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Cuspidine

Pictures (22 Images total)

Cuspidin
Views (File:
1292116210
): 1260
Cuspidin
Größe: 2,28 mm, Fundort: Ariccia, Albaner Berge (Colli Albani), Rom, Provinz, Latium (Lazio), Region, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Rom, Provinz/Ariccia
Mineral: Cuspidine
Image: 1292116210
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Cuspidin

Größe: 2,28 mm, Fundort: Ariccia, Albaner Berge (Colli Albani), Rom, Provinz, Latium (Lazio), Region, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-12-12
Locality: Ariccia / Rom, Provinz / Latium (Lazio), Region / Italien
Cuspidin
Views (File:
1272298263
): 1830
Cuspidin
Größe: 9,08 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Cuspidine
Image: 1272298263
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Cuspidin

Größe: 9,08 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2010-04-26
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Cuspidin
Views (File:
1320836935
): 891
Cuspidin
Größe: 2,9 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Enrico Bonacina; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Cuspidine
Image: 1320836935
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Cuspidin

Größe: 2,9 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-11-09
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Cuspidin
Views (File:
1320836994
): 1416
Cuspidin
Größe: 2 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Enrico Bonacina; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Cuspidine
Image: 1320836994
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Cuspidin

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

Copyright: Enrico Bonacina
Contribution: Hg 2011-11-09
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Cuspidin
Views (File:
1297380861
): 1482
Cuspidin
Größe: 0,6 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Enrico Bonacina; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Cuspidine
Image: 1297380861
Rating: 7.67 (votes: 3)
License: Usage for Mineralienatlas project only
Cuspidin

Größe: 0,6 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-02-10
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 5.00 - 6.00
Solubility +++ Säuren, CH3COOH
Crystal System monoklin, P21/a

Chemism

Chemical formula

Ca4Si2O7(F,OH)2

Chemical composition

Calcium, Silicium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 365.481963375 u; Number of atoms in the formula: 15.5

Info

Empirical formula:

Ca4Si2O7(F0.75(OH)0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

0.5

3.23

1.0079470

0.5039735

Oxygen

O

32.83

7.5

48.39

15.9994300

119.9957250

Fluorine

F

7.80

1.5

9.68

18.9984033

28.4976049

Silicon

Si

15.37

2

12.90

28.0855300

56.1710600

Calcium

Ca

43.86

4

25.81

40.0784000

160.3136000

Analysis wt%

SiO2 : 31.39, R2O3 : 1.53, CaO : 59.16, F : 10.05, CO2 : 0.62, H2O : 0.44 (Ref: Hintze, Handbuch der Mineralogie, 1904-1974)

Strunz 9th edition incl. updates

9.BE.17

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
17:Cuspidin-Gruppe

Lapis Classification

VIII/C.09-010

VIII: SILIKATE
C: Gruppensilikate
9: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F)

Classification by Hölzel

9.BE.100

9: SILICATES
B: Sorosilicates
E: Cuspidine-Tilleyite-Group

Dana 8th edition

56.02.04.03

56: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O
02: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O with cations in [4] and/or >[4] coordination
04: Cuspidine - Wohlerite group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Wöhlerite group

Optical Properties

Color

farblos, weiß

Streak color

weiß

max. Birefringence

0.011

Birefringence chart\! Cuspidine title=Birefringence chart Cuspidine

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

1.591

RI value β

1.596

RI value γ / ε

1.602

Ri mean

1.596

2V angle

Biaxial (+) 76°

Optical Data Luminescence

Color LW-UV (365nm)

 

gelb

MW-UV (320nm)

 

lachsrosa

Color SW-UV (254nm)

 

orangegelb

SW-UV Intensity

mittel

LW-UV Other Colors

   

bläulich weiß, gelblich weiß

MW-UV Other Colors

   

blassrosa weiß, lachsrosa

SW-UV Other Colors

   

gelblich weiß, blassrosa weiß

Color SW-UV Afterglow (254nm)

 

orangegelb

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

10.93

Cell parameters b (Å)

10.57

Cell parameters c (Å)

7.57

Cell parameters a/b or c/a

1.034

Cell parameters c/b

0.716

Cell parameters α

90°

Cell parameters β

110.12

Cell parameters γ

90°

Z

4

Volume (ų)

821.192

X-Ray Powder Diffraction

3.363(10),
3.259(30),
3.062(100),
3.034(30),
2.943(40),
2.900(30),
2.873(30),
2.018(20)

XRD chart Cuspidine

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)

5.00 - 6.00

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.95 (gemessen)

2.956 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, CH3COOH

Preface

Author (Name, Year)

Scacchi, 1876

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 171

IMA group assignments


 
 
Ca3(Zr,Ti)Si2O9
monoklin
P21/c

 
 
Na2CaZrSi2O7F2
monoklin
P21/a

 
 
Ca4Si2O7(F,OH)2
monoklin
P21/a

 
 
(Na,Ca)4Ca8Zr2(Y,Zr,REE,Na)2(Si2O7)4(O3F5)
triklin
P1

 
 
Na4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5
triklin
P1

 
 
(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4
triklin
P1

 
 
(Na,Ca)3(Mn2+,Fe2+)3(Ti4+,Zr,Nb)2(Si2O7)2O2(OH,F)2
monoklin
P21/n

 
 
(Na,Ca)2(Mn,Fe2+)(Zr,Ti)Si2O7(O,OH,F)
monoklin
P21/a

 
 
Na2Ca2Fe2Zr2(Si2O7)2O2F2
monoklin
P21/a

 
 
NaCa6Zr(Si2O7)2OF3
triklin
P1

 
 
Ca7Nb(Si2O7)2O3F
monoklin
Pa

 
 
NaCa(Mn2+,Fe2+)(Ti,Nb,Zr)Si2O7(O,F)2
monoklin
P21/a

 
 
Na2Ca2Fe2Ti2(Si2O7)2O2F2
monoklin
P21/a

 
 
Na2Ca4Zr(Nb,Ti)(Si2O7)2(O,F)4
monoklin
P21

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Actuality: 11. Jul 2024 - 23:24:28

Other languages

German

Cuspidin

Spanish

Cuspidina

English

Cuspidine

French

Cuspidine

Russian

Куспидин

Simplified Chinese

枪晶石

Traditional Chinese

槍晶石

CNMNC symbol

Symbol

Csp

Locations with GPS information

IDs

GUSID (Global unique identifier short form) sm2lMfI8d0aFq12-VkYFhQ
GUID (Global unique identifier) 31A56DB2-3CF2-4677-85AB-5DBE56460585
Database ID 866