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Jørgensenite

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About JørgenseniteHide

Formula:
Na2(Sr,Ba)14Na2Al12F64(OH,F)4
Colour:
Colourless
Lustre:
Vitreous
Hardness:
3½ - 4
Crystal System:
Monoclinic
Name:
For Vilhelm Jørgensen (1844–1925).
Compare jarlite.


Classification of JørgenseniteHide

Approved
Approval Year:
1995
3.CC.20

3 : HALIDES
C : Complex halides
C : Soro-aluminofluorides

Physical Properties of JørgenseniteHide

Vitreous
Colour:
Colourless
Streak:
White
Hardness:
3½ - 4 on Mohs scale

Optical Data of JørgenseniteHide

Type:
Biaxial (-)
RI values:
nα = 1.436 nβ = 1.442 nγ = 1.442
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
dispersion not observed

Chemical Properties of JørgenseniteHide

Formula:
Na2(Sr,Ba)14Na2Al12F64(OH,F)4
IMA Formula:
Na2Sr14Na2Al12F64(OH)4

Crystallography of JørgenseniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 16.059(7) Å, b = 10.974(4) Å, c = 7.277(3) Å
β = 101.70(3)°
Ratio:
a:b:c = 1.463 : 1 : 0.663
Unit Cell V:
1,255.79 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Prisms elongated along [010].
Comment:
SG C2/m.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.844 (8)
3.643 (9)
3.453 (10)
3.193 (10)
3.112 (9)
2.989 (9)
2.173 (9)

Type Occurrence of JørgenseniteHide

Synonyms of JørgenseniteHide

Other Language Names for JørgenseniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Weberite5 photos of Jørgensenite associated with Weberite on mindat.org.
Baryte5 photos of Jørgensenite associated with Baryte on mindat.org.
Muscovite2 photos of Jørgensenite associated with Muscovite on mindat.org.
Thomsenolite2 photos of Jørgensenite associated with Thomsenolite on mindat.org.
Fluorite2 photos of Jørgensenite associated with Fluorite on mindat.org.
Sericite2 photos of Jørgensenite associated with Sericite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

3.CC.05GearksutiteCa[Al(F,OH)5(H2O)]Tric. 1 : P1
3.CC.10AcuminiteSr[AlF4(OH)(H2O)]Mon. 2/m : B2/b
3.CC.10TikhonenkoviteSr[AlF4(OH)(H2O)]Mon. 2/m : P21/b
3.CC.15ArtroeitePb[AlF3(OH)2]Tric. 1 : P1
3.CC.20CalcjarliteNa(Ca,Sr)3Al3(OH)2F14Mon.
3.CC.20JarliteNa(Sr,Na)7MgAl6F32(OH,H2O)2Mon. 2/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.

References for JørgenseniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pauly, H., F.C. Hawthorne, P.C. Burns, and G.D. Ventura (1997) Jørgensenite, Na2(Sr, Ba)14Na2Al12F64(OH, F)4, a new aluminofluoride mineral from Ivigtut, Greenland. Can. Mineral., 35, 175–179.
Hawthorne, F.C. & Burns, P.C. (1997): The crystal structure of jørgensenite. Can. Mineral., 35, 1509-1513.
Mineralogical Record: 28: 485.

Internet Links for JørgenseniteHide

Localities for JørgenseniteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Denmark (TL)
 
  • Greenland
    • Sermersooq
      • Arsuk Fjord
        • Ivittuut (Ivigtut)
Can. Mineral., 35, 175–179
Mineral and/or Locality  
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