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Hydromolysite (Hydromolysit)

Collectors Summary

Color orangerot
Streak color gelborange
Solubility +++ H2O, hygroskopisch, Aufbewahrung im versiegelten Behälter
Crystal System monoklin, C2/m

Chemism

Chemical formula

Fe3+Cl3·6H2O

Chemical composition

Chlor, Eisen, Sauerstoff, Wasserstoff

Unit weight: 270.296744 u; Number of atoms in the formula: 22

Info

Empirical formula:

FeCl3·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

4.47

12

54.55

1.0079470

12.0953640
Oxygen

O

35.52

6

27.27

15.9994300

95.9965800
Chlorine

Cl

39.35

3

13.64

35.4532000

106.3596000
Iron

Fe

20.66

1

4.55

55.8452000

55.8452000

Strunz 9th edition incl. updates

3.BC.10

3: Halide (Fluoride, Chloride, Bromide, Iodide)
B: Einfache Halogenide mit H2O
C: M:X = 1:3
10:Hydromolysit-Gruppe

Lapis Classification

III/A.13-030

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
A: Einfache Halogenide
13: Wasserhaltig, Metall : Halogen = 1:1 bis 1:3

Classification by Hölzel

3.BC.140

3: HALIDES
B: Simple Halides with H2O
C: Me/X=1/3

IMA status

Diskreditiert von der CNMNC

Optical Properties

Color

orangerot

Streak color

gelborange

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

11.834

Cell parameters b (Å)

7.029

Cell parameters c (Å)

5.952

Cell parameters a/b or c/a

1.684

Cell parameters c/b

0.847

Cell parameters α

90°

Cell parameters β

100.47

Cell parameters γ

90°

Z

2

Volume (ų)

486.851

X-Ray Powder Diffraction

6.03(10),
5.866(80),
5.824(100),
4.412(10),
3.163(10),
2.909(10),
2.754(10),
2.442(10)
XRD chart Hydromolysite

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

Physical Properties

Density (g/cm³)

1.84 (berechnet)

1.844 ( ρ calc. Mineralienatlas )

Instability

+++ H2O, hygroskopisch, Aufbewahrung im versiegelten Behälter

Preface

Author (Name, Year)

Garavelli, 1958

References

Mineralogical Magazine 36 (1968), 1144

Other languages

Spanish

Hidromolisita

German

Hydromolysit

French

Hydromolysite

English

Hydromolysite

Alternative Name

Spanish

Hydromolysita

Locations with GPS information

IDs

GUSID (Global unique identifier short form) -XLUxJqNE0yg8ZSyBwIvmQ
GUID (Global unique identifier) C4D472F9-8D9A-4C13-A0F1-94B207022F99
Database ID 1671