Mineralogy Database

Daubreeite Mineral Data

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General Daubreeite Information

Help on Chemical  Formula: Chemical Formula: BiO(OH,Cl)
Help on Composition: Composition: Molecular Weight = 251.21 gm
   Bismuth   83.19 %  Bi   92.74 % Bi2O3
   Hydrogen   0.20 %  H     1.79 % H2O
   Chlorine   7.06 %  Cl    7.06 % Cl
               -   %   Cl   -1.59 % -O=Cl2   
   Oxygen     9.55 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BiO(OH)0.5Cl0.5
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1876
Help on Locality: Locality: Constanicia mine, Tazna, Bolivia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Gabriel Auguste Daubree (1814-1896), French mineralogist and geologist.
Help on Name Pronunciation: Name Pronunciation: Daubreeite + Pronunciation Say DAUBREEITE
 

Daubreeite Image

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  Daubreeite

Comments: Massive yellow daubreeite.
Location: Cerro Tazna, Atocha-Quechisla district, Nor Chichas Province, Potosí Department, Bolivia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Daubreeite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.91968
Help on Cell Dimensions: Cell Dimensions: a = 3.86, c = 7.41, Z = 2; V = 110.41 Den(Calc)= 7.56
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
 

Physical Properties of Daubreeite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellow, Yellow brown, Cream white.
Help on Density: Density: 6.5
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Compact - Occurs as a compact mass.
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Earthy (Dull)
 

Optical Properties of Daubreeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.2 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1362,KPDmeas= 0.1585,KC= 0.1703
Ncalc = 2.11 - 2.29
Help on Optical Data: Optical Data: Uniaxial (-), e=1.91, w=2.15, bire=0.2400.
 

Calculated Properties of Daubreeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.38 gm/cc
note: Specific Gravity of Daubreeite =6.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0000469892
Boson Index = 0.9999530108
Help on Photoelectric: Photoelectric: PEDaubreeite =1,617.44 barns/electron
U=PEDaubreeite x rElectron Density=8,704.97 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Daubreeite is Not Radioactive
 

Daubreeite Classification

Help on  Dana Class: Dana Class: 10.02.01.03 (10)Oxyhalides and Hydroxyhalides
  (10.02)where A (O,OH) Xq
  (10.02.01)Bismoclite Group
 
10.02.01.01 Zavaritskite BiOF P 4/nmm 4/m 2/m 2/m
 
10.02.01.02 Bismoclite BiOCl P 4/nmm 4/m 2/m 2/m
 
10.02.01.03 Daubreeite BiO(OH,Cl) P 4/nmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 03.DC.25 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DC -With Pb (As,Sb,Bi), without Cu
 
03.DC.25 Bismoclite BiOCl P 4/nmm 4/m 2/m 2/m
 
03.DC.25 Daubreeite BiO(OH,Cl) P 4/nmm 4/m 2/m 2/m
 
03.DC.25 Matlockite PbFCl P 4/nmm 4/m 2/m 2/m
 
03.DC.25 Rorisite (Ca,Mg)FCl P 4/nmm 4/m 2/m 2/m
 
03.DC.25 Zavaritskite BiOF P 4/nmm 4/m 2/m 2/m
 
03.DC.25 Zhangpeishanite! BaFCl P 4/mmm 4mm
 

Other Daubreeite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Daubreeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Daubreeite

BiO(OH,Cl)
Dana No: 10.02.01.03 Strunz No: 03.DC.25
Locality:

 

Notes:

 

 
   
 


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