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Dioptase

Pictures (258 Images total)

Dioptas xx auf Shattuckit mit Calcit xx
Views (Image: 1571558725): 3448, Rating: 9.64
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 (Image: 1292511665): 10047, Rating: 9.86
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 (Image: 1373618787): 6536, Rating: 9.67
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 (Image: 1366098820): 3958, Rating: 9.6
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 (Image: 1612516182): 767
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
Dioptase
Views (Image: 1602613856): 891
Dioptase

Perfect quality, Dioptase specimen, from Renéville, Kindanba District, Pool Department, Republic of the Congo

Copyright: pegmatite
Contribution: pegmatite 2020-10-13
Locality: Renéville, Stadt / Kindanba, Distrikt / Pool, Region / Republik Kongo

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

Volumne (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

References

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

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

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Диоптаз

Mineral Dealer

German pages

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

Locations with GPS information