,p1261,1997) OPTIC PROP.(Am.Min.,Vol.82,p1261,1997)
Help on See Also: See Also: Links to other databases for Jorgensenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 03.CC.20





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