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Stilbite-Na

Pictures (1 Images total)

Stilbit-Na von Puerto de Santiago, Teneriffa
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Stilbit-Na von Puerto de Santiago, Teneriffa
Blättige Kristalle in sternförmigem Aggregat in Olivin-Melilithit. Bildbreite 3,5mm
Copyright: Kurt Rüsenberg; Contribution: humboldt
Collection: humboldt
Location: Spanien/Kanarische Inseln/Teneriffa/Puerto de Santiago
Mineral: Stilbite-Na
Rock: Olivine-Nephelinite
Image: 1617281069
License: Usage for Mineralienatlas project only
Stilbit-Na von Puerto de Santiago, Teneriffa

Blättige Kristalle in sternförmigem Aggregat in Olivin-Melilithit. Bildbreite 3,5mm
Collection: humboldt
Copyright: Kurt Rüsenberg
Contribution: humboldt 2021-04-01
Locality: Puerto de Santiago / Teneriffa / Kanarische Inseln / Spanien

Collectors Summary

Color weiß, cremefarben, gelb, braun, rot
Streak color weiß
Lustre Glasglanz, Perlmuttglanz
Hardness (Mohs) 3.5 - 4
Crystal System monoklin, C2/m
Morphology Tafelige Kristalle (oft verzwillingt),typisch garbenförmige Büschel, radial, flache Endflächen

Chemism

Chemical formula

Na9(Si27Al9)O72·28H2O

Chemical composition

Aluminium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 2864.4391176 u; Number of atoms in the formula: 201

Info

Empirical formula:

Na9(Si27Al9)O72·28H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.97

56

27.86

1.0079470

56.4450320
Oxygen

O

55.86

100

49.75

15.9994300

1,599.9430000
Sodium

Na

7.22

9

4.48

22.9897702

206.9079318
Aluminium

Al

8.48

9

4.48

26.9815382

242.8338438
Silicon

Si

26.47

27

13.43

28.0855300

758.3093100

Strunz 9th edition incl. updates

9.GE.10

9: Silikate (Germanate)
G: Gerüstsilikate (Tektosilikate) mit zeolithischem H2O; Familie der Zeolithe
E: Tafeln mit 4-4-1-1 Struktureinheiten
10:Stilbit-Gruppe

Lapis Classification

VIII/J.23-026

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
23: Zeolith-Gruppe; Blätterzeolithe

Classification by Hölzel

9.FN.242

9: SILICATES
F: Tektosilicates
N: Heulandite-Group

Dana 8th edition

77.01.04.03a

77: Tektosilicates Tectosilicate Zeolite group
01: Tektosilicates Tectosilicate Zeolite group true zeolites
04: Heulandite and related species

IMA status

anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Zeolite group  ⇒ STI zeolite structure group  ⇒ Stilbite series

Optical Properties

Color

weiß, cremefarben, gelb, braun, rot

Streak color

weiß

Diaphaneity (Transparency)

transparent, durchscheinend

Lustre

Glasglanz, Perlmuttglanz

max. Birefringence

0.010 - 0.013

RI value α / ω / n

1.479 - 1.492

RI value β

1.485 - 1.500

RI value γ / ε

1.489 - 1.505

2V angle

Biaxial (-) 22° bis 79°, berechnet 76° bis 78°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

13.610

Cell parameters b (Å)

18.330

Cell parameters c (Å)

11.25

Cell parameters a/b or c/a

0.742

Cell parameters c/b

0.614

Cell parameters α

90°

Cell parameters β

127.7

Cell parameters γ

90°

Z

1

Volume (ų)

2220.61

X-Ray Powder Diffraction

Morphology

Tafelige Kristalle (oft verzwillingt),typisch garbenförmige Büschel, radial, flache Endflächen

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.5 - 4

Density (g/cm³)

2.1 - 2.2, Ø 2.15 (gemessen)

2.142 ( ρ calc. Mineralienatlas )

Radioactivity

keine

Chemical Properties and Tests

schwer löslich in Salzsäure

(Co-)Type locality

(Co-)Type locality

Italien/Sardinien (Sardegna), Region/Cagliari, Metropolitanstadt/Pula/Capo Pula

Preface

Occurrences

Auf Klüften und in Hohlräumen in einem stark verwitterten Andesit.

Rareness

selten

Author (Name, Year)

Coombs & u.w., 1998

References

Zeolites 7 (1987), 163

Slaughter, M. - Crystal structure of stilbite - American Mineralogist 55 (1970), 387-397. http://www.minsocam.org/ammin/AM55/AM55_387.pdf

Bulletin de Minéralogie 101 (1978), 368.

American Mineralogist 82 (1997), 729. http://www.minsocam.org/MSA/ammin/toc/Articles_Free/1997/Cruciani_p729-739_97.pdf

IMA group assignments

Other languages

Spanish

Estilbita-Na

German

Stilbit-Na

English

Stilbite-Na

French

Stilbite-Na

Russian

Стильбит-(Na)

Russian

Стильбит-Na

Alternative Name

Stilbit-(Na)

CNMNC symbol

Symbol

Stb-Na

Locations with GPS information

IDs

GUSID (Global unique identifier short form) QuJy3GHyakCmsfdy2rOw2Q
GUID (Global unique identifier) DC72E242-F261-406A-A6B1-F772DAB3B0D9
Database ID 3642