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Daubréeite

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Auguste Daubree
Formula:
(BiO)(OH,Cl)
System:
Tetragonal
Colour:
Creamy-white, greyish, ...
Lustre:
Greasy, Silky
Hardness:
2 - 2½
Name:
For French mineralogist and geologist Gabriel Auguste Daubrée (1814-96).

Classification of Daubréeite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
3.DC.25

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

10 : OXYHALIDES AND HYDROXYHALIDES
2 : A(O,OH)Xq
8.9.6

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

Year of Discovery:
1876
Geological Setting of First Recorded Material:
Oxidation zone of bismuth deposit.
Associated Minerals at First Recorded Locality:

Physical Properties of Daubréeite

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:
6.4 - 6.5 g/cm3 (Measured)    7.70 g/cm3 (Calculated)

Crystallography of Daubréeite

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/nmm
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
Max Birefringence:
δ = 0.240
Image 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:
All elements listed in formula:

Relationship of Daubréeite to other Species

Other Members of Group:
3.DC.05LaurionitePbCl(OH)
3.DC.05ParalaurionitePbCl(OH)
3.DC.10FiedleritePb3FCl4(OH) · H2O
3.DC.15PenfielditePb2Cl3(OH)
3.DC.20LaurelitePb7F12Cl2
3.DC.25Bismoclite(BiO)Cl
3.DC.25MatlockitePbFCl
3.DC.25RorisiteCaFCl
3.DC.25Zavaritskite(BiO)F
3.DC.25ZhangpeishaniteBaFCl
3.DC.30NadoritePbSbClO2
3.DC.30PeritePbBiClO2
3.DC.35AravaipaitePb3F3[AlF6] · H2O
3.DC.37CalcioaravaipaitePbCa2AlF9
3.DC.40ThorikositePb3Cl2(OH)(SbO3,AsO3)
3.DC.45MereheaditePb47Cl25(OH)13O24(CO3)(BO3)2
3.DC.50BlixitePb2(O,OH)2Cl
3.DC.55PinalitePb3WO5Cl2
3.DC.60SymesitePb10(SO4)O7Cl4 · H2O
3.DC.65EcdemitePb6Cl4(As2O7)
3.DC.65HeliophyllitePb6Cl4(As2O7)
3.DC.70MendipitePb3Cl2O2
3.DC.75DamaraitePb3Cl(OH)O2
3.DC.80OnoratoiteSb8Cl2O11
3.DC.85CotunnitePbCl2
3.DC.90PseudocotunniteK2PbCl4
3.DC.95BarstowitePb4Cl6(CO3) · H2O
8.9.1OnoratoiteSb8Cl2O11
8.9.2Kelyanite(Hg2+)6Sb3+BrCl2O6
8.9.3GananiteBiF3
8.9.4Zavaritskite(BiO)F
8.9.5Bismoclite(BiO)Cl
8.9.7PeritePbBiClO2

Other Names for Daubréeite

Name in Other Languages:
Simplified Chinese:羟氯铋矿
Traditional Chinese:羥氯鉍礦

Other Information

Other Information:
Totally soluble in acids. Re-precipitates upon substantial dilution.
Health Risks:
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

Localities for Daubréeite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
      • Toquima Range
NBMG Spec. Pub. 31 Minerals of Nevada
        • Round Mountain District
[MinRec 22:181]; Canadian Mineralogist Vol. 26, 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
          • Eureka
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
Mineral and/or Locality  
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