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Carnotite

Pictures (26 Images total)

Carnotit
Views (File:
1137956070
): 2917
Carnotit
Bildbreite: 6 mm; Fundort: Anderson Mine, Date Creek Basin,Arizona,USA
Copyright: Stephan Wolfsried; Contribution: JHM
Location: USA/Arizona/Yavapai Co./Date Creek Basin/Anderson Mine
Mineral: Carnotite
Image: 1137956070
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Carnotit

Bildbreite: 6 mm; Fundort: Anderson Mine, Date Creek Basin,Arizona,USA

Copyright: Stephan Wolfsried
Contribution: JHM 2006-01-22
Locality: Anderson Mine / Date Creek Basin / Yavapai Co. / Arizona / USA
Carnotit
Views (File:
1178807820
): 1532
Carnotit
Bildbreite: 3 mm; Fundort: Grube Clara, Wolfach, Schwarzwald
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Carnotite
Image: 1178807820
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Carnotit

Bildbreite: 3 mm; Fundort: Grube Clara, Wolfach, Schwarzwald

Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-10
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Carnotit
Views (File:
1214129985
): 2751
Carnotit
Bildbreite: 3 mm; Fundort: Anderson Mine, Date Creek Basin, Arizona, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Arizona/Yavapai Co./Date Creek Basin/Anderson Mine
Mineral: Carnotite
Image: 1214129985
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Carnotit

Bildbreite: 3 mm; Fundort: Anderson Mine, Date Creek Basin, Arizona, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2008-06-22
Locality: Anderson Mine / Date Creek Basin / Yavapai Co. / Arizona / USA
Carnotit
Views (File:
1269135312
): 3301
Carnotit
Bildbreite: 3 mm; Fundort: Oljeto Mesa, Goulding, Monumental District, Monument Valley, Utah, USA
Copyright: Stephan Wolfsried; Contribution: slugslayer
Location: USA/Utah/Monument Valley/Monument Valley District (Monumental District)/Goulding/Oljeto Mesa
Mineral: Carnotite
Image: 1269135312
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Carnotit

Bildbreite: 3 mm; Fundort: Oljeto Mesa, Goulding, Monumental District, Monument Valley, Utah, USA

Copyright: Stephan Wolfsried
Contribution: slugslayer 2010-03-21
Locality: Oljeto Mesa / Goulding / Monument Valley District (Monumental District) / Monument Valley / Utah / USA
Carnotit
Views (File:
1215359737
): 4008
Carnotit
Bildbreite: 2 mm; Fundort: Monument No. 2 Mine, Monument No. 2 channel, Monument Valley, Navajo Indian Reservation, Apache Co., Arizona, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Arizona/Apache Co./Indianerreservat Navajo-Nation/Monument Valley/Monument No. 2 channel/Monument No. 2 Mine
Mineral: Carnotite
Image: 1215359737
Rating: 8 (votes: 3)
License: Usage for Mineralienatlas project only
Carnotit

Bildbreite: 2 mm; Fundort: Monument No. 2 Mine, Monument No. 2 channel, Monument Valley, Navajo Indian Reservation, Apache Co., Arizona, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2008-07-06
Locality: Monument No. 2 Mine / Monument No. 2 channel / Monument Valley / Indianerreservat Navajo-Nation / Apache Co. / Arizona / USA
Carnotit
Views (File:
1214130037
): 2462
Carnotit
Bildbreite: 3 mm; Fundort: Anderson Mine, Date Creek Basin, Arizona, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Arizona/Yavapai Co./Date Creek Basin/Anderson Mine
Mineral: Carnotite
Image: 1214130037
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Carnotit

Bildbreite: 3 mm; Fundort: Anderson Mine, Date Creek Basin, Arizona, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2008-06-22
Locality: Anderson Mine / Date Creek Basin / Yavapai Co. / Arizona / USA

You find additional Carnotite specimen at the Geolitho Museum

Collectors Summary

Color kanariengelb
Streak color hellgelb
Lustre Perlmuttglanz
Hardness (Mohs) 2
Solubility +++ Säuren, - schnelles Tunken in Alkohol
Crystal System monoklin, P21/a
Morphology Kristalle klein, nadelig

Chemism

Chemical formula

K2(UO2)2(VO4)2·3H2O

Chemical composition

Kalium, Sauerstoff, Uran, Vanadium, Wasserstoff

Unit weight: 902.176598 u; Number of atoms in the formula: 27

Info

Empirical formula:

K2(UO2)2(VO4)2·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.67

6

22.22

1.0079470

6.0476820

Oxygen

O

26.60

15

55.56

15.9994300

239.9914500

Potassium

K

8.67

2

7.41

39.0983100

78.1966200

Vanadium

V

11.29

2

7.41

50.9415100

101.8830200

Uranium

U

52.77

2

7.41

238.0289130

476.0578260

Analysis wt%

UO3 : 62.26, V2O5 : 20.57, K2O : 10.00, CaO : 0.66, H2O : 4.90, Fe2O3 : 0.55 (Ref: American Mineralogist 49)

Strunz 9th edition incl. updates

4.HB.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
H: V[5,6] Vanadate
B: Uranyl-Gruppenvanadate (Sorovanadate)
05:Carnotit-Gruppe

Lapis Classification

VII/E.11-050

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
E: Uranyl-Phosphate/Arsenate und Uranyl-Vanadate mit [UO2] 2+- [PO4]/[AsO4] 3- und [UO2] 2+-[V2O8] 6-, sowie isotype Vanadate (Sincosit-Reihe)
11: Uranyl-Gruppenvanadate mit [UO2] 2+-[V2O8] 6-

Classification by Hölzel

8.EE.330

8: PHOSPHATES ARSENATES VANADATES
E: Uranyl (Phospates-Arsenates-Vanadates)
E: UranylVanadates
3: C large, V=1 Carnotite-Group

Dana 8th edition

40.02a.28.01

40: Hydrated Phosphates, etc
02a: Hydrated Phosphates, etc where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

kanariengelb

Streak color

hellgelb

Lustre

Perlmuttglanz

max. Birefringence

0.23

Birefringence chart\! Carnotite title=Birefringence chart Carnotite

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

1.750 - 1.78

RI value β

1.901 - 2.06

RI value γ / ε

1.92 - 2.08

Ri mean

1.917

2V angle

Biaxial (-) 40° - 60° (gemessen) 39.1 (berechnet)

Optical Data Luminescence

Color LW-UV (365nm)

 

grün

LW-UV Intensity

schwach

Color SW-UV (254nm)

 

grün

SW-UV Intensity

schwach

Most Common Activator

(UO2)2+ (Uranyl-Ion) spezifisch

Afterglow (Persistant Luminescence)

Mit bloßem Auge konnte keine Phosphoreszenz festgestellt werden.

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

10.47

Cell parameters b (Å)

8.41

Cell parameters c (Å)

6.91

Cell parameters a/b or c/a

1.245

Cell parameters c/b

0.822

Cell parameters α

90°

Cell parameters β

103.67

Cell parameters γ

90°

Z

2

Volumne (ų)

591.209

X-Ray Powder Diffraction

6.46(20),
6.36(100),
4.22(50),
3.530(80),
3.207(80),
3.140(50),
3.100(50),
2.544(50)

XRD chart Carnotite

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

Morphology

Kristalle klein, nadelig

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2

VHN (Hardness Vickers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.95 (gemessen) 4.91 (berechnet)

5.068 ( ρ calc. Mineralienatlas )

Radioactivity

Carnotit enthält Uran und ist daher radioaktiv!

Instability

+++ Säuren, - schnelles Tunken in Alkohol

Preface

Associations

Tyuyamunit und andere Uran- und Vanadiummineralien in Sandstein

Author (Name, Year)

Friedel & Cumengé, 1899

Relevance, Usage

Wegen seines hohen Uran Gehaltes ist Carnotit ein bedeutendes Mineral zur Urangewinnung.

Additional Information

Nicht für Kinderhände geeignet!!!

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 96

Varieties

Thallian Carnotite

Other languages

German

Carnotit

Spanish

Carnotita

English

Carnotite

French

Carnotite

Russian

Карнотит

Traditional Chinese

釩鉀鈾礦

Simplified Chinese

钒钾铀矿

Alternative Name

Carnotite (of Friedel and Cumenge)

Carnotite (of Friedel and Cumenge)

Traditional Chinese

釩酸鉀鈾礦

Simplified Chinese

钒酸钾铀矿

CNMNC symbol

Symbol

Cnt

Locations with GPS information