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Molysite

Pictures (1 Images total)

Molysit
Views (File:
1704134810
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Molysit
Bräunlichgelbe Molysit-Krusten (auf unbest. Min; ohne Maßstab), FO: Larderello, Pomarance, Provinz Pisa, Toscana, Italien. Ex Van den Broucke Sammlung (sh.: https://www.mindat.org/mesg-560223.html).
Copyright: Wikipedia-user: David Hospital; Contribution: oliverOliver
Location: Italien/Toskana (Toscana)/Pisa, Provinz/Pomarance/Larderello
Mineral: Molysite
Image: 1704134810
License: Creative Commons - Attribution-ShareAlike 4.0 International  (CC BY-SA) V.4.0
Molysit

Bräunlichgelbe Molysit-Krusten (auf unbest. Min; ohne Maßstab), FO: Larderello, Pomarance, Provinz Pisa, Toscana, Italien. Ex Van den Broucke Sammlung (sh.: https://www.mindat.org/mesg-560223.html).

Copyright: Wikipedia-user: David Hospital
Contribution: oliverOliver 2024-01-01
Locality: Larderello / Pomarance / Pisa, Provinz / Toskana (Toscana) / Italien

Collectors Summary

Color bräunlich rot, gelb, purpurrot
Streak color bräunlich gelb
Solubility +++ H2O, Aufbewahrung im versiegelten Behälter
Crystal System trigonal, R3

Chemism

Chemical formula

Fe3+Cl3

Chemical composition

Chlor, Eisen

Unit weight: 162.2048 u; Number of atoms in the formula: 4

Info

Empirical formula:

FeCl3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Chlorine

Cl

65.57

3

75.00

35.4532000

106.3596000

Iron

Fe

34.43

1

25.00

55.8452000

55.8452000

Strunz 9th edition incl. updates

3.AC.10

3: Halide (Fluoride, Chloride, Bromide, Iodide)
A: Einfache Halogenide ohne H2O
C: M:X = 1:3
10:Molysit-Gruppe

Lapis Classification

III/A.09-010

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

Classification by Hölzel

3.AC.100

3: HALIDES
A: Simple Halides without H2O
C: Me/X=1/3

Dana 8th edition

09.03.01.01

09: Halide Minerals
03: Anhydrous and Hydrated Halides

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

bräunlich rot, gelb, purpurrot

Streak color

bräunlich gelb

RI value α / ω / n

1.6

RI value γ / ε

1.6

Ri mean

1.6~

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

5.92

Cell parameters b (Å)

-

Cell parameters c (Å)

17.26

Cell parameters a/b or c/a

2.916

Cell parameters c/b

-

Z

6

Volume (ų)

523.86

X-Ray Powder Diffraction

5.9(30),
5.1(10),
4.79(10),
2.68(100),
2.08(40),
1.75(30),
1.67(10),
1.63(20)

XRD chart Molysite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.904

3.085 ( ρ calc. Mineralienatlas )

Instability

+++ H2O, Aufbewahrung im versiegelten Behälter

Preface

Author (Name, Year)

Dana, 1868

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 378

Other languages

Spanish

Molisita

German

Molysit

French

Molysite

English

Molysite

Russian

Молизит

Alternative Name

German

Eisenchlorid

Molisite

Molysita

Stagmatite

CNMNC symbol

Symbol

My

Locations with GPS information

IDs

GUSID (Global unique identifier short form) WOXrPOI3UUqU6Si67mCn9A
GUID (Global unique identifier) 3CEBE558-37E2-4A51-94E9-28BAEE60A7F4
Database ID 2573