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Despujolsite

Pictures (10 Images total)

Despujolsit
Views (Image: 1518344808): 622
Despujolsit

Bildbreite: 25 mm; Fundort: N'Chwaning III Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Stephan Wolfsried
Contribution: slugslayer 2018-02-11
Locality: N'Chwaning III Mine / N'Chwaning Mines (NChwaning Mines) / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Despujolsit auf Andradit
Views (Image: 1491599407): 554
Despujolsit auf Andradit

N'Chwaning Mine, Kalahari, Südafrika. BB 2,4mm
Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2017-04-07
Locality: N'Chwaning Mines (NChwaning Mines) / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Despujolsit
Views (Image: 1518343394): 388
Despujolsit

Größe: 08x06x04 mm; Fundort: N'Chwaning III Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-11
Locality: N'Chwaning III Mine / N'Chwaning Mines (NChwaning Mines) / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Despujolsit
Views (Image: 1518344217): 373
Despujolsit

Größe: 15 mm; Fundort: N'Chwaning III Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-11
Locality: N'Chwaning III Mine / N'Chwaning Mines (NChwaning Mines) / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Despujolsit
Views (Image: 1518343429): 237
Despujolsit

Größe: 11x04x02 mm; Fundort: N'Chwaning III Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-11
Locality: N'Chwaning III Mine / N'Chwaning Mines (NChwaning Mines) / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Despujolsit
Views (Image: 1518342490): 110
Despujolsit

Größe: 10x05x02 mm; Fundort: N'Chwaning III Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-11
Locality: N'Chwaning III Mine / N'Chwaning Mines (NChwaning Mines) / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika

Collectors Summary

Color zitronengelb bis grüngelb
Hardness (Mohs) 2.5
Solubility +++ HCl
Crystal System hexagonal, P62c

Chemism

Chem­ical formula

Ca3Mn4+(SO4)2(OH)6·3H2O

Chem­ical com­po­si­tion

Calcium, Mangan, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 523.3899239 u; Number of atoms in the formula: 35

Info

Empirical formula:

Ca3Mn(SO4)2(OH)6·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.31

12

34.29

1.0079470

12.0953640
Oxygen

O

51.97

17

48.57

15.9994300

271.9903100
Sulfur

S

12.25

2

5.71

32.0655000

64.1310000
Calcium

Ca

22.97

3

8.57

40.0784000

120.2352000
Manganese

Mn

10.50

1

2.86

54.9380499

54.9380499

Anal­y­sis wt%

CaO : 32.14, MnO2 : 16.61, SO3 : 30.59, H2O : 20.65 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

7.DF.25

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
F: mit großen und mittelgroßen Kationen
25:Fleischerit-Gruppe

Lapis Clas­sifica­tion

VI/D.11-010

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
11: Mittelgroße und sehr große Kationen

Clas­sifica­tion by Hölzel

7.DM.110

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
M: Fleischerite-Group

Dana 8th edi­tion

31.07.06.01

31: Hydrated Sulfates Containing Hydroxyl or Halogen
07: Hydrated Sulfates Containing Hydroxyl or Halogen where (A+ B++)2 (XO4) Zq·x(H2O)
06: Despujolsite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

zitronengelb bis grüngelb

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.026
Birefringence chart\! Despujolsite title=Birefringence chart Despujolsite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.656

RI value γ / ε

1.682

Ri mean

1.665

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6m2

Space Group number

190

Space Group

P62c

Cell param­e­ters a (Å)

8.56

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.76

Cell param­e­ters a/b or c/a

1.257

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

2

Volumne (ų)

682.795

X-Ray Pow­der Diffrac­tion

7.40(80),
4.26(90),
3.49(70),
3.34(100),
2.235(70),
2.198(70),
2.129(90),
2.025(80)
XRD chart Despujolsite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.46

2.546 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HCl

(Co-)Type locality

(Co-)Type locality

Marokko/Drâa-Tafilalet, Region/Zagora, Provinz/Agdz, Kreis/Tachgagalt/Tachgagalt Mine

Preface

Author (Name, Year)

Gaudefroy & Granger & Permingeat & Protas, 1968

References

Bulletin de la Société Française Minéralogie et de Cristallographie 91 (1968), 43

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Genplesite

Ca3Sn(SO4)2(OH)6·3H2O

hexagonal : 6/mmm : P63/mmc

7.DF.25

Schaurteite

Ca3Ge4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

7.DF.25

Despujolsite

Ca3Mn4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

7.DF.25

Fleischerite

Pb3Ge(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

7.DF.25

Mallestigite

Pb3Sb5+[(OH)6|AsO4|SO4]·3H2O

hexagonal : 6/m : P63/m

7.DF.25

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Despujolsite

Ca3Mn4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

VI/D.11-010

Schaurteite

Ca3Ge4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

VI/D.11-020

Fleischerite

Pb3Ge(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

VI/D.11-030

Mallestigite

Pb3Sb5+[(OH)6|AsO4|SO4]·3H2O

hexagonal : 6/m : P63/m

VI/D.11-040

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Schaurteite

Ca3Ge4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

7.DM.100

Despujolsite

Ca3Mn4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

7.DM.110

Fleischerite

Pb3Ge(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

7.DM.120

Mallestigite

Pb3Sb5+[(OH)6|AsO4|SO4]·3H2O

hexagonal : 6/m : P63/m

7.DM.130

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Kainite

MgSO4·KCl·3H2O

monoklin : 2/m : C2/m

 31.07.01.01

Uklonskovite

NaMg(SO4)F·2H2O

monoklin : 2/m : P21/m

 31.07.02.01

Aluminite

Al2(SO4)(OH)4·7H2O

monoklin : 2/m : P21/c

 31.07.04.01

Meta-aluminite

Al2(SO4)(OH)4·5H2O

 31.07.05.01

Despujolsite

Ca3Mn4+(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

 31.07.06.01

Fleischerite

Pb3Ge(SO4)2(OH)6·3H2O

hexagonal : 6m2 : P62c

 31.07.06.03

Mallestigite

Pb3Sb5+[(OH)6|AsO4|SO4]·3H2O

hexagonal : 6/m : P63/m

 31.07.06.04

Other languages

German

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Spanish

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English

Despujolsite

French

Despujolsite

Russian

Депюжолсит

Russian

Деспужолсит

IMA Number

IMA 1967-039

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