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Stoppaniite

Pictures (3 Images total)

Stoppaniit
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Stoppaniit
Größe: 0,15 mm; Fundort: Capranica, Lago di Vico, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Ronciglione/Capranica
Mineral: Stoppaniite
Image: 1395740655
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Stoppaniit

Größe: 0,15 mm; Fundort: Capranica, Lago di Vico, Viterbo, Latium, Italien

Copyright: Matteo Chinellato
Contribution: Hg 2014-03-25
Locality: Capranica / Ronciglione / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Stoppaniit
Views (File:
1278142147
): 887
Stoppaniit
Kristallgröße: 0,25 mm, Fundort: Capranica, Lago di Vico, Viterbo, Latium, Italien
Copyright: Enrico Bonacina; Contribution: thdun5
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Ronciglione/Capranica
Mineral: Stoppaniite
Image: 1278142147
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Stoppaniit

Kristallgröße: 0,25 mm, Fundort: Capranica, Lago di Vico, Viterbo, Latium, Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-07-03
Locality: Capranica / Ronciglione / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Stoppaniit
Views (File:
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Stoppaniit
Bildbreite: 0,4 mm, Fundort: Capranica, Lago di Vico, Viterbo, Latium, Italien
Copyright: Luigi Chiappino; Contribution: thdun5
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Ronciglione/Capranica
Mineral: Stoppaniite
Image: 1278142033
License: Usage for Mineralienatlas project only
Stoppaniit

Bildbreite: 0,4 mm, Fundort: Capranica, Lago di Vico, Viterbo, Latium, Italien

Copyright: Luigi Chiappino
Contribution: thdun5 2010-07-03
Locality: Capranica / Ronciglione / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien

Collectors Summary

Color hellblau
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 7.5
Cleavages teilbar {001}
Fracture muschelig?
Crystal System hexagonal, P6/mcc

Chemism

Chemical formula

Fe3+2Be3Si6O18·H2O

Chemical composition

Beryllium, Eisen, Silicium, Sauerstoff, Wasserstoff

Unit weight: 613.2451909 u; Number of atoms in the formula: 32

Info

Empirical formula:

Fe2Be3Si6O18·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.33

2

6.25

1.0079470

2.0158940

Beryllium

Be

4.41

3

9.38

9.0121823

27.0365469

Oxygen

O

49.57

19

59.38

15.9994300

303.9891700

Silicon

Si

27.48

6

18.75

28.0855300

168.5131800

Iron

Fe

18.21

2

6.25

55.8452000

111.6904000

Analysis wt%

SiO2 : 60.37, Al2O3 : 4.89, Fe2O3 : 13.44, BeO : 13.88, MgO : 2.48, Na2O : 2.49, H2O : 3.03 (Ref: European Journal of Mineralogy 2000)

Strunz 9th edition incl. updates

9.CJ.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
J: ~[Si6O18]12- sechser-Einfachringe, ohne inselartig, komplexe [Anionen]
05:Beryll-Gruppe

Lapis Classification

VIII/E.12-025

VIII: SILIKATE
E: Ringsilikate
12: Sechserringe [Si6O18] 12-

Classification by Hölzel

9.CC.110

9: SILICATES
C: Cyclosilicates
C: ~[Si6O18]12--Rings Beryl-Group
1: est

Dana 8th edition

61.01.01.04

61: Cyclosilicates Cyclosilicate Six-Membered Rings
01: Cyclosilicates Cyclosilicate Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
01: Beryl group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Beryl group

Optical Properties

Color

hellblau

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.006

Birefringence chart\! Stoppaniite title=Birefringence chart Stoppaniite

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

1.625

RI value γ / ε

1.619

Ri mean

1.623

2V angle

Uniaxial (-)

Pleochroism

farblos zu hellblau

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

192

Space Group

P6/mcc

Cell parameters a (Å)

9.397

Cell parameters b (Å)

-

Cell parameters c (Å)

9.202

Cell parameters a/b or c/a

0.979

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

703.706

X-Ray Powder Diffraction

8.12(80),
4.60(10),
4.00(50),
3.278(100),
2.903(80),
2.553(30),
2.304(10),
1.752(30)

XRD chart Stoppaniite

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)

7.5

Density (g/cm³)

2.79 (gemessen) 2.849 (berechnet)

2.894 ( ρ calc. Mineralienatlas )

Cleavages

teilbar {001}

Fracture

muschelig?

Tenacity

spröde?

Preface

Author (Name, Year)

Ferraris & Prencipe & Rossi, 1998

References

European Journal of Mineralogy 12 (2000), 121

European Journal of Mineralogy 10 (1998), 491

IMA group assignments

 
 
 
 

 
 
NaAl4(Be5Li)(Si6O18)2(H2O)1-2
hexagonal
P6/mcc

 
 
Be3(Sc,Al)2Si6O18
hexagonal
P6/mcc

 
 
Be3Al2Si6O18
hexagonal
P6/mcc

 
 
Mg2Al4Si5O18
orthorhombisch
Cccm

 
 
(Fe2+,Mg)2Al4Si5O18
hexagonal
P6/mcc

 
 
Mg2Al4Si5O18
hexagonal
P6/mcc

 
 
Cs[Be2B]Mg2Si6O18
hexagonal
P6/mcc

 
 
Cs(Be2Li)Al2Si6O18
trigonal
R3c

 
 
(Fe2+,Mg)2Al4Si5O18
orthorhombisch
Cccm

 
 
Fe3+2Be3Si6O18·H2O
hexagonal
P6/mcc

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Actuality: 16. May 2024 - 03:59:51

Other languages

German

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English

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Spanish

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Russian

Стоппаниит

CNMNC (IMA)-Number

IMA 1996-008

CNMNC symbol

Symbol

Spp

IDs

GUSID (Global unique identifier short form) to9anh212kSVMu_jaOrdwg
GUID (Global unique identifier) 9E5A8FB6-B51D-44DA-9532-EFE368EADDC2
Database ID 3652