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Pabstite

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Pacific Limestone Products quarry (Kalkar quarry), Santa Cruz, Santa Cruz Co., California, USA
© Knut Eldjarn

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Formula:
Ba(Sn,Ti)[Si
 
3
O
 
9
]
System:HexagonalColour:Colourless, white
Lustre:VitreousHardness:6
Name:
After Adolf Pabst (1899-1990), American mineralogist.


Benitoite Group. The tin analogue of Benitoite.

Classification of Pabstite

IMA status:Approved 1964
Strunz 8th edition ID:8/E.01-20
Nickel-Strunz 10th (pending) edition ID:9.CA.05

9 : SILICATES (Germanates)
C : Cyclosilicates
A : [Si3O9]6- 3-membered single rings (dreier-Einfachringe), without insular complex anions
Dana 8th edition ID:59.1.1.3

59 : CYCLOSILICATES Three-Membered Rings
1 : Three-Membered Rings, anhydrous, no other anions
Hey's CIM Ref.:14.12.4

14 : Silicates not Containing Aluminum
12 : Silicates of Sn
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Type Occurrence of Pabstite

Type Locality:Pacific Limestone Products quarry (Kalkar quarry), Santa Cruz, Santa Cruz Co., California, USA
Year of Discovery:1965

Physical Properties of Pabstite

Lustre:Vitreous
Colour:Colourless, white
Hardness (Mohs):6

Crystallography of Pabstite

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

Optical Data of Pabstite

Type:Uniaxial (-)
RI values: nω = 1.685 nε = 1.674
Maximum Birefringence:δ = 0.011

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Pabstite

Formula:
Ba(Sn,Ti)[Si
 
3
O
 
9
]
Essential elements:Ba, O, Si, Sn
All elements listed in formula:Ba, O, Si, Sn, Ti

Relationship of Pabstite to other Species

Member of Group:
Benitoite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
9.CA.05Bazirite
BaZr[Si
 
3
O
 
9
]
9.CA.05Benitoite
BaTi[Si
 
3
O
 
9
]
9.CA.10Wadeite
K
 
2
Zr[Si
 
3
O
 
9
]
9.CA.15Calciocatapleiite
CaZrSi
 
3
O
 
9
·2H
 
2
O
9.CA.15Catapleiite
Na
 
2
Zr[Si
 
3
O
 
9
]·2H
 
2
O
9.CA.20Pseudowollastonite
CaSiO
 
3
9.CA.25Margarosanite
Pb(Ca,Mn
2+
 
)
 
2
[Si
 
3
O
 
9
]
9.CA.25Walstromite
BaCa
 
2
[Si
 
3
O
 
9
]
9.CA.30Bobtraillite
(Na,Ca)
 
13
Sr
 
11
(Zr,Y,Nb)
 
14
[(Si
 
3
O
 
9
)
 
10
|(H
 
2
BSi
 
2
O
 
9
)
 
6
] · 12H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
14.12.1Brannockite
(K,Na)Li
 
3
Sn
 
2
Si
 
12
O
 
30
14.12.2Malayaite
CaSn[O|SiO
 
4
]
14.12.3Stokesite
CaSn[Si
 
3
O
 
9
] · 2H
 
2
O

Other Names for Pabstite

Synonyms:
IMA1964-022
Other Languages:
German:Pabstit
Russian:Пабстит
Spanish:Pabstita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Pabstite

Reference List:Gross, Eugene Bischoff, John E.N. Wainwright & B.W Evans (1965), Pabstite, the tin analogue of benitoite: American Mineralogist: 50: 1164-1169.

American Mineralogist (1984): 69: 358.

Neues Jahrbuch für Mineralogie, Monatshefte (1987): 16-30.

Internet Links for Pabstite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Pabstite details from Handbook of Mineralogy (PDF)
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    Localities for Pabstite

    Hide Locality List
    The 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. ? 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.
    Mexico
     
    • Baja California Norte
      • Tres Pozos
    Tajikistan
     
    • Region of Republican Subordination
      • Tien Shan Mts
        • Alai (Alayskiy) Range
    		http://webcenter.ru/~minbooks/ndm_38_cont.html
    USA
     
    • California
      • Santa Cruz Co.
        • Santa Cruz
    		Am Min 50:1164-1169
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 23rd Oct 2009 10:17:37