Pabstite Mineral Data

Pabstite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment
Hudson Institute of Mineralogy

General Pabstite Information

Help on Chemical Formula: Chemical Formula: Ba(Sn,Ti)Si3O9
Help on Composition: Composition: Molecular Weight = 466.58 gm
   Barium    29.43 %  Ba   32.86 % BaO
   Titanium   2.57 %  Ti    4.28 % TiO2
   Silicon   18.06 %  Si   38.63 % SiO2
   Tin       19.08 %  Sn   24.23 % SnO2
   Oxygen    30.86 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaSn0.75Ti0.25Si3O9
Help on Environment: Environment: Recrystallized siliceous limestone with Sn sulfides.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Kalkar quarry, north of Santa Cruz, Santa Cruz Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Adolph Pabst (1899-1990), American mineralogist, University of California at Berekey
Help on Name Pronunciation: Name Pronunciation: Pabstite Say PABSTITE
Help on Synonym: Synonym: ICSD 10385
  PDF 43-633
 

Pabstite Image

Click Here for Larger Pabstite Image in a New Browser Window Images:
Click Here for Larger Pabstite Image

Pabstite

Comments: Pabstite grains in matrix. It is essentially the tin analog of benitoite with tin replacing titanium in the formula 3:1. Pabstite fluoresces under SW UV light as seen in the photo.
Location: Kalkar Quarry, Santa Cruz County, California, USA. Scale: 4.5 x 3 cm.
© John Veevaert

Pabstite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.4657
Help on Cell Dimensions: Cell Dimensions: a = 6.706, c = 9.829, Z = 2; V = 382.80 Den(Calc)= 4.05
Help on Crystal System: Crystal System: Hexagonal - Ditrigonal DipyramidalH-M Symbol (6 m2) Space Group: P 6c2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.77(1), 2.78(0.9), 3.37(0.5),
Click Here for Large Pabstite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Hawthorne F C , Neues Jahrbuch fur Mineralogie, Monatshefte , 1987 (1987) p.16-30, The crystal chemistry of the benitoite group minerals and, structural relations in (Si3O9) ring structures, Sample: occurs in small fractures and as scattered grains in, recrystallized siliceous limestone at Santa Cruz, Ca

 

Physical Properties of Pabstite

Help on Color: Color: Colorless, White.
Help on Density: Density: 4.03
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Fluorescent, Short UV=bright blue.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Pabstite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1678,KPDmeas= 0.1686,KC= 0.1739
Ncalc = 1.7
Help on Optical Data: Optical Data: Uniaxial (-), e=1.674, w=1.685, bire=0.0110.
 

Calculated Properties of Pabstite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.68 gm/cc
note: Specific Gravity of Pabstite =4.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEPabstite = 187.97 barns/electron
U=PEPabstite x rElectron Density= 691.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pabstite is Not Radioactive
 

Pabstite Classification
Help on Dana Class: Dana Class: 59.01.01.03 (59)Cyclosilicate Three-Membered Rings
  (59.01)anhydrous, no other anions
  (59.01.01)Benitoite group
 
59.01.01.01 Bazirite BaZrSi3O9 P 6m2 6 m2
 
59.01.01.02 Benitoite BaTiSi3O9 P 6c2 6 m2
 
59.01.01.03 Pabstite Ba(Sn,Ti)Si3O9 P 6c2 6 m2
 
59.01.01.04 Wadeite K2ZrSi3O9 P 63/m 6/m
Help on Strunz Class: Strunz Class: 09.CA.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CA -[Si3O9]6- 3-membered single rings (dreier-Einfachringe),
 
09.CA.05 Bazirite BaZrSi3O9 P 6m2 6 m2
 
09.CA.05 Benitoite BaTiSi3O9 P 6c2 6 m2
 
09.CA.05 Pabstite Ba(Sn,Ti)Si3O9 P 6c2 6 m2
 

Other Pabstite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Pabstite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Pabstite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Pabstite :

Dakota Matrix Minerals Google Search for Pabstite
Excalibur Mineral Corp. Google Search for Pabstite
John Betts Fine Minerals Search for Pabstite
McDougall Minerals Google Search for Pabstite
Mineral News Website Link
Rock and Mineral Shows Google Search for Pabstite
Weinrich Minerals, Inc. Google Search for Pabstite

Ask about Pabstite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Pabstite Specimen Label here :

Pabstite

Ba(Sn,Ti)Si3O9
Dana No: 59.01.01.03 Strunz No: 09.CA.05
Locality:

 

Notes: