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Pseudoboleite

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Amelia Mine, Santa Rosalía (El Boleo), Boleo District, Mun. de Mulegé, Baja California Sur, Mexico
© 2004 ROM

Show Pseudoboleite Photos (30)
Formula:
Pb
 
31
Cu
 
24
Cl
 
62
(OH)
 
48
System:TetragonalColour:Indigo blue
Hardness:2½
Name:From the Greek "false" and boleite.
This page provides mineralogical data about Pseudoboleite.

Classification of Pseudoboleite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/D.12-20
Nickel-Strunz 10th (pending) edition ID:3.DB.10

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
B : With Pb, Cu, etc.
Dana 8th edition ID:10.6.8.1

10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq
Hey's CIM Ref.:8.8.14

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
8 : Halides of Pb
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Type Occurrence of Pseudoboleite

Type Locality:Santa Rosalía (El Boleo), Boleo District, Mun. de Mulegé, Baja California Sur, Mexico
Year of Discovery:1895

Occurrences of Pseudoboleite

Geological Setting:Secondary mineral of lead deposits. Smelter slag immersed in seawater.

Physical Properties of Pseudoboleite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Translucent
Comment:Pearly on cleavages.
Colour:Indigo blue
Streak:Light green
Hardness (Mohs):2½
Cleavage:Perfect
Perfect on {001}, nearly perfect on {101}
Density (measured):4.85 g/cm3
Density (calculated):5.07 g/cm3

Crystallography of Pseudoboleite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:I4/mmm {I4/m 2/m 2/m}
Cell Parameters:a = 15.24(2) Å, c = 30.74(5) Å
Ratio:a:c = 1 : 2.017
Unit Cell Volume:V 7,139.60 ų (Calculated from Unit Cell)
Z:2
Morphology:Rarely single crystals. Commonly epitaxial overgrowths on boleite with mutually parallel {001}.

Epitaxial Relationships of Pseudoboleite

Epitaxial Minerals:
Boleite

Optical Data of Pseudoboleite

Type:Uniaxial (-)
RI values: nω = 2.030 nε = 2.000
Maximum Birefringence:δ = 0.030

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

Chemical Properties of Pseudoboleite

Formula:
Pb
 
31
Cu
 
24
Cl
 
62
(OH)
 
48
Essential elements:Cl, Cu, H, O, Pb
All elements listed in formula:Cl, Cu, H, O, Pb

Relationship of Pseudoboleite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.DB.05Diaboleite
Pb
 
2
CuCl
 
2
(OH)
 
4
3.DB.15Boleite
KPb
 
26
Ag
 
9
Cu
 
24
(OH)
 
48
Cl
 
62
3.DB.20Cumengeite
Pb
 
21
Cu
 
20
Cl
 
42
(OH)
 
40
·6H
 
2
O
3.DB.25Bideauxite
Pb
 
2
Ag[(F,OH)
 
2
|Cl
 
3
]
3.DB.30Chloroxiphite
Pb
 
3
CuO
 
2
Cl
 
2
(OH)
 
2
3.DB.35Hematophanite
Pb
 
4
Fe
 
3
O
 
8
(OH,Cl)
3.DB.40Asisite
Pb
 
7
[O
 
4
|SiO
 
4
|Cl
 
2
]
3.DB.40Parkinsonite
(Pb,Mo,[])
 
8
O
 
8
Cl
 
2
3.DB.45Murdochite
PbCu
 
6
O
 
8-x
(Cl,Br)
 
2x
 x<=0.5
3.DB.50Yedlinite
Pb
 
6
(Cl,OH)
 
6
Cr
3+
 
(OH,O)
 
8
Related Minerals - Hey's Index Grouping:

- +
8.8.1Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
8.8.2Matlockite
PbFCl
8.8.3Laurelite
Pb(F,Cl,OH)
 
2
8.8.4Cotunnite
PbCl
 
2
8.8.5Mendipite
Pb
 
3
[O
 
2
|Cl
 
2
]
8.8.6Damaraite
Pb
 
3
[O
 
2
|OH|Cl]
8.8.7Laurionite
PbClOH
8.8.8Paralaurionite
PbClOH
8.8.9Penfieldite
Pb
 
2
[OH|Cl
 
3
]
8.8.10Fiedlerite
Pb
 
3
Cl
 
4
F(OH)·H
 
2
O
8.8.11Blixite
Pb
 
2
[(O,OH)
 
2
|Cl]
8.8.12Pseudocotunnite
K
 
2
PbCl
 
4
8.8.13Diaboleite
Pb
 
2
CuCl
 
2
(OH)
 
4
8.8.15Chloroxiphite
Pb
 
3
CuO
 
2
Cl
 
2
(OH)
 
2
8.8.17Bideauxite
Pb
 
2
Ag[(F,OH)
 
2
|Cl
 
3
]
8.8.18Boleite
KPb
 
26
Ag
 
9
Cu
 
24
(OH)
 
48
Cl
 
62
8.8.19Aravaipaite
Pb
 
3
[F
 
3
|AlF
 
6
] · H
 
2
O
8.8.20Yedlinite
Pb
 
6
(Cl,OH)
 
6
Cr
3+
 
(OH,O)
 
8
8.8.21Kolarite
PbTeCl
 
2
8.8.22Hematophanite
Pb
 
4
Fe
 
3
O
 
8
(OH,Cl)

Other Names for Pseudoboleite

Other Languages:
German:Pseudoboleit
Russian:Псевдоболеит
Spanish:Pseudoboleita

Other Information

Other Information:Soluble in HNO3.
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 Pseudoboleite

Reference List:Lacroix (1895) Bull. musée hist. naturelle, Paris: 39.

Friedel (1906) Bulletin de la Société française de Minéralogie: 29: 14.

Gossner and Arm (1929) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 72: 202.

Friedel (1930) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 73: 154.

Gossner (1930) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 75: 365.

Hocart (1930) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 74: 21.

Giuseppetti, G., Mazzi, F. & Tadini, C. (1992): The crystal structure of pseudoboleite: Pb31Cu24Cl62(OH)48; its relations with the structures of boleite and cumengeite. Neues Jahrb. Mineral., Monatsh. 1992: 113-126.

American Mineralogist (1992): 77: 1308.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (1997) Handbook of Mineralogy, Volume III. Halides, Hydroxides, Oxides. Mineral Data Publishing, Tucson, AZ, 628pp.: 452.

Internet Links for Pseudoboleite

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    Localities for Pseudoboleite

    Hide Locality List
    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.
    (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.
    Austria
     
    • Carinthia
      • Friesach - Hüttenberg area
        • Hüttenberg
          • Waitschach
    		U. Kolitsch and H. Pristacz (2009): An orthorhombic dimorph of barstowite, Pb4Cl6(CO3)•H2O, from slags at Maria Waitschach, Austria, and Lavrion, Greece. Poster, Joint MinPet 2009 and 4th MSCC, Budapest, Hungary, September 7-11; abstract in Mitt. Österr. Mineral. Ges. 155, 83.
    Chile
     
    • Antofagasta Region
      • Tocopilla Province
        • Sierra Gorda District
          • Caracoles
    maurizio dini collection - analysed material
    Mr. Terry Szenics.
    Rob Lavinky samples; analysed by XRD methods in USA
    • Tarapacá Region
      • Iquique Province
        • Challacollo
    		maurzi
    Germany
     
    • Lower Saxony
      • Harz Mts
        • Goslar
          • Astfeld
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Lavrion (Laurion; Laurium)
            • Lavrion Mines
    		No reference listed
          • Sounion area
            • Sounion Mines
    		Lapis, 24, 7/8 (1999); J. Gröbner und U. Kolitsch (2002): Neufunde von Laurion aus den Jahren 2001 und 2002. Aufschluss 53 (5-6), 363-371.
        • Lavrion District slag localities
          • Thorikos area
    		Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
    Italy
     
    • Liguria
      • Genova Province
        • Genova
          • Varenna Valley
    		Rivista Mineralogica Italiana, 22 (3), 39-41.
    • Sardinia
      • Cagliari Province
        • Villaputzu
    		Campostrini, I., Gramaccioli, C.M., Demartin, F. (1999): Orlandiite, Pb3Cl4(SeO3)•H2O, a new mineral species, and an associated lead-copper selenite chloride from the Baccu Locci mine, Sardinia, Italy. Mineralogical Magazine, 69, 1017-0145.
    • Tuscany
      • Livorno Province
        • Piombino
    		Muenchener Micromounter-Lithothek
    Mexico
     
    • Baja California Sur
      • Mun. de Mulegé
        • Boleo District
    		Bull. Mus. d'Hist. Nat. Paris (1889): 1, 39; MinRec 29:43; 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: 79, 81.
    No reference listed
    Panczner(1987):92-350.
    UK
     
    • England
      • Cornwall
        • St Agnes District
          • Newquay - Perranporth Area
            • Newquay
    		[Golley & Williams, 1995, 49 - "Cornish Mineral Reference Manual"]
    USA
     
    • Arizona
      • Pima Co.
        • Sierrita Mts
          • Pima District (Olive District; Mineral Hill District; Twin Buttes District)
            • San Xavier
              • Mission complex
                • Mineral Hill
                  • Mineral Hill Mines (Azurite group; Old Azurite Mine; Copper Glance Mine)
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183, 336; Williams, S.A. (1961), Gerhardtite from the Daisy shaft, Mineral Hill mine, Pima Co., AZ, AZ Geol. Soc. Digest: 4: 123.
      • Pinal Co.
        • Mammoth District
          • Tiger
            • St. Anthony deposit
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 336; Bideaux, R.A. (1980), Tiger, AZ, Min.Rec.: 11: 155-181; Palache, C. (1941b), Diaboleite from Mammoth mine, Tiger, AZ, Am.Min.: 26: 605-612.
    • Washington
      • Pierce Co.
        • Tacoma
          • Ruston
    		Washington Geology, vol.25, no. 3, September 1997.
    Mineral and/or Locality
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