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Finnemanite

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Finnemanit
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Finnemanit
braune Krusten von Finnemanit, Långban, Filipstad, Värmland, Schweden; BB ~ 1 cm, analysiert mittels REM-EDX und RAMAN
Copyright: Joy Desor; Contribution: openpit
Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Långban, Distrikt
Mineral: Finnemanite
Image: 1588314307
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Finnemanit  E
Analysed with energy dispersive X-ray spectroscopy EDX
R
Analysed with RAMAN spectroscopy

braune Krusten von Finnemanit, Långban, Filipstad, Värmland, Schweden; BB 1 cm, analysiert mittels REM-EDX und RAMAN

Copyright: Joy Desor
Contribution: openpit 2020-05-01
Locality: Långban, Distrikt / Filipstad, Gemeinde / Värmland, Provinz / Schweden

Collectors Summary

Color grauschwarz
Hardness (Mohs) 2.5
Crystal System hexagonal, P63/m

Chemism

Chemical formula

Pb5(As3+O3)3Cl

Chemical composition

Arsen, Blei, Chlor, Sauerstoff

Unit weight: 1440.262876 u; Number of atoms in the formula: 18

Info

Empirical formula:

Pb5(AsO3)3Cl

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

10.00

9

50.00

15.9994300

143.9948700

Chlorine

Cl

2.46

1

5.56

35.4532000

35.4532000

Arsenic

As

15.61

3

16.67

74.9216020

224.7648060

Lead

Pb

71.93

5

27.78

207.2100000

1,036.0500000

Analysis wt%

K2O : 0.44, PbO : 76.83, As2O3 : 20.54, Cl : 2.42 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

4.JB.45

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
J: Antimonite, Bismuthite, Sulfite, Selenite, Tellurite
B: [Arsenite], [Antimonite], [Bismuthite]; mit zusätzlichen [Anionen], ohne H20
45:Finnemanit-Gruppe

Lapis Classification

IV/J.03-010

IV: OXIDE
J: Arsenite (mit As3+)
3: Arsenite mit [AsO3] 3--Inseln

Classification by Hölzel

5.JB.300

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
J: Arsenites
B: Arsenites (+Anions -Water)

Dana 8th edition

46.01.01.01

46: Basic or Halogen-Containing Antimonites, Arsenites and Phosphites
01: Basic or Halogen-Containing Antimonites, Arsenites and Phosphites where (A B)m (XO3)p Zq

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

grauschwarz

max. Birefringence

0.010

Birefringence chart\! Finnemanite title=Birefringence chart Finnemanite

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

2.295

RI value γ / ε

2.285

Ri mean

2.292

2V angle

Uniaxial (-)

Crystallography

Crystal System

hexagonal

Class (H-M)

6/m

Space Group number

176

Space Group

P63/m

Cell parameters a (Å)

10.322

Cell parameters b (Å)

-

Cell parameters c (Å)

7.055

Cell parameters a/b or c/a

0.683

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

650.962

X-Ray Powder Diffraction

5.49(40),
3.35(60),
3.03(100),
2.88(90),
2.07(60),
1.957(50),
1.924(50),
1.352(50)

XRD chart Finnemanite

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)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

7.265 (gemessen)

7.347 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Aminoff, 1923

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 202

Other languages

German

Finnemanit

Spanish

Finnemanita

English

Finnemanite

French

Finnemanite

Russian

Финнеманит

Japanese

フィネマナイト

CNMNC symbol

Symbol

Fnn

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Awf4hugm0kCmDNTRdnFopQ
GUID (Global unique identifier) 86F80703-26E8-40D2-A60C-D4D1767168A5
Database ID 1226