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Daubréeite

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Cerro Tazna, Atocha-Quechisla District, Nor Chichas Province, Potosí Department, Bolivia
© Thomas Witzke




Formula:
(BiO)(OH,Cl)
System:TetragonalColour:Creamy-white, greyish, ...
Lustre:Greasy, SilkyHardness:2 - 2½
Member of:Matlockite Group
Name:
For French mineralogist and geologist Gabriel Auguste Daubrée (1814-96).


Matlockite Group.

Classification of Daubréeite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/D.0-50
Nickel-Strunz 10th (pending) edition ID:3.DC.25

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
Dana 8th edition ID:10.2.1.3

10 : OXYHALIDES AND HYDROXYHALIDES
2 : A(O,OH)Xq
Hey's CIM Ref.:8.9.6

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
9 : Halides of Sb and Bi
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Type Occurrence of Daubréeite

Type Locality:Constancia mine, Cerro Tazna, Atocha-Quechisla District, Nor Chichas Province, Potosí Department, Bolivia
Year of Discovery:1876
Geological Setting of type material:Oxidation zone of bismuth deposit.
Associated Minerals at type locality:
Clay

Physical Properties of Daubréeite

Lustre:Greasy, Silky
Diaphaneity (Transparency):Transparent
Colour:Creamy-white, greyish, yellowish-brown; colourless in transmitted light.
Hardness (Mohs):2 - 2½
Tenacity:Waxy
Cleavage:Perfect
On {001}
Comment:Very plastic
Density (measured):6.4 - 6.5 g/cm3
Density (calculated):7.70 g/cm3

Crystallography of Daubréeite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P4/nmm {P4/n 21/m 2/m}
Cell Parameters:a = 3.85Å, c = 7.4Å
Ratio:a:c = 1 : 1.922
Unit Cell Volume:V 109.69 ų (Calculated from Unit Cell)
Z:2
Morphology:Massive only; compact, earthy, columnar to platy-fibrous.

Optical Data of Daubréeite

Type:Uniaxial (-)
RI values: nω = 2.150 nε = 1.910
Maximum Birefringence:δ = 0.240

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Daubréeite

Formula:
(BiO)(OH,Cl)
Essential elements:Bi, H, O
All elements listed in formula:Bi, Cl, H, O

Relationship of Daubréeite to other Species

Member of:Matlockite Group
Other Members of Group:

- +
Related Minerals - Nickel-Strunz Grouping):

- +
3.DC.05Laurionite
PbCl(OH)
3.DC.05Paralaurionite
PbCl(OH)
3.DC.10Fiedlerite
Pb
 
3
FCl
 
4
(OH) · H
 
2
O
3.DC.15Penfieldite
Pb
 
2
Cl
 
3
(OH)
3.DC.20Laurelite
Pb
 
7
F
 
12
Cl
 
2
3.DC.25Bismoclite
(BiO)Cl
3.DC.25Matlockite
PbFCl
3.DC.25Rorisite
CaFCl
3.DC.25Zavaritskite
(BiO)F
3.DC.25Zhangpeishanite
BaFCl
3.DC.30Nadorite
PbSbClO
 
2
3.DC.30Perite
PbBiClO
 
2
3.DC.35Aravaipaite
Pb
 
3
F
 
3
[AlF
 
6
] · H
 
2
O
3.DC.37Calcioaravaipaite
PbCa
 
2
(F,OH)
 
3
[AlF
 
6
] · H
 
2
O
3.DC.40Thorikosite
Pb
 
3
Cl
 
2
(OH)(SbO
 
3
,AsO
 
3
)
3.DC.45Mereheadite
Pb
 
47
Cl
 
25
(OH)
 
13
O
 
24
(CO
 
3
)(BO
 
3
)
 
2
3.DC.50Blixite
Pb
 
2
(O,OH)
 
2
Cl
3.DC.55Pinalite
Pb
 
3
WO
 
5
Cl
 
2
3.DC.60Symesite
Pb
 
10
Cl
 
4
O
 
7
(SO
 
4
) · H
 
2
O
3.DC.65Ecdemite
Pb
 
6
Cl
 
4
(As
 
2
O
 
7
)
3.DC.65Heliophyllite
Pb
 
6
Cl
 
4
(As
 
2
O
 
7
)
3.DC.70Mendipite
Pb
 
3
Cl
 
2
O
 
2
3.DC.75Damaraite
Pb
 
3
Cl(OH)O
 
2
3.DC.80Onoratoite
Sb
 
8
Cl
 
2
O
 
11
3.DC.85Cotunnite
PbCl
 
2
3.DC.90Pseudocotunnite
K
 
2
PbCl
 
4
3.DC.95Barstowite
Pb
 
4
Cl
 
6
(CO
 
3
) · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
8.9.1Onoratoite
Sb
 
8
Cl
 
2
O
 
11
8.9.2Kelyanite
(Hg
+
2
)
 
6
Sb
3+
 
BrCl
 
2
O
 
6
8.9.3Gananite
BiF
 
3
8.9.4Zavaritskite
(BiO)F
8.9.5Bismoclite
(BiO)Cl
8.9.7Perite
PbBiClO
 
2

Other Names for Daubréeite

Synonyms:
Daubreite
Other Languages:
German:Daubréeit
Daubreit
Russian:Добрееит
Spanish:Daubréeita
Daubreita

Other Information

Other Information:Totally soluble in acids. Re-precipitates upon substantial dilution.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Daubréeite

Reference List:

- +
Domeyko (1876) Comptes rendu de l’Académie des sciences de Paris: 82: 922.

Domeyko, I. (1879) Elementos de Mineralogia, 3rd. edition: 297.

Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 60-62.

Internet Links for Daubréeite

Search Engines:
  • Look for Daubréeite on Google
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    • External Links:
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  • Look for Daubréeite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Daubréeite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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  • Fabre Minerals - search for Daubréeite specimens
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    • Localities for Daubréeite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Bolivia
     
    • Potosí Department
      • Nor Chichas Province
        • Atocha-Quechisla District
    		[MinRec 32:481]
    Domeyko (1876); Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 62.
      • Sud Chichas Province
        • Atocha-Quechisla District
          • Cerro Chorolque
    		[MinRec 32:468]
    Italy
     
    • Tuscany
      • Livorno Province
        • Elba Island
          • Rio Marina
            • Rio Mine (Rio Marina Mine)
    		G. Marinelli, 1959 - I minerali di bismuto del cantiere Falcacci a Rio Marina (Isola d'Elba). - Atti Soc. Tosc. Sc. Nat., Mem. Serie A, 66: 337-352.
    USA
     
    • Nevada
      • Nye Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
        • Round Mountain District
    		[MinRec 22:181]; Canadian Mineralogist Vol. 27, pp. 355-376(1988)
    • Oregon
      • Josephine Co.
        • Josephine Creek District
    		Dr. Frank Keutsch specimen (microinclusion in awaruite nugget)
    • Utah
      • Juab Co.
        • East Tintic Mts
          • Tintic District
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    Means, A H "Some New Mineral Occurences From The Tintic District, Utah" American Journal of Science Vol 41, Noi 241 (1916) pp 125-30; Means, A H "Some New Mineral Occurences From The Tintic District, Utah" American Journal of Science Vol 41, Noi 241 (1916) pp 125-30
    UGMS Bull 117 Minerals and Mineral Localities of Utah
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 18th Jun 2011 05:49:11
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    Updated Mineral Entry: BykovaiteFrom Van King, 17th Feb 2012 19:50:20