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Rubicline

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Formula:
(Rb,K)AlSi3O8
System:
Triclinic
Colour:
Colourless
Lustre:
Vitreous
Name:
The name reflects its compositional and structural attributes as the rubidium analog of microcline.
Feldspar Group

Classification of Rubicline

Approved
9.FA.30

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
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Type Occurrence of Rubicline

Physical Properties of Rubicline

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colourless

Crystallography of Rubicline

Crystal System:
Triclinic

Optical Data of Rubicline

Type:
Biaxial
RI values:
nα = 1.520 nβ = 1.524 nγ = 1.527
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong

Chemical Properties of Rubicline

Formula:
(Rb,K)AlSi3O8
Essential elements:
All elements listed in formula:

Relationship of Rubicline to other Species

9.FA.05KaliophiliteKAlSiO4
9.FA.05KalsiliteKAlSiO4
9.FA.05Nepheline(Na,K)AlSiO4
9.FA.05Panunzite(K,Na)AlSiO4
9.FA.05Trikalsilite(K,Na)AlSiO4
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]
9.FA.05MegakalsiliteKAlSiO4
9.FA.10MalinkoiteNaBSiO4
9.FA.15VirgiliteLiAlSi2O6
9.FA.25LisitsyniteKBSi2O6
9.FA.30AdulariaKAlSi3O8
9.FA.30Anorthoclase(Na,K)AlSi3O8
9.FA.30Buddingtonite(NH4)AlSi3O8
9.FA.30CelsianBaAl2Si2O8
9.FA.30Hyalophane(K,Ba)[Al(Si,Al)Si2O8]
9.FA.30MicroclineKAlSi3O8
9.FA.30OrthoclaseKAlSi3O8
9.FA.30SanidineKAlSi3O8
9.FA.30MonalbiteNaAlSi3O8
9.FA.35AlbiteNaAlSi3O8
9.FA.35Andesine(Na,Ca)[Al(Si,Al)Si2O8]
9.FA.35AnorthiteCaAl2Si2O8
9.FA.35Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
9.FA.35Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
9.FA.35Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
9.FA.35ReedmergneriteNa[BSi3O8]
9.FA.40ParacelsianBaAl2Si2O8
9.FA.45SvyatoslaviteCaAl2Si2O8
9.FA.45KumdykoliteNaAlSi3O8
9.FA.50Slawsonite(Sr,Ca)Al2Si2O8
9.FA.55LisetiteCaNa2Al4Si4O16
9.FA.60BanalsiteBaNa2[Al2Si2O8]2
9.FA.60StronalsiteSrNa2[Al2Si2O8]2
9.FA.65DanburiteCaB2Si2O8
9.FA.65MaleeviteBaB2Si2O8
9.FA.65PekoviteSrB2Si2O8
9.FA.70Lingunite(Na,Ca)AlSi3O8
9.FA.75KokchetaviteKAlSi3O8

Other Names for Rubicline

Name in Other Languages:
German:Rubiklin

Other Information

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 Rubicline

Reference List:
American Mineralogist (1998): 83: 1335-1339.

Internet Links for Rubicline

Localities for Rubicline

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Manitoba
    • Red Cross Lake
Cerny et al. 2012; Černý, O., Teertstra, D.K., Chapman, R., Selway, J.B., Hawthorne, F.C., Ferreira, K., Chackowsky, L.E., Wang, X.J. & and Meintzer, R.E. (2012)
Finland
 
  • Southwestern Finland Region
    • Somero
Teertstra, D. K. ; Cerný, P. & Hawthorne, C. 1998. Rubidium-rich feldspars and associated minerals from the Luolamäki pegmatite, Somero, Finland. Bulletin of the Geological Society of Finland 70, 1-2, 43-49.
Italy (TL)
 
  • Tuscany
    • Livorno Province
      • Elba Island
        • Campo nell'Elba
D.K.Teertstra, P. Cerny, F.C. Hawthorne, J. Pier, L.M. Wang, C. Ewing (1998) - Rubicline, a new feldspar from San Piero in Campo, Elba, Italy - Am. Min., 83: 1335–1339.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Voron'i Tundry
Norman King
Sweden
 
  • Västerbotten
    • Skellefteå
Giorgio Bortolozzi specimen
Mineral and/or Locality  
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