https://www.mineralbox.biz
https://www.mineraliengrosshandel.com
https://weloveminerals.com/
https://www.mineral-bosse.de
https://www.edelsteine-neuburg.de
'._('einklappen').'
 

Lawrencite

Collectors Summary

Color grünlich braun, weiß
Solubility +++ H2O, hygroskopisch, Aufbewahrung im versiegelten Behälter
Crystal System trigonal, R3m

Chemism

Chemical formula

(Fe2+,Ni)Cl2

Chemical composition

Chlor, Eisen, Nickel

Unit weight: 127.463655 u; Number of atoms in the formula: 3

Info

Empirical formula:

(Fe0.75Ni0.25)Cl2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Chlorine

Cl

55.63

2

66.67

35.4532000

70.9064000
Iron

Fe

32.86

0.75

25.00

55.8452000

41.8839000
Nickel

Ni

11.51

0.25

8.33

58.6934200

14.6733550

Strunz 9th edition incl. updates

3.AB.20

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

Lapis Classification

III/A.07-010

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

Classification by Hölzel

3.AB.240

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

Dana 8th edition

09.02.03.01

09: Halide Minerals
02: Anhydrous and Hydrated Halides where A (X)2

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

grünlich braun, weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.003~
Birefringence chart\! Lawrencite title=Birefringence chart Lawrencite

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

1.567

RI value γ / ε

1.57

Ri mean

1.568

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell parameters a (Å)

3.58

Cell parameters b (Å)

-

Cell parameters c (Å)

17.52

Cell parameters a/b or c/a

4.894

Cell parameters c/b

-

Z

3

Volume (ų)

194.46

X-Ray Powder Diffraction

5.9(60),
3.07(30),
2.54(100),
1.953(10),
1.800(60),
1.721(10),
1.467(20),
1.138(20)
XRD chart Lawrencite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.162

3.265 ( ρ calc. Mineralienatlas )

Instability

+++ H2O, hygroskopisch, Aufbewahrung im versiegelten Behälter

(Co-)Type locality

(Co-)Type locality

USA/Tennessee/Claiborne Co./Tazewell Meteorit

Preface

Author (Name, Year)

Daubrée, 1877

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 308

Other languages

German

Lawrencit

Spanish

Lawrencita

French

Lawrencite

English

Lawrencite

Russian

Лавренсит

Alternative Name

French

Chlorure de fer

German

Eisenchlorür

Fer muriat

Italian

Ferro muriato

CNMNC symbol

Symbol

Law

Locations with GPS information

IDs

GUSID (Global unique identifier short form) lQNK3HBvrE2Uz7ssFVJraw
GUID (Global unique identifier) DC4A0395-6F70-4DAC-94CF-BB2C15526B6B
Database ID 2159