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Pabstite

This page kindly sponsored by Michael J Pabst
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About PabstiteHide

Adolf Pabst
Formula:
Ba(Sn,Ti)(Si3O9)
Colour:
Colourless, white
Lustre:
Vitreous
Hardness:
6
Crystal System:
Hexagonal
Member of:
Name:
Named in honor of Adolf Pabst (30 November 1899, Chicago, Illinois, USA - 3 April 1990, Berkeley, California, USA), mineralogist. He served as president of the Mineralogical Society of America, the International Mineralogical Association, and the Crystallographic Society of America. He was awarded the 1965 Roebling Medal.
Benitoite Group. The tin analogue of Benitoite.


Classification of PabstiteHide

Approved
Approval Year:
1964
First Published:
1965
9.CA.05

9 : SILICATES (Germanates)
C : Cyclosilicates
A : [Si3O9]6- 3-membered single rings (dreier-Einfachringe), without insular complex anions
59.1.1.3

59 : CYCLOSILICATES Three-Membered Rings
1 : Three-Membered Rings, anhydrous, no other anions
14.12.4

14 : Silicates not Containing Aluminum
12 : Silicates of Sn

Physical Properties of PabstiteHide

Vitreous
Colour:
Colourless, white
Hardness:

Optical Data of PabstiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.685 nε = 1.674
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Comments:
RI is lower in less titanium rich material. see: Pautov, L. (2003): New Data on Minerals: 38: 15-19.

Chemical Properties of PabstiteHide

Formula:
Ba(Sn,Ti)(Si3O9)
IMA Formula:
BaSnSi3O9

Crystallography of PabstiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 6.7 Å, c = 9.82 Å
Ratio:
a:c = 1 : 1.466
Unit Cell V:
381.76 ų (Calculated from Unit Cell)

Type Occurrence of PabstiteHide

Synonyms of PabstiteHide

Other Language Names for PabstiteHide

German:Pabstit
Spanish:Pabstita

Relationship of Pabstite to other SpeciesHide

Member of:
Other Members of this group:
BaziriteBaZr(Si3O9)Hex.
BenitoiteBaTi(Si3O9)Hex. 6 m2 : P62c
WadeiteK2Zr(Si3O9)Hex.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tremolite2 photos of Pabstite associated with Tremolite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.CA.05BaziriteBaZr(Si3O9)Hex.
9.CA.05BenitoiteBaTi(Si3O9)Hex. 6 m2 : P62c
9.CA.10WadeiteK2Zr(Si3O9)Hex.
9.CA.15CalciocatapleiiteCaZr(Si3O9) · 2H2O
9.CA.15CatapleiiteNa2Zr(Si3O9) · 2H2OMon.
9.CA.20PseudowollastoniteCaSiO3Mon. 2/m : B2/b
9.CA.25MargarosanitePb(Ca,Mn2+)2(Si3O9)Tric. 1 : P1
9.CA.25WalstromiteBaCa2(Si3O9)Tric.
9.CA.30Bobtraillite(Na,Ca)13Sr11(Zr,Y,Nb)14(Si3O9)10(H2BSi2O9)6 · 12H2OTrig. 3m (3 2/m) : P3 1c

Related Minerals - Dana Grouping (8th Ed.)Hide

59.1.1.1BaziriteBaZr(Si3O9)Hex.
59.1.1.2BenitoiteBaTi(Si3O9)Hex. 6 m2 : P62c
59.1.1.4WadeiteK2Zr(Si3O9)Hex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.12.1Brannockite(K,Na)□2Li3(Sn,Zr,Ti)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
14.12.2MalayaiteCaSn(SiO4)OMon.
14.12.3StokesiteCaSn[Si3O9] · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna

Fluorescence of PabstiteHide

Bluish white in short-wave ultraviolet light.

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 PabstiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gross, E.G., Wainwright, J.E.N., Evans, B.W. (1965) Pabstite, the tin analogue of benitoite. American Mineralogist: 50: 1164-1169.
Choisnet, J., Deschanvres, A., Raveau, B. (1972) Sur de nouveaux germanates et silicates de type benitoite. Journal of Solid State Chemistry: 4: 209-218.
Alfors, John T.; Pabst, Adolf (1984) Titanian taramellites in western North America. American Mineralogist: 69: 358-373.
Hawthorne, F.C. (1987) The crystal chemistry of the benitoite group minerals and structural relations in (Si3O9) ring structures. Neues Jahrbuch für Mineralogie, Monatshefte: 1987: 16-30.
Pautov, L.A. (2003) Pabstite from the Dara-i-Poiz Moraine (Tadjikistan). New Data on Minerals. Moscow: 38: 15-19.

Internet Links for PabstiteHide

Localities for PabstiteHide

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.
Kyrgyzstan
 
  • Issyk-Kul Oblast (Ysyk-Köl Oblast)
    • Inyl'chek Range
      • Muzeinyi Valley
Pavel M. Kartashov data of 2014, L.A. Pautov specimen
Mexico
 
  • Baja California
    • Tres Pozos
Tajikistan
 
  • Districts of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
Pautov L.A. (2003) Pabstite from morain of gletcher Dara-i-Pioz. New data on minerals, 38,p. 5-8.
USA (TL)
 
  • California
    • Santa Cruz Co.
      • Santa Cruz
Gross, Eugene Bischoff & John E.N. Wainwright (1964), Barium-tin-titanium silicate having the benitoite structure (abstract): Geological Society of America, Cordilleran Section Meeting Program, Seattle, March 1964: 36; Gross, E.B., Wainwright, J.E.N., and Evans, B.W. (1965) Pabstite, the tin analogue of benitoite. American Mineralogist: 50: 1164-1169; Gross, E.B., Chesterman, C.W., Dunning, G.E., and Cooper, J.F. (1967) Mineralogy of the Kalkar quarry, Santa Cruz, California. California Division Mines and Geol. Special Report 92: 3-10; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 467.
Mineral and/or Locality  
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