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Chromceladonite

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Chromseladonit
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Chromseladonit
grüne, lagige Partien von Chromseladonit, Srednyaya Padma Mine, Velikaya Guba, Zaonezhie Halbinsel, Karelien, Russland; BB ~ 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Nordwestrussland, Föderationskreis/Karelien, Republik/Onegasee/Zaonezhie-Halbinsel/Velikaya Guba U-Lagerstätte/Srednyaya Padma U-V-Lagerstätte
Mineral: Chromceladonite
Image: 1584722490
License: Usage for Mineralienatlas project only
Chromseladonit

grüne, lagige Partien von Chromseladonit, Srednyaya Padma Mine, Velikaya Guba, Zaonezhie Halbinsel, Karelien, Russland; BB 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-20
Locality: Srednyaya Padma U-V-Lagerstätte / Velikaya Guba U-Lagerstätte / Zaonezhie-Halbinsel / Onegasee / Karelien, Republik / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color grün
Streak color hellgrün
Lustre Glasglanz, Seidenglanz
Hardness (Mohs) 1.00 - 2.00
Cleavages {001} vollkommen
Fracture schiefrig
Crystal System monoklin, C2

Chemism

Chemical formula

KMgCr[(OH)2|Si4O10]

Chemical composition

Chrom, Magnesium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 421.750704 u; Number of atoms in the formula: 21

Info

Empirical formula:

KMgCr[(OH)2Si4O10]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.48

2

9.52

1.0079470

2.0158940
Oxygen

O

45.52

12

57.14

15.9994300

191.9931600
Magnesium

Mg

5.76

1

4.76

24.3050600

24.3050600
Silicon

Si

26.64

4

19.05

28.0855300

112.3421200
Potassium

K

9.27

1

4.76

39.0983100

39.0983100
Chromium

Cr

12.33

1

4.76

51.9961600

51.9961600

Analysis wt%

SiO2 : 53.20, Al2O3 : 3.25, Cr2O3 : 17.01, V2O3 : 1.79, Fe2O3 : 0.58, FeO : 0.73, MgO : 7.82, K2O : 10.42, H2O : 3.38, F : 0.57 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 2000)

Strunz 9th edition incl. updates

9.EC.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
15:Muskovit-Gruppe

Lapis Classification

VIII/H.10-035

VIII: SILIKATE
H: Schichtsilikate
10: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Seladonit/Muskovit-Reihe (Phengite)

Classification by Hölzel

9.ED.350

9: SILICATES
E: Phyllosilicates
D: Biotite-Group

IMA status

anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

grün

Streak color

hellgrün

Lustre

Glasglanz, Seidenglanz

max. Birefringence

0.049
Birefringence chart\! Chromceladonite title=Birefringence chart Chromceladonite

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

1.648

RI value γ / ε

1.654

Ri mean

1.636

2V angle

Biaxial (-) 12°

Crystallography

Crystal System

monoklin

Class (H-M)

2

Space Group number

5

Space Group

C2

Cell parameters a (Å)

5.267

Cell parameters b (Å)

9.101

Cell parameters c (Å)

10.162

Cell parameters a/b or c/a

0.579

Cell parameters c/b

1.117

Cell parameters α

90°

Cell parameters β

100.67

Cell parameters γ

90°

Z

2

Volumne (ų)

478.693

X-Ray Powder Diffraction

4.54(90),
4.36(40),
3.638(60),
3.097(50),
2.588(100),
2.583(40),
2.409(90),
1.518(60)
XRD chart Chromceladonite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

1.00 - 2.00

VHN (Hardness Vickers)

24 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.9 (gemessen) 2.95 (berechnet)

2.926 ( ρ calc. Mineralienatlas )

Cleavages

{001} vollkommen

Fracture

schiefrig

Tenacity

flexibel, aber nicht elastisch

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Karelien, Republik/Onegasee/Zaonezhie-Halbinsel/Velikaya Guba U-Lagerstätte/Srednyaya Padma U-V-Lagerstätte

Preface

Author (Name, Year)

Pekov & Rumiantseva & Chukanov & Kabalov & Schneider & Ledeneva, 2000

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 129 (2000) (1), 38-44.

American Mineralogist 86 (2001), 376 (Zusammenfassung).

Other languages

French

Chromceladonite

English

Chromceladonite

German

Chromseladonit

Spanish

Cromceladonita

Russian

Хромселадонит

Alternative Name

German

Chromceladonit

Spanish

Chromceladonita

CNMNC (IMA)-Number

IMA 1999-024

CNMNC symbol

Symbol

Ccel

Locations with GPS information

IDs

GUSID (Global unique identifier short form) zqh8ya7KDUqk9qs8wZkG2w
GUID (Global unique identifier) C97CA8CE-CAAE-4A0D-A4F6-AB3CC19906DB
Database ID 749