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Pabstite (Pabstit)

Pictures (1 Images total)

Pabstit
Views (File:
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Pabstit
Kalkar Quarry, Santa Cruz Co., Californien, USA. BB:6cm.
Copyright: Doc Diether; Contribution: Doc Diether
Location: USA/Kalifornien (California)/St. Cruz Co./Santa Cruz/Kalkar Quarry
Mineral: Pabstite
Image: 1571598935
License: Usage for Mineralienatlas project only
Pabstit

Kalkar Quarry, Santa Cruz Co., Californien, USA. BB:6cm.

Copyright: Doc Diether
Contribution: Doc Diether 2019-10-20
Locality: Kalkar Quarry / Santa Cruz / St. Cruz Co. / Kalifornien (California) / USA

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 6
Crystal System hexagonal, P6c2

Chemism

Chemical formula

Ba(Sn,Ti)Si3O9

Chemical composition

Barium, Silicium, Titan, Zinn, Sauerstoff

Unit weight: 466.57896 u; Number of atoms in the formula: 14

Info

Empirical formula:

Ba(Sn0.75Ti0.25)Si3O9

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

30.86

9

64.29

15.9994300

143.9948700

Silicon

Si

18.06

3

21.43

28.0855300

84.2565900

Titanium

Ti

2.56

0.25

1.79

47.8671000

11.9667750

Tin

Sn

19.08

0.75

5.36

118.7107000

89.0330250

Barium

Ba

29.43

1

7.14

137.3277000

137.3277000

Analysis wt%

SiO2 : 37.70, TiO2 : 3.80, SnO2 : 24.40, BaO : 33.20 (Ref: American Mineralogist 65)

Strunz 9th edition incl. updates

9.CA.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
A: ~[Si3O9]6- dreier-Einfachringe, ohne inselartig, komplexe [Anionen]
05:Walstromit-Gruppe

Lapis Classification

VIII/E.01-020

VIII: SILIKATE
E: Ringsilikate
1: Dreierringe [Si3O9] 6-

Classification by Hölzel

9.CA.130

9: SILICATES
C: Cyclosilicates
A: ~[Si3O9]6--Rings
1: Hexagonal, with Ti,Zr,Sn Benitoite-Group

Dana 8th edition

59.01.01.03

59: Cyclosilicate Minerals
01: Cyclosilicates Cyclosilicate Three-Membered Rings anhydrous, no other anions
01: Benitoite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.011

Birefringence chart\! Pabstite title=Birefringence chart Pabstite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.685

RI value γ / ε

1.674

Ri mean

1.681

2V angle

Uniaxial (-)

Optical Data Luminescence

Color LW-UV (365nm)



nicht fluoreszierend

Color SW-UV (254nm)

 

bläulich weiß

Afterglow (Persistant Luminescence)

keine Daten

Image ⇒ Luminescence ⇒ excitation ⇒ UV shortwave ~254nm (1 Images total)

Pabstit
Views (File:
1514997760
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Pabstit
links unter normalem Licht,rechts unter KW-UV; Kalkar Quarry,Santa Cruz Co./Californien USA; Bildbreite ca.6mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: USA/Kalifornien (California)/St. Cruz Co./Santa Cruz/Kalkar Quarry
Mineral: Pabstite
Image: 1514997760
License: Usage for Mineralienatlas project only
Pabstit

links unter normalem Licht,rechts unter KW-UV; Kalkar Quarry,Santa Cruz Co./Californien USA; Bildbreite ca.6mm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2018-01-03
Locality: Kalkar Quarry / Santa Cruz / St. Cruz Co. / Kalifornien (California) / USA

Crystallography

Crystal System

hexagonal

Class (H-M)

6m2

Space Group number

188

Space Group

P6c2

Cell parameters a (Å)

6.706

Cell parameters b (Å)

-

Cell parameters c (Å)

9.829

Cell parameters a/b or c/a

1.466

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

382.796

X-Ray Powder Diffraction

5.829(30),
4.910(10),
3.762(100),
3.363(30),
2.912(20),
2.775(90),
1.987(20),
1.807(20)

XRD chart Pabstite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.03 (gemessen)

4.048 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Gross & Wainwright & Evans, 1965

References

American Mineralogist 50 (1965), 1164

Other languages

German

Pabstit

Spanish

Pabstita

English

Pabstite

French

Pabstite

Russian

Пабстит

CNMNC (IMA)-Number

IMA 1964-022

CNMNC symbol

Symbol

Pab

Locations with GPS information

IDs

GUSID (Global unique identifier short form) mBi9L29zy0y0aVcA9Q5e5A
GUID (Global unique identifier) 2FBD1898-736F-4CCB-B469-5700F50E5EE4
Database ID 2880