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Calderite

Pictures (2 Images total)

Calderit
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Calderit

Bildbreite: 3,4 cm, Fundort: Otjosondu, Otjozondjupa Region, Namibia.

Copyright: Dan Weinrich
Contribution: thdun5 2009-11-10
Locality: Otjosondu / Otjozondjupa, Region / Namibia
Calderit
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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

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 )

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

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Calderit
Google-Bilder-Suche - search for: Calderit
Mineralienatlas.de (Forum) - search for: Calderit

English pages

Mindat - search for: Calderite
Webmineral - search for:Calderite
Handbook-of-Mineralogy - search for: Calderite
RRUFF - Raman, XRD and other mineral data - search for: Calderite
RRUFF - References and PDF downloads - search for: Calderite
American-Mineralogist-Crystal-Structure-Database - search for: Calderite
Strahlen.org - search for: Calderite

Russian pages

Webmineral.ru - search for: Кальдерит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Calderit
Crystal-Treasure.com - search for: Calderit
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Edelsteine Neuburg - Gundolf Fischer - search for: Calderit

Locations with GPS information