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Giuseppettite

Pictures (3 Images total)

Giuseppettit
Views (Image: 1276882565): 1366
Giuseppettit

Bildbreite: 10 mm, Fundort: Biachella-Tal, Sacrofano, Latium, Italien

Copyright: Luigi Chiappino
Contribution: thdun5 2010-06-18
Locality: Biachella-Tal / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien
Giuseppettit
Views (Image: 1393262320): 689
Giuseppettit (SNr: A013272)

Dicktafeliger farbloser Kristall mit Pyroxen, BB = 3,8 mm, Fundort: Biachella-Tal, Sacrofano, Latium, Italien.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-02-24
Locality: Biachella-Tal / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien
Giuseppettit
Views (Image: 1639924036): 93
Giuseppettit

Valle Biachella, Sacrofano, Prov. Roma, Latium, Italien; Bildbreite ca. 6 mm; Sammlungsbestand # 3618)

Collection: Hans-Jürgen Haas
Copyright: Hans-Jürgen Haas
Contribution: sulzbacher 2021-12-19
Locality: Biachella-Tal / Sacrofano-Caldera / Sacrofano / Rom, Provinz / Latium (Lazio), Region / Italien

Collectors Summary

Color blauviolett
Streak color weiß
Hardness (Mohs) 6.00 - 7.00
Solubility +++ Säuren
Crystal System trigonal, P31c

Chemism

Chem­ical formula

Na42K16Ca6Si48Al48O192(SO4)10Cl2·5H2O

Chem­ical com­po­si­tion

Aluminium, Calcium, Chlor, Natrium, Silicium, Kalium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 8668.338762 u; Number of atoms in the formula: 419

Info

Empirical formula:

Na42K16Ca6Si48Al48O192(SO4)10Cl2·5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.12

10

2.39

1.0079470

10.0794700

Oxygen

O

43.74

237

56.56

15.9994300

3,791.8649100

Sodium

Na

11.14

42

10.02

22.9897702

965.5703484

Aluminium

Al

14.94

48

11.46

26.9815382

1,295.1138336

Silicon

Si

15.55

48

11.46

28.0855300

1,348.1054400

Sulfur

S

3.70

10

2.39

32.0655000

320.6550000

Chlorine

Cl

0.82

2

0.48

35.4532000

70.9064000

Potassium

K

7.22

16

3.82

39.0983100

625.5729600

Calcium

Ca

2.77

6

1.43

40.0784000

240.4704000

Anal­y­sis wt%

SiO2 : 33.25, Al2O3 : 28.56, CaO : 4.85, Na2O : 14.37, K2O : 8.00, SO3 : 9.92, Cl : 0.78 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) 81)

Strunz 9th edi­tion incl. updates

9.FB.05

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
B: Gerüstsilikate (Tektosilicates) mit weiteren [Anionen]
05:Cancrinit-Gruppe

Lapis Clas­sifica­tion

VIII/J.09-043

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
9: Mit tetraederfremden Anionen; Cancrinit-Gruppe

Clas­sifica­tion by Hölzel

9.FE.730

9: SILICATES
F: Tektosilicates
E: Hexagonal or trigonal with other Anions
7: Giuseppettite-Group - trigonal, axis a~~12A and c=n*~~5A, n>5

Dana 8th edi­tion

76.02.05.07

76: Tektosilicates Tectosilicate Al-Si Framework
02: Tektosilicates Tectosilicate Al-Si Framework Feldspathoids and related species
05: Cancrinite group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Zeolite group  ⇒ GIU zeolite structure group

Optical Properties

Color

blauviolett

Streak color

weiß

max. Birefrin­gence

0.016

Birefringence chart\! Giuseppettite title=Birefringence chart Giuseppettite

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

1.491

RI value γ / ε

1.507

Ri mean

1.496

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

159

Space Group

P31c

Cell param­e­ters a (Å)

12.856

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

42.256

Cell param­e­ters a/b or c/a

3.287

Cell param­e­ters c/b

-

Z

1

Volumne (ų)

6048.264

X-Ray Pow­der Diffrac­tion

6.42(60),
4.318(50),
3.712(100),
3.446(80),
3.285(50),
3.126(70),
2.640(60),
2.141(60)

XRD chart Giuseppettite

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)

6.00 - 7.00

VHN (Hard­ness Vick­ers)

960 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.35 (gemessen)

2.38 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Säuren

Preface

Author (Name, Year)

Mazzi & Tadini, 1981

References

Microporous and Mesoporous Materials 73 (2004), 129

IMA group assignments



 
 
 
Na42K16Ca6Si48Al48O192(SO4)10Cl2·5H2O
trigonal
P31c

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Actuality: 18. Jun 2022 - 23:21:04

Other languages

German

Giuseppettit

Spanish

Giuseppettita

English

Giuseppettite

French

Giuseppettite

Russian

Джузеппеттит

Traditional Chinese

久矽鋁鈉石

Simplified Chinese

久硅铝钠石

CNMNC (IMA)-Number

IMA 1979-064

CNMNC symbol

Symbol

Giu

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