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Calderite (Calderit)

Pictures (2 Images total)

Calderit
Views (File:
1257852977
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Calderit
Bildbreite: 3,4 cm, Fundort: Otjosondu, Otjozondjupa Region, Namibia.
Copyright: Dan Weinrich; Contribution: thdun5
Location: Namibia/Otjozondjupa, Region/Otjosondu
Mineral: Calderite
Image: 1257852977
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Calderit

Bildbreite: 3,4 cm, Fundort: Otjosondu, Otjozondjupa Region, Namibia.
Copyright: Dan Weinrich
Contribution: thdun5 2009-11-10
Locality: Otjosondu / Otjozondjupa, Region / Namibia
Calderit
Views (File:
1332944316
): 1625
Calderit
Vielflächige braune Kristalle, BB = 3 cm, Fundort: Otjosondu, Otjozondjupa Region, Namibia.
Copyright: Heribert Rotter; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: B001952, Donator: Melanie Albert
Location: Namibia/Otjozondjupa, Region/Otjosondu
Mineral: Calderite
Image: 1332944316
License: Usage for Mineralienatlas project only
Calderit (SNr: B001952)

Vielflächige braune Kristalle, BB = 3 cm, Fundort: Otjosondu, Otjozondjupa Region, Namibia.
Collection: Lithothek der Münchener Micromounter
Copyright: Heribert Rotter
Contribution: Münchener Micromounter 2012-03-28
Locality: Otjosondu / Otjozondjupa, Region / Namibia

You find additional Calderit specimen at the Geolitho Museum

Collectors Summary

Color dunkel gelb, rötlich gelb
Streak color weiß
Crystal System kubisch, Ia3d
Morphology kubisch

Chemism

Chemical formula

{Mn2+3}[Fe3+2](Si3)O12

Chemical composition

Eisen, Mangan, Silicium, Sauerstoff

Unit weight: 552.7542997 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Mn3}[Fe2](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

34.73

12

60.00

15.9994300

191.9931600
Silicon

Si

15.24

3

15.00

28.0855300

84.2565900
Manganese

Mn

29.82

3

15.00

54.9380499

164.8141497
Iron

Fe

20.21

2

10.00

55.8452000

111.6904000

Strunz 9th edition incl. updates

9.AD.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
D: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] und gewöhnlich größerer Koordination
25:Granat-Gruppe

Lapis Classification

VIII/A.08-040

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
8: Kationen in kubischer und oktaedrischer Koordination [8+6]; Granat-Gruppe

Classification by Hölzel

9.AC.150

9: SILICATES
A: Nesosilicates
C: Garnet-Group
1: Pyralspites - 8-coord. Mg, Fe(2+), Mn(2+); Pyrope - Spessartine-Group

Dana 8th edition

51.04.03a.06

51: Nesosilicate Minerals
04: Nesosilicates Nesosilicate Insular SiO4 Groups Only with cations in [6] and >[6] coordination
03a: Garnet group (Pyralspite series)

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Garnet supergroup  ⇒ Silicate garnets; Garnet group (Z charge 12)

Optical Properties

Color

dunkel gelb, rötlich gelb

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

RI value α / ω / n

1.872

Ri mean

1.872

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell parameters a (Å)

11.82

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volumne (ų)

1651.401

X-Ray Powder Diffraction

2.92(100),
2.62(100),
2.39(90),
1.906(80),
1.632(90),
1.574(90),
1.474(70),
0.968(90)
XRD chart Calderite

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

Morphology

kubisch

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

4.08

4.446 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Namibia/Otjozondjupa, Region/Otjosondu

Kanada/Neufundland und Labrador/Labrador/Labrador City/Wabush Iron Formation

Preface

Author (Name, Year)

Fermor, 1909

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 107.

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Nomenclature of the garnet supergroup. American Mineralogist; preprint December 2012 - [Formel]

IMA group assignments

Other languages

German

Calderit

Spanish

Calderita

English

Calderite

French

Calderite

Russian

Кальдерит

Alternative Name

Calderite (of Fermor)

CNMNC symbol

Symbol

Cdr

Locations with GPS information