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Redingtonite

Collectors Summary

Color weiß, hellviolett, hellpurpurfarben
Streak color weiß
Solubility +++ H2O

Chemism

Chemical formula

(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O

Chemical composition

Aluminium, Chrom, Eisen, Magnesium, Nickel, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 918.7429971 u; Number of atoms in the formula: 89

Info

Empirical formula:

(Fe0.6Mg0.3Ni0.1)(Cr0.75Al0.25)2(SO4)4·22H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

4.83

44

49.44

1.0079470

44.3496680
Oxygen

O

66.18

38

42.70

15.9994300

607.9783400
Magnesium

Mg

0.79

0.3

0.34

24.3050600

7.2915180
Aluminium

Al

1.47

0.5

0.56

26.9815382

13.4907691
Sulfur

S

13.96

4

4.49

32.0655000

128.2620000
Chromium

Cr

8.49

1.5

1.69

51.9961600

77.9942400
Iron

Fe

3.65

0.6

0.67

55.8452000

33.5071200
Nickel

Ni

0.64

0.1

0.11

58.6934200

5.8693420

Strunz 9th edition incl. updates

7.CB.85

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
85:Halotrichit-Gruppe

Lapis Classification

VI/C.12-050

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
12: Mittelgroße und sehr große Kationen; Halotrichit-Gruppe

Classification by Hölzel

7.CD.250

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
D: Sulfates, C medium + large
2: Halotrichite-Group

IMA status

Status fragwürdig

Optical Properties

Color

weiß, hellviolett, hellpurpurfarben

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

nicht wahrnehmbar

2V angle

Biaxial

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Cell parameters α

90°

Cell parameters β

nd

Cell parameters γ

90°

Physical Properties

Density (g/cm³)

1.761

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Napa Co./Knoxville/Redington Mine

Preface

Author (Name, Year)

Becker, 1888

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 583

Other languages

German

Redingtonit

Spanish

Redingtonita

English

Redingtonite

French

Redingtonite

CNMNC symbol

Symbol

Rdt

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 4LpKHAwPT0aAUmiEt2XmzA
GUID (Global unique identifier) 1C4ABAE0-0F0C-464F-8052-6884B765E6CC
Database ID 3233