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Montesommaite

Pictures (6 Images total)

Montesommait
Views (Image: 1298100991): 1467, Rating: 8
Montesommait

Größe: 0,4 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-02-19
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Montesommait
Views (Image: 1245612772): 1062
Montesommait

Bildbreite: 2 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Stephan Wolfsried
Contribution: Hg 2009-06-21
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Montesommait
Views (Image: 1220041906): 886
Montesommait

Größe: 1,2 mm; Fundort: Pollena-Trocchia, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-08-29
Locality: Pollena-Trocchia / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Montesommait
Views (Image: 1278143196): 658
Montesommait

Bildbreite: 0,3 mm, Fundort: Pollena-Trocchia, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Luigi Mattei
Contribution: thdun5 2010-07-03
Locality: Pollena-Trocchia / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Montesommait
Views (Image: 1328190860): 659
Montesommait

Größe: 0,3 mm; Fundort: Pollena-Steinbrüche, Pollena-Trocchia, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2012-02-02
Locality: Pollena-Steinbrüche / Pollena-Trocchia / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
säuliger farbloser Montesommait
Views (Image: 1608979241): 96
säuliger farbloser Montesommait (SNr: B007811)

Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex, BB = 2,0 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2020-12-26
Locality: Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien

Collectors Summary

Color farblos
Streak color weiß
Cleavages keine
Fracture nicht genannt
Solubility +++ Säuren
Crystal System orthorhombisch, Fdd2

Chemism

Chem­ical formula

(K,Na)9(Si23Al9)O64·10H2O

Chem­ical com­po­si­tion

Aluminium, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 2408.55836925 u; Number of atoms in the formula: 135

Info

Empirical formula:

(K0.75Na0.25)9(Si23Al9)O64·10H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.84

20

14.81

1.0079470

20.1589400

Oxygen

O

49.16

74

54.81

15.9994300

1,183.9578200

Sodium

Na

2.15

2.25

1.67

22.9897702

51.7269830

Aluminium

Al

10.08

9

6.67

26.9815382

242.8338438

Silicon

Si

26.82

23

17.04

28.0855300

645.9671900

Potassium

K

10.96

6.75

5.00

39.0983100

263.9135925

Strunz 9th edi­tion incl. updates

9.GB.30

9: Silikate (Germanate)
G: Gerüstsilikate (Tektosilikate) mit zeolithischem H2O; Familie der Zeolithe
B: Ketten von einfach verbundenen vierer-Ringen
30:Montesommait-Gruppe

Lapis Clas­sifica­tion

VIII/J.25-075

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

Clas­sifica­tion by Hölzel

9.FK.340

9: SILICATES
F: Tektosilicates
K: Doubly connected 4-Ring Chains

Dana 8th edi­tion

77.01.03.12

77: Tektosilicates Tectosilicate Zeolite group
01: Tektosilicates Tectosilicate Zeolite group true zeolites
03: Gismondine and related species

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Zeolite group  ⇒ MON zeolite structure group

Optical Properties

Color

farblos

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.009

Birefringence chart\! Montesommaite title=Birefringence chart Montesommaite

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

1.498

RI value β

1.506

RI value γ / ε

1.507

Ri mean

1.504

2V angle

Biaxial (-) 35°~

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mm2

Space Group number

43

Space Group

Fdd2

Cell param­e­ters a (Å)

10.099

Cell param­e­ters b (Å)

10.099

Cell param­e­ters c (Å)

17.307

Cell param­e­ters a/b or c/a

1.000

Cell param­e­ters c/b

1.714

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

1

Volumne (ų)

1765.137

X-Ray Pow­der Diffrac­tion

6.589(70),
4.334(40),
3.299(100),
3.130(100),
2.797(30),
2.513(20),
2.347(20),
1.784(20)

XRD chart Montesommaite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.34

2.266 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

nicht genannt

Tenac­ity

zerbrechlich

Insta­bil­ity

+++ Säuren

Preface

Author (Name, Year)

Rouse & Dunn & Grice & Schlenker & Higgins, 1990

References

American Mineralogist 75 (1990), 1415

IMA group assignments



 
 
 
(K,Na)9(Si23Al9)O64·10H2O
orthorhombisch
Fdd2

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Actuality: 24. Jun 2022 - 22:34:12

Other languages

German

Montesommait

English

Montesommaite

French

Montesommaite

Spanish

Montesommaíta

Russian

Монтесоммаит

CNMNC (IMA)-Number

IMA 1988-038

CNMNC symbol

Symbol

Mtso

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Montesommait
Google-Bilder-Suche - search for: Montesommait
Mineralienatlas.de (Forum) - search for: Montesommait

English pages

Mindat - search for: Montesommaite
Webmineral - search for:Montesommaite
Handbook-of-Mineralogy - search for: Montesommaite
RRUFF - Raman, XRD and other mineral data - search for: Montesommaite
RRUFF - References and PDF downloads - search for: Montesommaite
American-Mineralogist-Crystal-Structure-Database - search for: Montesommaite
Strahlen.org - search for: Montesommaite

Russian pages

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Mineral Dealer

German pages

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Edelsteine Neuburg - Gundolf Fischer - search for: Montesommait

Locations with GPS information