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Chondrodite

Pictures (18 Images total)

Chondrodit
Views (File:
1303643220
): 3408
Chondrodit
Größe: 2,12 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: Chondrodite
Image: 1303643220
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Chondrodit

Größe: 2,12 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2011-04-24
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Chondrodit
Views (File:
1367052631
): 2481
Chondrodit
Ladjuar Medam (Lajur Madan), Kokcha Valley, Badakhshan, Afghanistan, Breite 19 mm
Copyright: Embarak; Contribution: Embarak
Collection: Embarak
Location: Afghanistan/Badachshan (Badakhshan; Badahsan), Provinz/Kuran va Munjan, Bezirk/Kokscha-Tal/Sar-e-Sang/Ladjuar Medam (Lajur Madan)
Mineral: Chondrodite
Image: 1367052631
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Chondrodit

Ladjuar Medam (Lajur Madan), Kokcha Valley, Badakhshan, Afghanistan, Breite 19 mm

Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2013-04-27
Locality: Ladjuar Medam (Lajur Madan) / Sar-e-Sang / Kokscha-Tal / Kuran va Munjan, Bezirk / Badachshan (Badakhshan; Badahsan), Provinz / Afghanistan
Chondrodit-Doppelender auf Klinochlor
Views (File:
1156662182
): 3649
Chondrodit-Doppelender auf Klinochlor
Fundort: Ladjuar Maden, Kokchar-Tal, Badakshan, Afghanistan
Copyright: Ibrahim Jameel; Contribution: Collector
Location: Afghanistan/Badachshan (Badakhshan; Badahsan), Provinz/Kuran va Munjan, Bezirk/Kokscha-Tal/Sar-e-Sang/Ladjuar Medam (Lajur Madan)
Mineral: Chondrodite
Image: 1156662182
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Chondrodit-Doppelender auf Klinochlor

Fundort: Ladjuar Maden, Kokchar-Tal, Badakshan, Afghanistan

Copyright: Ibrahim Jameel
Contribution: Collector 2006-08-27
Locality: Ladjuar Medam (Lajur Madan) / Sar-e-Sang / Kokscha-Tal / Kuran va Munjan, Bezirk / Badachshan (Badakhshan; Badahsan), Provinz / Afghanistan
Chondrodit
Views (File:
1284064174
): 2190
Chondrodit
Kristallgröße: 12 mm; Fundort: Tilly Foster Mine, Brewster, Putnam Co., New York, USA
Copyright: Rock Currier; Contribution: slugslayer
Location: USA/New York/Putnam Co./Brewster/Tilly Foster Mine
Mineral: Chondrodite
Image: 1284064174
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Chondrodit

Kristallgröße: 12 mm; Fundort: Tilly Foster Mine, Brewster, Putnam Co., New York, USA

Copyright: Rock Currier
Contribution: slugslayer 2010-09-09
Locality: Tilly Foster Mine / Brewster / Putnam Co. / New York / USA
Chondrodit und Spinell
Views (File:
1267278833
): 2816
Chondrodit und Spinell
Größe: 70x53 mm; Fundort: Khandjee, Koksha-Tal, Provinz Badakhshan, Afghanistan
Copyright: John Sobolewski; Contribution: slugslayer
Location: Afghanistan/Badachshan (Badakhshan; Badahsan), Provinz/Kuran va Munjan, Bezirk/Kokscha-Tal/Khandjee
Mineral: Chondrodite, Spinel
Image: 1267278833
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Chondrodit und Spinell

Größe: 70x53 mm; Fundort: Khandjee, Koksha-Tal, Provinz Badakhshan, Afghanistan

Copyright: John Sobolewski
Contribution: slugslayer 2010-02-27
Locality: Khandjee / Kokscha-Tal / Kuran va Munjan, Bezirk / Badachshan (Badakhshan; Badahsan), Provinz / Afghanistan
Chondrodit
Views (File:
1232722692
): 2183
Chondrodit
Größe: 8 x 5 mm; Fundort: Badakhshan, Afghanistan
Copyright: slugslayer; Contribution: slugslayer
Location: Afghanistan/Badachshan (Badakhshan; Badahsan), Provinz
Mineral: Chondrodite
Image: 1232722692
Rating: 6 (votes: 3)
License: Usage for Mineralienatlas project only
Chondrodit

Größe: 8 x 5 mm; Fundort: Badakhshan, Afghanistan

Copyright: slugslayer
Contribution: slugslayer 2009-01-23
Locality: Badachshan (Badakhshan; Badahsan), Provinz / Afghanistan

You find additional specimen at the Geolitho Museum

Collectors Summary

Color gelb, orange, bräunlich weiß, rötlichweiß, grünlichweiß
Streak color grau
Hardness (Mohs) 6.25
Solubility +++ HF, heiße H2SO4, ++ HCl, !Ultraschallbad
Crystal System monoklin, P21/a

Chemism

Chemical formula

Mg5(SiO4)2F2

Chemical composition

Magnesium, Silicium, Fluor, Sauerstoff

Unit weight: 343.6886065 u; Number of atoms in the formula: 17

Info

Empirical formula:

Mg5(SiO4)2F2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

37.24

8

47.06

15.9994300

127.9954400

Fluorine

F

11.06

2

11.76

18.9984033

37.9968065

Magnesium

Mg

35.36

5

29.41

24.3050600

121.5253000

Silicon

Si

16.34

2

11.76

28.0855300

56.1710600

Analysis wt%

SiO2 : 35.17, FeO : 0.71, MgO : 59.92, H2O : 1.91, F : 6.97 (Ref: American Mineralogist 70)

Strunz 9th edition incl. updates

9.AF.45

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
F: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in [4], [5] und/oder nur [6] Koordination
45:Chondrodit-Gruppe

Lapis Classification

VIII/B.04-020

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
4: Kationen in tetraedrischer oder oktaedrischer Koordination [4/6]; Humit-Gruppe

Classification by Hölzel

9.AI.310

9: SILICATES
A: Nesosilicates
I: Nesosilicates with OH
3: Chondrodite-Group

Dana 8th edition

52.03.02b.02

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
03: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
02b: Humite group (Chondrodite series)

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Humite polysomatic series

Optical Properties

Color

gelb, orange, bräunlich weiß, rötlichweiß, grünlichweiß

Streak color

grau

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.03~

Birefringence chart\! Chondrodite title=Birefringence chart Chondrodite

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

1.605

RI value β

1.615

RI value γ / ε

1.635

Ri mean

1.618

2V angle

Biaxial (+) 78°~

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich

LW-UV Intensity

sehr schwach

Color SW-UV (254nm)

 

gelb

SW-UV Intensity

stark

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

7.87

Cell parameters b (Å)

4.73

Cell parameters c (Å)

10.27

Cell parameters a/b or c/a

1.664

Cell parameters c/b

2.171

Cell parameters α

90°

Cell parameters β

109.3

Cell parameters γ

90°

Z

2

Volume (ų)

360.817

X-Ray Powder Diffraction

2.767(40),
2.677(60),
2.627(50),
2.519(50),
2.267(90),
2.261(100),
1.746(100),
1.487(50)

XRD chart Chondrodite

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)

6.25

VHN (Hardness Vickers)

850 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.1 - 3.2 / Durchschnittlich = 3.15

3.163 ( ρ calc. Mineralienatlas )

Instability

+++ HF, heiße H2SO4, ++ HCl, !Ultraschallbad

Preface

Author (Name, Year)

d'Ohsson, 1817

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 140

IMA group assignments


 
 
Mg5(SiO4)2F2
monoklin
P21/a

 
 
Mg9(SiO4)4F2
monoklin
P21/a

 
 
Mg7(SiO4)3(F,OH)2
orthorhombisch
Pbnm

 
 
Mg5(SiO4)2(OH)2
monoklin
P21/c

 
 
Mg9(SiO4)4(OH)2
monoklin
P21/a

 
 
Mg3(SiO4)F2
orthorhombisch
Pnam

Refresh list

Actuality: 20. Feb 2024 - 01:11:55

Other languages

German

Chondrodit

Spanish

Chondrodita

French

Chondrodite

English

Chondrodite

Russian

Хондродит

Simplified Chinese

粒硅镁石

Alternative Name

Brocchit

Brocchita

Brocchite

Brucite (of Gibbs)

Condrodit

Condrodita

Condrodite

Maclureite

Maclureite (of Nuttall)

Prolectit

Prolectita

Prolectite

CNMNC symbol

Symbol

Chn

Locations with GPS information

IDs

GUSID (Global unique identifier short form) UXdacR_-MU26Yy6EjNC4vA
GUID (Global unique identifier) 715A7751-FE1F-4D31-BA63-2E848CD0B8BC
Database ID 738