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Daubréeite

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Daubreeit xx
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Daubreeit xx
Bildausschnitt ca. 13 mm; Fundort: Cerro Tasna, Bolivien
Copyright: Andi_Y; Contribution: Andi_Y
Location: Bolivien/Potosi, Departamento/Nor Chichas, Provinz/Atocha-Quechisla/Cerro Tazna
Mineral: Daubréeite
Image: 1139660335
Rating: 5 (votes: 2)
License: Usage for Mineralienatlas project only
Daubreeit xx

Bildausschnitt ca. 13 mm; Fundort: Cerro Tasna, Bolivien
Copyright: Andi_Y
Contribution: Andi_Y 2006-02-11
Locality: Cerro Tazna / Atocha-Quechisla / Nor Chichas, Provinz / Potosi, Departamento / Bolivien

Collectors Summary

Color creme-weiß, gräulich, gelblich-braun
Hardness (Mohs) 2 - 2.5
Solubility +++ Säuren
Crystal System tetragonal, P4/nmm

Chemism

Chemical formula

BiO(OH,Cl)

Chemical composition

Bismut, Chlor, Sauerstoff, Wasserstoff

Unit weight: 246.59864475 u; Number of atoms in the formula: 3.75

Info

Empirical formula:

BiO((OH)0.75Cl0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.31

0.75

20.00

1.0079470

0.7559603
Oxygen

O

11.35

1.75

46.67

15.9994300

27.9990025
Chlorine

Cl

3.59

0.25

6.67

35.4532000

8.8633000
Bismuth

Bi

84.75

1

26.67

208.9803820

208.9803820

Analysis wt%

Bi2O3 : 89.60, Cl : 7.50, H2O : 3.84, Fe2O3 : 0.72 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

3.DC.25

3: Halide (Fluoride, Chloride, Bromide, Iodide)
D: Oxihalide, Hydroxyhalide und verwandte Doppel-Halide
C: Mit [Pb] ([As], [Sb], [Bi]) ohne [Cu]
25:Matlockit-Gruppe

Lapis Classification

III/D.09-050

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
D: Oxihalogenide
9: Oxihalogenide mit Pb-Bi-Sb und verwandte Verbindungen

Classification by Hölzel

3.EB.360

3: HALIDES
E: Halides with mostly Pb,As,Sb,Bi,Te
B: With Pb,Bi
3: Matlockite-Group

Dana 8th edition

10.02.01.03

10: Oxyhalides and Hydroxyhalides
02: Oxyhalides and Hydroxyhalides where A (O,OH) Xq
01: Bismoclite Group

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

creme-weiß, gräulich, gelblich-braun

max. Birefringence

0.01
Birefringence chart\! Daubréeite title=Birefringence chart Daubréeite

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

1.91

RI value γ / ε

1.90

Ri mean

1.907

2V angle

Uniaxial (-)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

129

Space Group

P4/nmm

Cell parameters a (Å)

3.86

Cell parameters b (Å)

-

Cell parameters c (Å)

7.42

Cell parameters a/b or c/a

1.922

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

110.555

X-Ray Powder Diffraction

7.35(50),
3.70(30),
2.72(80),
2.66(100),
2.46(30),
1.672(100),
1.563(80),
1.259(50)
XRD chart Daubréeite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2 - 2.5

VHN (Hardness Vickers)

42 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

7.56 (berechnet)

7.407 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Bolivien/Potosi, Departamento/Nor Chichas, Provinz/Atocha-Quechisla/Cerro Tazna

Bolivien/Potosi, Departamento/Nor Chichas, Provinz/Atocha-Quechisla/Cerro Tazna/Tazna Mine (Tasna Mine)

Type material

Geowissenschaftliche Sammlungen des GZG, Göttingen

Collection number of type material

GZG.MIN.3.3.63.1 / UG023-025-Typusschränke Minerale

Preface

Author (Name, Year)

Domeyko, 1876

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 156

Other languages

German

Daubréeit

English

Daubréeite

French

Daubréeite

Spanish

Daubréeíta

Russian

Добрееит

Japanese

ﾀﾞｳﾌﾞﾘｰ石

Alternative Name

German

Daubreit

Spanish

Daubreita

CNMNC symbol

Symbol

Dau

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 8bDs2O9aukCd8OIxhBkxQg
GUID (Global unique identifier) D8ECB0F1-5AEF-40BA-9DF0-E23184193142
Database ID 890