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Fluorocronite

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Fluorocronit
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Fluorocronit
weiße Massen von Fluorocronit, Kupol'noe, Sacha, Russland; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Ferner Osten, Föderationskreis/Sacha (Sakha, Jakutien, Якутия), Republik/Kupol'noe Ag-Sn-Lagerstätte
Mineral: Fluorocronite
Image: 1579804822
License: Usage for Mineralienatlas project only
Fluorocronit

weiße Massen von Fluorocronit, Kupol'noe, Sacha, Russland; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-01-23
Locality: Kupol'noe Ag-Sn-Lagerstätte / Sacha (Sakha, Jakutien, Якутия), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Cleavages vollkommen (111)
Solubility ++ H2O
Crystal System kubisch, Fm3m

Chemism

Chemical formula

PbF2

Additional chem. information

Blei analog von Fluorit

Chemical composition

Blei, Fluor

Unit weight: 245.2068065 u; Number of atoms in the formula: 3

Info

Empirical formula:

PbF2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Fluorine

F

15.50

2

66.67

18.9984033

37.9968065
Lead

Pb

84.50

1

33.33

207.2100000

207.2100000

Analysis wt%

Pb : 84.02, F : 15.90 (Ref: European Journal of Mineralogy 2011)

Strunz 9th edition incl. updates

3.AB.25

3: Halide (Fluoride, Chloride, Bromide, Iodide)
A: Einfache Halogenide ohne H2O
B: M:X = 1:2
25:Fluorit-Gruppe

Lapis Classification

III/A.08-022

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
A: Einfache Halogenide
8: Wasserfrei, Metall : Halogen = 1:2, 1:3

Classification by Hölzel

3.AB.150

3: HALIDES
A: Simple Halides without H2O
B: Me/X=1/2
1: Fluorite-Group

IMA status

anerkannt - CNMNC Newsletter, August 2010

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Fluorite Group

Optical Properties

max. Birefringence

0.000

RI value α / ω / n

1.766

RI value β

synth.

Ri mean

1.766

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

225

Space Group

Fm3m

Cell parameters a (Å)

5.931

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

208.633

X-Ray Powder Diffraction

3.437(100), 2.976(46), 2.103(44), 1.794(42),1.717(21), 1.366(20), 1.329(20), 1.214(19)
XRD chart Fluorocronite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

7.806 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen (111)

Instability

++ H2O

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Sacha (Sakha, Jakutien, Якутия), Republik/Kupol'noe Ag-Sn-Lagerstätte

Type material

Fersman Mineralogical Museum, Moscow, Russland

Collection number of type material

3987/1

Preface

Author (Name, Year)

Stuart J. Mills, Pavel M. Kartashov, Gennadii N. Gamyanin, Pamela S. Whitfield, Arnt Kern, Hugues Guerault, Anthony R. Kampf, Mati Raudsepp (2011)

References

Mills, S.J., Kartashov, P.M., Gamyanin, G.N., Whitfield, P.S., Kern, A., Guerault, H. and Raudsepp, M. (2010) Fluorocronite, IMA 2010-023. CNMNC Newsletter, August 2010, page 799; Mineralogical Magazine, 74, 797-800.

Stuart J. Mills, Pavel M. Kartashov, Gennadii N. Gamyanin, Pamela S. Whitfield, Arnt Kern, Hugues Guerault, Anthony R. Kampf, Mati Raudsepp: Fluorocronite, the natural analogue of β-PbF2, from the Sakha Republic, Russian Federation. Eur J Mineral Vol. 23 (2011) S. 695-700.

IMA group assignments

Other languages

German

Fluorocronit

English

Fluorocronite

Russian

Фторокронит

CNMNC (IMA)-Number

IMA 2010-023

CNMNC symbol

Symbol

Flc

IDs

GUSID (Global unique identifier short form) -EBHNPY5M0a42E70J8wIMg
GUID (Global unique identifier) 344740F8-39F6-4633-B8D8-4EF427CC0832
Database ID 6907