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Pseudoboleite

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Formula:
Pb31Cu24Cl62(OH)48
System:
Tetragonal
Colour:
Indigo blue, green-blue
Hardness:
Name:
From the Greek "false" and boleite.
Closely related to boleite.
See also the related blue Pb-Cu-chlorides diaboleite and cumengeite.

Classification of Pseudoboleite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
3.DB.10

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
B : With Pb, Cu, etc.
10.6.8.1

10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq
8.8.14

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
8 : Halides of Pb
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http://www.mindat.org/min-3301.html
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First Recorded Occurrence of Pseudoboleite

Year of Discovery:
1895

Occurrences of Pseudoboleite

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

Physical Properties of Pseudoboleite

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

Crystallography of Pseudoboleite

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
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 (pseudo-cubic, thick tabular). Commonly epitaxial overgrowths on boleite with mutually parallel {001}.

Epitaxial Relationships of Pseudoboleite

Epitaxial Minerals:
BoleiteKPb26Ag9Cu24(OH)48Cl62
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.43 (100)
3.83 (100)
2.707 (95)
2.551 (60)
2.389 (60)
2.334 (65)
1.990 (60)

Optical Data of Pseudoboleite

Type:
Uniaxial (-)
RI values:
nω = 2.030 nε = 2.000
Max Birefringence:
δ = 0.030
Image 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:
Pb31Cu24Cl62(OH)48
Essential elements:
All elements listed in formula:

Relationship of Pseudoboleite to other Species

3.DB.RickturneritePb7O4[Mg(OH)4](OH)Cl3
3.DB.05DiaboleitePb2CuCl2(OH)4
3.DB.15BoleiteKPb26Ag9Cu24(OH)48Cl62
3.DB.20CumengeitePb21Cu20Cl42(OH)40 · 6H2O
3.DB.25BideauxitePb2AgCl3(F,OH)2
3.DB.30ChloroxiphitePb3CuO2Cl2(OH)2
3.DB.35HematophanitePb4Fe3O8(OH,Cl)
3.DB.40AsisitePb7SiO9Cl2
3.DB.40ParkinsonitePb7MoO9Cl2
3.DB.45MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
3.DB.50YedlinitePb6Cr3+Cl6(O,OH,H2O)8
8.8.1AbhuriteSn21Cl16(OH)14O6
8.8.2MatlockitePbFCl
8.8.3LaurelitePb7F12Cl2
8.8.4CotunnitePbCl2
8.8.5MendipitePb3Cl2O2
8.8.6DamaraitePb3Cl(OH)O2
8.8.7LaurionitePbCl(OH)
8.8.8ParalaurionitePbCl(OH)
8.8.9PenfielditePb2Cl3(OH)
8.8.10FiedleritePb3FCl4(OH) · H2O
8.8.11BlixitePb2(O,OH)2Cl
8.8.12PseudocotunniteK2PbCl4
8.8.13DiaboleitePb2CuCl2(OH)4
8.8.15ChloroxiphitePb3CuO2Cl2(OH)2
8.8.17BideauxitePb2AgCl3(F,OH)2
8.8.18BoleiteKPb26Ag9Cu24(OH)48Cl62
8.8.19AravaipaitePb3F3[AlF6] · H2O
8.8.20YedlinitePb6Cr3+Cl6(O,OH,H2O)8
8.8.21KolaritePbTeCl2
8.8.22HematophanitePb4Fe3O8(OH,Cl)

Other Names for Pseudoboleite

Name in Other Languages:
Simplified Chinese:水氯铜铅矿
Traditional Chinese:水氯銅鉛礦

Other Information

Other Information:
Soluble in HNO3.
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 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

Localities for Pseudoboleite

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.
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.; Kolitsch, U., Brandstätter, F., Schreiber, F., Fink, R. & Auer, C. (2013): Die Mineralogie der weltweit einzigartigen Schlacken von Waitschach, Kärnten. Annalen des Naturhistorischen Museums in Wien, Serie A, 115, 19-87 (in German).
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Sierra Gorda District
        • Caracoles
Collected by Terry Szenic and in the collection of Brent Thorne.
maurizio dini collection - analysed material
Mr. Terry Szenics.
          • Sierra Deseada
Jasun McAvoy specimen
Rob Lavinky samples; analysed by XRD methods in USA
  • Tarapacá Region
    • El Tamarugal Province
      • Challacollo
maurzi; Schluter, J., Pohl, D., & Britvin, S. (2005). The new mineral challacolloite, KPb2Cl5, the natural occurrence of a technically known laser material. Neues Jahrbuch für Mineralogie-Abhandlungen, 182(1), 95-101.
France
 
  • Rhône-Alpes
    • Loire
      • La Pacaudière
        • Le Crozet
          • Les Rats Mine
Chollet, P. & Devouard, B. (2013): La mine de cuivre et de plomb des Rats, Le Crozet (Loire). Le Règne Minéral, 109, 7-46.
Germany
 
  • Lower Saxony
    • Harz
      • Goslar
        • Astfeld
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Lavrion (Laurion; Laurium)
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; Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
Grolig, H. & Grolig, E. (1978): Lavrion in Attika. Lapis, 3 (5), 16-25; 40 (in German).
        • Agios Nikolaos [St Nicholas] area
Fritz Schreiber collection (SXRD-analysed by Uwe Kolitsch)
        • Sounion area
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (II). Mineralien-Welt 25 (2), 82-95 (in German).
        • 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
  • Veneto
    • Belluno Province
      • Auronzo di Cadore
Ara, D., Sanna, L., Rossi, A., Galli, E., & De Waele, J. (2013). Minerali secondari in ambiente sotterraneo: la miniera dell’Argentiera (Sardegna nord-occidentale).
Mexico
 
  • Baja California Sur (BC 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.
2009 New Mexico Mineral Symposium abstracts
Panczner(1987):92-350.
UK
 
  • England
    • Cornwall
      • St Agnes District
        • Crantock
BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
        • Newquay
[Golley & Williams, 1995, 49 - "Cornish Mineral Reference Manual"]
USA
 
  • Arizona
    • Maricopa Co.
      • Painted Rock Mts
        • Painted Rock District
          • Theba
Michael Cline collection
    • 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.
  • California
    • San Bernardino Co.
      • Baker
        • Otto Mountain
PXRD analyzed by Tony Kampf.
  • Washington
    • Pierce Co.
      • Tacoma
        • Ruston
Washington Geology, vol.25, no. 3, September 1997.
Mineral and/or Locality  
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