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Fernandinite (Fernandinit)

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Fernandinit
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Fernandinit
grüngelbe Anflüge von Fernandinit, Sunday #2 Mine, Uravan, San Miguel County, Colorado, USA; BB ~ 3 mm
Copyright: Joy Desor; Contribution: openpit
Location: USA/Colorado/San Miguel Co./Slick Rock District/Sunday Mine Complex/Sunday No. 2 Mine
Mineral: Fernandinite
Image: 1592582713
License: Usage for Mineralienatlas project only
Fernandinit

grüngelbe Anflüge von Fernandinit, Sunday #2 Mine, Uravan, San Miguel County, Colorado, USA; BB 3 mm
Copyright: Joy Desor
Contribution: openpit 2020-06-19
Locality: Sunday No. 2 Mine / Sunday Mine Complex / Slick Rock District / San Miguel Co. / Colorado / USA

Collectors Summary

Hardness (Mohs) 2 - 3
Crystal System monoklin, C2/m

Chemism

Chemical formula

(Ca,Na,K)0.9(V5+,V4+,Fe2+,Ti)8O20·4H2O

Chemical composition

Calcium, Eisen, Natrium, Titan, Kalium, Sauerstoff, Vanadium, Wasserstoff

Unit weight: 833.643585854 u; Number of atoms in the formula: 40.9

Info

Empirical formula:

(Ca0.6Na0.3K0.1)0.9(V0.55V0.3Fe0.1Ti0.05)8O20·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.97

8

19.56

1.0079470

8.0635760
Oxygen

O

46.06

24

58.68

15.9994300

383.9863200
Sodium

Na

0.74

0.27

0.66

22.9897702

6.2072380
Potassium

K

0.42

0.09

0.22

39.0983100

3.5188479
Calcium

Ca

2.60

0.54

1.32

40.0784000

21.6423360
Titanium

Ti

2.30

0.4

0.98

47.8671000

19.1468400
Vanadium

V

41.55

6.8

16.63

50.9415100

346.4022680
Iron

Fe

5.36

0.8

1.96

55.8452000

44.6761600

Strunz 9th edition incl. updates

4.HE.20

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
H: V[5,6] Vanadate
E: Schichtvanadate (Phyllovanadate)
20:Straczekit-Gruppe

Lapis Classification

IV/G.11-035

IV: OXIDE
G: Vanadiumoxide (Polyvanadate mit V4+/5+)
11: Schichtvanadate, als typische Vanadiumbronzen

Classification by Hölzel

4.GA.810

4: OXIDES
G: Vanadin, Uranyl Oxides and Hydroxides
A: Vanadin Oxides and Hydroxides, VBronzes
8: Fibrous Bronzes Straczekite-Group

Hey's Chemical Index of Minerals

21.02.07

21: Vanadates (and vanadates with arsenate or phosphate)
02: Vanadates of Mg, Ca, Sr or Ba

Dana 8th edition

07.03.02.03

07: Multiple Oxides
03: Multiple Oxides with 2+ and higher charged cations

IMA status

Neudefinition anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

2V angle

Biaxial

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

11.680

Cell parameters b (Å)

3.654

Cell parameters c (Å)

11.023

Cell parameters a/b or c/a

3.196

Cell parameters c/b

3.017

Cell parameters α

90°

Cell parameters β

105.0

Cell parameters γ

90°

Z

1

Volumne (ų)

454.417

X-Ray Powder Diffraction

10.7(100),
3.545(10),
3.483(30),
2.826(10),
2.549(10),
2.136(10),
1.949(10),
1.836(10)
XRD chart Fernandinite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2 - 3

Density (g/cm³)

3.32 (berechnet)

3.046 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Peru/Pasco, Region/Pasco, Provinz/Huayllay, Distrikt/Ragra Mine (Minasragra)

Preface

Author (Name, Year)

Schaller, 1915

References

Canadian Mineralogist: 32: 339-351.

American Mineralogist: 80: 407.

Strunz Mineralogical Tables 9. Edition (2001), 260.

Other languages

German

Fernandinit

Spanish

Fernandinita

English

Fernandinite

French

Fernandinite

Russian

Фернандинит

CNMNC symbol

Symbol

Frn

Locations with GPS information