Jorgensenite Mineral Data

Jorgensenite Mineral Data +

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General Jorgensenite Information

Chemical Formula:

Na2(Sr,Ba)14Na2Al12F64(OH,F)

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

Empirical Formula:

Na₄14(Sr_0.75)14(Ba_0.25)Al₁₂F_64.25(OH)_0.75

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

Ivigtut, Greenland Link to MinDat.org Location Data.

Synonym:

IMA1995-046

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Jorgensenite Crystallography

Axial Ratios:

a:b:c =1.4625:1:0.6636

Cell Dimensions:

a = 16.046, b = 10.971, c = 7.281, Z = 1; beta = 101.734° V = 1,254.97 Den(Calc)= 4.04

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.193(1), 3.453(1), 3.643(0.9),

Crystal Structure:

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Hawthorne F C , Burns P C , The Canadian Mineralogist , 35 (1997) p.1509-1513, The crystal structure of jorgensenite

Physical Properties of Jorgensenite

Color:

Colorless, White.

Density:

3.89

Diaphaniety:

Translucent

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Jorgensenite

Gladstone-Dale:

CI meas= 0.209 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.239 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1089,KPDmeas= 0.1131,KC= 0.1431

Optical Data:

Biaxial (-), a=1.436, b=1.442, g=1.442, bire=0.0060

Calculated Properties of Jorgensenite

Electron Density:

r_electron=3.52 gm/cc
note: r_Jorgensenite=3.89 gm/cc.

Fermion Index

Fermion Index = 0.0492
Boson Index = 0.9508

Photoelectric:

PE_Jorgensenite= 105.59 barns/electron
U=PE_Jorgensenite x r_electron= 371.71 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Jorgensenite is Not Radioactive

Jorgensenite Classification

Dana Class:

11.6.10.3 (11)Halide Complexes; Alumino-fluorides

(11.6)with miscellaneous formulae

(11.6.10)Dana Group

11.6.10.1 Jarlite Na(Sr,Na,[])7(Mg,[])Al6F32(OH,H2O)2 C 2/m 2/m

11.6.10.2 Calcjarlite Na(Ca,Sr)3Al3(F,OH)16 C 2/m 2/m

11.6.10.3 Jorgensenite ! Na2(Sr,Ba)14Na2Al12F64(OH,F) C 2/m 2/m

Strunz Class:

III/B.03-48 III - Halogenides

III/B - Double halogenides without water, with [BF4]1-,[SiF6]2- and [AlF6]3-

III/B.03 - Kryolithionite - Calcjarlite series

III/B.03-10 Cryolithionite Na3Li3Al2F12 I a3d 4/m 3 2/m

III/B.03-20 Colquiriite CaLiAlF6 P 3c 3 2/m

III/B.03-25 Simmonsite! Na2LiAlF6 P 2₁/n 2/m

III/B.03-30 Cryolite Na3AlF6 P 2₁/n 2/m

III/B.03-40 Elpasolite K2NaAlF6 F m3m 4/m 3 2/m

III/B.03-45 Bogvadite Na2SrBa2Al4F20 Pnmn,Pn2n Ortho

III/B.03-48 Jorgensenite Na2(Sr,Ba)14Na2Al12F64(OH,F) C 2/m 2/m

III/B.03-50 Jarlite Na(Sr,Na,[])7(Mg,[])Al6F32(OH,H2O)2 C 2/m 2/m

III/B.03-60 Calcjarlite Na(Ca,Sr)3Al3(F,OH)16 C 2/m 2/m

Other Jorgensenite Information

References:

PHYS. PROP.(Am.Min.,Vol.82,p1261,1997) OPTIC PROP.(Am.Min.,Vol.82,p1261,1997)

See Also:

Links to other databases for Jorgensenite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST

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Jorgensenite

Na2(Sr,Ba)14Na2Al12F64(OH,F)
Dana No: 11.6.10.3 Strunz No: III/B.03-48
Locality:

Notes: