Mindat Logo

Matlockite

Formula:
PbFCl
System:TetragonalColour:Colourless, light yellow ...
Hardness:2½ - 3
Name:After the locality near Matlock, Derbyshire, England.


Matlockite Group

An extremely rare secondary lead mineral.

Classification of Matlockite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/D.0-20
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:9.2.11.1

9 : NORMAL HALIDES
2 : AX2
Hey's CIM Ref.:8.8.2

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
8 : Halides of Pb
mindat.org URL:http://www.mindat.org/min-2593.html
Please feel free to link to this page.

Type Occurrence of Matlockite

Type Locality:Cromford, Matlock, Derbyshire, England, UK
Year of Discovery:1851
Associated Minerals at type locality:
SphaleritePhosgeniteGalenaFluoriteCerussite
BaryteAnglesite

Physical Properties of Matlockite

Lustre:Adamantine, Pearly
Diaphaneity (Transparency):Transparent
Colour:Colourless, light yellow to light golden-yellow, greenish
Hardness (Mohs):2½ - 3
Cleavage:Perfect
On {001}.
Fracture:Irregular/Uneven, Sub-Conchoidal
Density (measured):7.12 g/cm3
Density (calculated):7.16 g/cm3

Crystallography of Matlockite

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 = 4.11Å, c = 7.23Å
Ratio:a:c = 1 : 1.759
Unit Cell Volume:V 122.13 ų (Calculated from Unit Cell)
Morphology:Crystals usually tabular {001}; also as stout pyramidal crystals with smal prism faces. Subparallel aggregates of platy crystals; as hemispherical, rosette-like groups. Massive; coarsely lamellar.

Optical Data of Matlockite

Type:Uniaxial (-)
RI values: nω = 2.150 nε = 2.040
Maximum Birefringence:δ = 0.110

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Comments:Biaxial with small 2V at times, the result of subparallel growth or strain.

Chemical Properties of Matlockite

Formula:
PbFCl
Essential elements:Cl, F, Pb
All elements listed in formula:Cl, F, Pb

Relationship of Matlockite to other Species

Related to:
  • Matlockite Group
  • Related Minerals - Nickel-Strunz Grouping):
    3.DC.05Laurionite
    PbClOH
    3.DC.05Paralaurionite
    PbClOH
    3.DC.10Fiedlerite
    Pb
     
    3
    Cl
     
    4
    F(OH)·H
     
    2
    O
    3.DC.15Penfieldite
    Pb
     
    2
    [OH|Cl
     
    3
    ]
    3.DC.20Laurelite
    Pb(F,Cl,OH)
     
    2
    3.DC.25Bismoclite
    BiOCl
    3.DC.25Daubréeite
    BiO(OH,Cl)
    3.DC.25Rorisite
    CaFCl
    3.DC.25Zavaritskite
    BiOF
    3.DC.25Zhangpeishanite
    BaFCl
    3.DC.30Nadorite
    PbSb[O
     
    2
    |Cl]
    3.DC.30Perite
    PbBi[O
     
    2
    |Cl]
    3.DC.35Aravaipaite
    Pb
     
    3
    [F
     
    3
    |AlF
     
    6
    ] · H
     
    2
    O
    3.DC.35Calcioaravaipaite
    PbCa
     
    2
    [(F,OH)
     
    3
    |AlF
     
    6
    ] · H
     
    2
    O
    3.DC.40Thorikosite
    Pb
     
    3
    [OH|(SbO
     
    3
    ,AsO
     
    3
    )|Cl
     
    2
    ]
    3.DC.45Mereheadite
    Pb
     
    2
    [O|OH|Cl]
    3.DC.50Blixite
    Pb
     
    2
    [(O,OH)
     
    2
    |Cl]
    3.DC.55Pinalite
    Pb
     
    3
    WO
     
    3
    Cl
     
    2
    3.DC.60Symesite
    Pb
     
    10
    [O
     
    7
    |SO
     
    4
    |Cl
     
    4
    ] · H
     
    2
    O
    3.DC.65Ecdemite
    Pb
     
    6
    [As
     
    2
    O
     
    7
    |Cl
     
    4
    ]
    3.DC.65Heliophyllite
    Pb
     
    3
    AsO
     
    4-n
    Cl
     
    2n+1
    3.DC.70Mendipite
    Pb
     
    3
    [O
     
    2
    |Cl
     
    2
    ]
    3.DC.75Damaraite
    Pb
     
    3
    [O
     
    2
    |OH|Cl]
    3.DC.80Onoratoite
    Sb
     
    8
    O
     
    11
    Cl
     
    2
    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:
    8.8.1Abhurite
    Sn
     
    21
    Cl
     
    16
    (OH)
     
    14
    O
     
    6
    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
    8.8.14Pseudoboleite
    Pb
     
    31
    Cu
     
    24
    Cl
     
    62
    (OH)
     
    48
    8.8.15Chloroxiphite
    Pb
     
    3
    CuCl
     
    2
    (OH)
     
    2
    O
     
    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 Matlockite

    Synonyms:
    Matlockite (of Greg)
    German names:
    Matlockit
    Russian names:
    Матлокит
    Spanish names:
    Matlockita

    Other Information

    Thermal Behaviour:Melting point 601°.
    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 Matlockite

    Reference List:Greg (1851) Philosophical Magazine and Journal of Science: 2: 120.

    Rammelsberg (1852) Annalen der Physik, Halle, Leipzig: 85: 141.

    Sandonnini (1911) Gazzetta chimica italiana, Rome: 41: 144.

    Goldschmidt, V. (1920) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 6: 12.

    Nieuwenkamp (1933) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 86: 470.

    Bannister (1934) Mineralogical Magazine: 23: 587.

    Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 59-60.

    Pasero, M. & Perchiazzi, N.(1996): Crystal structure refinement of matlockite. Mineralogical Magazine: 60: 833-836.

    Articles/Blogs about Matlockite

    Internet Links for Matlockite

    Search Engines:
  • Look for Matlockite on Google
  • Look for Matlockite images on Google
  • External Links:
  • Look for Matlockite on Webmineral
  • Look for Matlockite on Athena Mineralogy
  • Look for Matlockite on Wikipedia
  • Look for Matlockite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Matlockite in the Natural History Museum (London) online catalogue
  • Matlockite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Buy Minerals and Crystals from Crystalarium.com
  • Lapis Mineral Magazin
  • Buy fine minerals and gemstones from Pala International
  • Search for Matlockite at Thames Valley Minerals
  • Fine Minerals from Dan Weinrich Minerals
  • The Arkenstone - Fine Minerals
  • Top quality minerals from Kristalle of California
  • Buy from David K Joyce minerals
  • Search for Matlockite on minvision.com
  • High-end worldwide specimens & outstanding customer service
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Find Matlockite on www.crystalclassics.co.uk
  • Jobs:
  • Mining & Geology Jobs
  • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Matlockite

    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.
    These maps work faster with Firefox!
    (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.
    Australia
     
    • Tasmania
      • Zeehan district
        • Zeehan
    Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Chile
     
    • Antofagasta Region
      • Tocopilla Province
        • Sierra Gorda District
          • Caracoles
    Berman, Frondel & Palache
    • Tarapacá Region
      • Iquique Province
    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: 60.
    China
     
    • Shandong Province
      • Linyi Prefecture
        • Yimeng Mts (Yimeng Shan)
          • Mengyin Co.
            • Mengyin Kimberlite field
              • Changma Kimberlite belt
                • Wangcun deposit
    Gorshkov, A.I., Titkov, S.V., Yan Nan Bao, Ryabchikov, I.D., and Magazina, L.O. (2006): Geology of Ore Deposits 48(4), 326-334.
    France
     
    • Languedoc-Roussillon
      • Lozère
        • Marvejols
          • St Léger-de-Peyre
    Galvier J. et al. (1997), La mine de Sainte Lucie, Lozère (France), Le Règne Minéral, n° 18, pp: 5-36
    Germany
     
    • North Rhine-Westphalia
      • Ruhr Coal Mining area
        • Essen
    Weiss: "Mineralfundstellen, Deutschland West", 1990
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
    No reference listed
        • Lavrion District slag localities
          • Oxygon area
    No reference listed
          • Passa Limani area
    Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals of the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
          • Sounion area
    Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian, (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
          • Thorikos area
    Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
          • Vrissaki area
    Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
    Italy
     
    • Tuscany
      • Livorno Province
        • Campiglia Marittima
    Int. Assoc. of Collectors of Slag Minerals, 10 (2), 4-6.
        • Piombino
    Lapis, 20 (4), 13-18+50.
    South Africa
     
    • Gauteng Province
    Minerals of South Africa
    UK
     
    • England
      • Derbyshire
        • Bolehill
    Lapis 8(9), 35 (1983)
        • Matlock
    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: 60.
    USA
     
    • Arizona
      • Gila Co.
        • Radium
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 141, 146, 291; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
      • Pima Co.
        • Tohono O'odom (Papago) Indian Reservation
          • Comobabi Mts
            • Cababi District (Comobabi District)
              • Ko Vaya
                • Mildren Mine group
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 278, 291.
      • Pinal Co.
        • Mammoth District
          • Tiger
            • St. Anthony deposit
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 135, 141; Williams, S.A. (1970a), Bideauxite, a new Arizona mineral, Min.Mag.: 37: 637-640; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 44.
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 291; Bideaux, R.A. (1980), Tiger, Arizona, Min.Rec.: 11: 155-181; Fahey, J.J., et al (1950), Wherryite, a new mineral from the Mammoth mine, AZ, Am.Min.: 35: 93-98.
    • Nevada
      • Elko Co.
        • Spruce Mountain District
    NBMG Spec. Pub. 31 Minerals of Nevada
    • South Dakota
      • Lawrence Co.
    R&M 75:3 pp 156-169
          • Spearfish
    SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
    Zimbabwe
     
    • Mashonaland West
      • Kadoma District
    Vetter, U., Weck, H.-D., Weale, T., Klosa, D., Wittich, C. and Hoffmann, K. (1999): A provisional inventory of the Sanyati oxide-zone minerals, Zimbabwe. Z. Angew. Geol. 45, 15-21.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. 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. If you would like to add information to improve the quality of our database, then click here to register.