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Dioptase (Dioptas)

Pictures (281 Images total)

Dioptas xx auf Shattuckit mit Calcit xx
Views (File:
1571558725
): 4073, Rating: 9.64
Dioptas xx auf Shattuckit mit Calcit xx
FO: Omaue Mine/Opuwo/Namibia; Bildbreite ca. 18mm
Copyright: etalon; Contribution: etalon
Collection: etalon
Location: Namibia/Kunene, Region/Kaokoveld Plateau/Omaue Mine
Mineral: Dioptase, Shattuckite
Image: 1571558725
Rating: 9.64 (votes: 14)
License: Usage for Mineralienatlas project only
Dioptas xx auf Shattuckit mit Calcit xx

FO: Omaue Mine/Opuwo/Namibia; Bildbreite ca. 18mm

Collection: etalon
Copyright: etalon
Contribution: etalon 2019-10-20
Locality: Omaue Mine / Kaokoveld Plateau / Kunene, Region / Namibia
Dioptas
Views (File:
1292511665
): 10781, Rating: 9.86
Dioptas
Größe: 1,79 mm; Fundort: Christmas Mine, Banner District, Dripping Springs Mts., Gila Co., Arizona, USA
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: USA/Arizona/Gila Co./Dripping Spring Mts/Banner District/Christmas/Christmas Mine (Inspiration Mine)
Mineral: Dioptase
Image: 1292511665
Rating: 9.86 (votes: 7)
License: Usage for Mineralienatlas project only
Dioptas

Größe: 1,79 mm; Fundort: Christmas Mine, Banner District, Dripping Springs Mts., Gila Co., Arizona, USA

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-12-16
Locality: Christmas Mine (Inspiration Mine) / Christmas / Banner District / Dripping Spring Mts / Gila Co. / Arizona / USA
Dioptas
Views (File:
1373618787
): 6787, Rating: 9.67
Dioptas
Größe: 4,8 mm; Fundort: Tsumeb Mine, Oshikoto (Otjikoto) Region, Namibia
Copyright: Matteo Chinellato; Contribution: Hg
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Dioptase
Image: 1373618787
Rating: 9.67 (votes: 6)
License: Usage for Mineralienatlas project only
Dioptas

Größe: 4,8 mm; Fundort: Tsumeb Mine, Oshikoto (Otjikoto) Region, Namibia

Copyright: Matteo Chinellato
Contribution: Hg 2013-07-12
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Dioptas
Views (File:
1366098820
): 4187, Rating: 9.6
Dioptas
Größe: 0,91 mm; Fundort: Tsumeb Mine, Otjikoto Region, Namibia
Copyright: Matteo Chinellato; Contribution: Hg
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Dioptase
Image: 1366098820
Rating: 9.6 (votes: 5)
License: Usage for Mineralienatlas project only
Dioptas

Größe: 0,91 mm; Fundort: Tsumeb Mine, Otjikoto Region, Namibia

Copyright: Matteo Chinellato
Contribution: Hg 2013-04-16
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Dioptas
Views (File:
1612516182
): 1267
Dioptas
Dioptaskristalle aus der Tsumeb Mine in Namibia. Bildbreite etwa 19 mm.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: Tsu-Diop-5-1-3
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Dioptase
Image: 1612516182
Rating: 10 (votes: 3)
License: Usage for Mineralienatlas project only
Dioptas (SNr: Tsu-Diop-5-1-3)

Dioptaskristalle aus der Tsumeb Mine in Namibia. Bildbreite etwa 19 mm.

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2021-02-05
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia

You find additional specimen at the Geolitho Museum

Collectors Summary

Color oft sehr intensiv smaragdgrün, blaugrün, türkisblau
Streak color blass grünlichblau
Lustre Glasglanz
Hardness (Mohs) 5
Solubility +++ Säuren, NH4OH, (NH4)2CO3, +- verdünnte CH3COOH, -KOH, Ultraschallbad!
Crystal System trigonal, R3

Additional information / Summary

Auführliche Informationen zur Geschichte, zu Fundstellen, zur Verwendung etc. sind im

zu finden.

Chemism

Chemical formula

CuSiO3·H2O

Chemical composition

Kupfer, Silicium, Sauerstoff, Wasserstoff

Unit weight: 157.645444 u; Number of atoms in the formula: 8

Info

Empirical formula:

CuSiO3·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.28

2

25.00

1.0079470

2.0158940

Oxygen

O

40.60

4

50.00

15.9994300

63.9977200

Silicon

Si

17.82

1

12.50

28.0855300

28.0855300

Copper

Cu

40.31

1

12.50

63.5463000

63.5463000

Analysis wt%

SiO2 : 36.85, Al2O3 : 2.36, CuO : 45.10, CaO : 3.38, H2O : 11.52 (Ref: Hintze, Handbuch der Mineralogie, 1904-1974)

Strunz 9th edition incl. updates

9.CJ.30

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
J: ~[Si6O18]12- sechser-Einfachringe, ohne inselartig, komplexe [Anionen]
30:Dioptas-Gruppe

Lapis Classification

VIII/E.21-010

VIII: SILIKATE
E: Ringsilikate
21: Sechserringe [Si6O18] 12-

Classification by Hölzel

9.CD.700

9: SILICATES
C: Cyclosilicates
D: ~[Si6O18]-rings, without borate
7: Cu-Cyclosilicates - Dioptase-Group

Dana 8th edition

61.01.03.01

61: Cyclosilicates Cyclosilicate Six-Membered Rings
01: Cyclosilicates Cyclosilicate Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

oft sehr intensiv smaragdgrün, blaugrün, türkisblau

Streak color

blass grünlichblau

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz

max. Birefringence

0.032

Birefringence chart\! Dioptase title=Birefringence chart Dioptase

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

1.671

RI value γ / ε

1.703

Ri mean

1.682

2V angle

Uniaxial (+)

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

14.66

Cell parameters b (Å)

-

Cell parameters c (Å)

7.83

Cell parameters a/b or c/a

0.534

Cell parameters c/b

-

Z

18

Volume (ų)

1457.338

X-Ray Powder Diffraction

7.29(80),
4.899(40),
4.064(40),
2.596(100),
2.441(40),
2.114(50),
1.506(40),
1.420(50)

XRD chart Dioptase

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)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.31

3.233 ( ρ calc. Mineralienatlas )

Radioactivity

keine

Instability

+++ Säuren, NH4OH, (NH4)2CO3, +- verdünnte CH3COOH, -KOH, Ultraschallbad!

Preface

Associations

Malachit, Calcit und Hemimorphit

Name from

dem griechischen dia - durch und optasia - sehen

Author (Name, Year)

Haüy, 1797

Relevance, Usage

Schmuckstein; seit der Antike als Farbpigment

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 191.

Wendell E. Wilson: Altyn-Tyube, Karaganda Region, Kazakhstan: The Type Locality for Dioptase. Mineralogical Record Vol. 54, No. 2 (2023) S. 209-253.

Other languages

Dutch

Dioptaas

Finnish

Dioptaasi

German

Dioptas

Spanish

Dioptasa

English

Dioptase

French

Dioptase

Italian

Dioptasio

Polish

Dioptaz

Russian

Диоптаз

Persian

دیوپتاز

Traditional Chinese

綠銅礦

Simplified Chinese

绿铜矿

Japanese

翠銅鉱

Simplified Chinese

青銅礦

Alternative Name

Spanish

Achirita

Achirite

German

Achrit

Spanish

Achrita

Achrite

German

Aschirit

Spanish

Aschirita

Aschirite

Ashirite

German

Dioptasit

Spanish

Dioptasita

Dioptasite

Emerald-copper

Emerald-malachite

Emeraudine

German

Kirghisit

Spanish

Kirghisita

Kirghisite

German

Kupfer-Smaragd

Kupfergrn crystallisirtes

Kupfergrün crystallisirtes

Kupfersmaragd

Rhombohedral Emerald Malachite

Smaragdo-chalcite (of Mohs)

Russian

Аширит

Benannt nach dem kasachischen Kaufmann Ashir, der als erster diesen Stein einführte und glaubte es sei ein Smaragd

CNMNC symbol

Symbol

Dpt

Locations with GPS information

IDs

GUSID (Global unique identifier short form) NdFaXEw0FUetc_xOiwOr5g
GUID (Global unique identifier) 5C5AD135-344C-4715-AD73-FC4E8B03ABE6
Database ID 941