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Schaurteite

Pictures (2 Images total)

Schaurteit
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Schaurteit (SNr: A012500)

Faserige weiße Kristalle , BB = 2,4 mm , Fundort: Tsumeb Mine, Otjikoto Region, Namibia.

Collection: Lithothek der Münchener Micromounter
Copyright: Joachim Esche
Contribution: Münchener Micromounter 2012-01-27
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Schaurteit
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Schaurteit

Bildbreite: 1,2 mm; Fundort: Tsumeb Mine, Oshikoto (Otjikoto) Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2015-02-04
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia

Collectors Summary

Color seidenweiß
Streak color weiß
Hardness (Mohs) 2.5
Crystal System hexagonal, P62c

Chemism

Chem­ical formula

Ca3Ge4+(SO4)2(OH)6·3H2O

Chem­ical com­po­si­tion

Calcium, Germanium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 541.092874 u; Number of atoms in the formula: 35

Info

Empirical formula:

Ca3Ge(SO4)2(OH)6·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.24

12

34.29

1.0079470

12.0953640

Oxygen

O

50.27

17

48.57

15.9994300

271.9903100

Sulfur

S

11.85

2

5.71

32.0655000

64.1310000

Calcium

Ca

22.22

3

8.57

40.0784000

120.2352000

Germanium

Ge

13.42

1

2.86

72.6410000

72.6410000

Anal­y­sis wt%

CaO : 31.10, GeO2 : 19.33, SO3 : 29.59, H2O : 19.98 (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.11-020

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

Clas­sifica­tion by Hölzel

7.DM.100

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

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

seidenweiß

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.012

Birefringence chart\! Schaurteite title=Birefringence chart Schaurteite

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

1.569

RI value γ / ε

1.581

Ri mean

1.573

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6m2

Space Group number

190

Space Group

P62c

Cell param­e­ters a (Å)

8.525

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.803

Cell param­e­ters a/b or c/a

1.267

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

2

Volumne (ų)

679.929

X-Ray Pow­der Diffrac­tion

7.41(70),
4.261(80),
3.497(50),
3.346(100),
2.579(50),
2.481(40),
2.241(40),
2.131(60)

XRD chart Schaurteite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

Density (g/cm³)

2.65

2.643 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine

Preface

Name from

dem deutsch-südafrikanischen Industriellen W. Schaurte

Author (Name, Year)

Strunz & Tennyson, 1965

References

Festschrift Dr. Werner T. Schaurte. Bauer & Schaurte, Neuss/Rhein, Germany (1967) (1967), 33

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

Other languages

German

Schaurteit

English

Schaurteite

French

Schaurteite

Spanish

Schaurteíta

Russian

Шауртеит

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