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Matlockite

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About MatlockiteHide

Formula:
PbFCl
Colour:
Colourless, light yellow to light golden-yellow, greenish
Lustre:
Adamantine, Pearly
Hardness:
2½ - 3
Specific Gravity:
7.12
Crystal System:
Tetragonal
Name:
After the locality near Matlock, Derbyshire, England.
Matlockite Group.

An extremely rare secondary lead mineral.
May be confused with platy phosgenite.


Classification of MatlockiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1851
3.DC.25

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
9.2.11.1

9 : NORMAL HALIDES
2 : AX2
8.8.2

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

Pronounciation of MatlockiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of MatlockiteHide

Adamantine, Pearly
Transparency:
Transparent
Colour:
Colourless, light yellow to light golden-yellow, greenish
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {001}.
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
7.12 g/cm3 (Measured)    7.16 g/cm3 (Calculated)

Optical Data of MatlockiteHide

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

Formula:
PbFCl
IMA Formula:
PbClF

Crystallography of MatlockiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/nmm
Cell Parameters:
a = 4.11 Å, c = 7.23 Å
Ratio:
a:c = 1 : 1.759
Unit Cell 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.

Type Occurrence of MatlockiteHide

Place of Conservation of Type Material:
Natural History Museum, London, England, 89055.
Associated Minerals at Type Locality:
Reference:
Greg, R.P. (1851) A Description of Matlockite, a New Oxychloride of Lead. The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science: 2: 120-121.

Synonyms of MatlockiteHide

Other Language Names for MatlockiteHide

Relationship of Matlockite to other SpeciesHide

Other Members of this group:
BismocliteBiOClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
Daubréeite(BiO)(OH,Cl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
LaurionitePbCl(OH)Orth. mmm (2/m 2/m 2/m)
ParalaurionitePbCl(OH)Mon. 2/m : B2/m
RorisiteCaFClTet.
Zavaritskite(BiO)FTet.

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Matlockite associated with DiaboleitePb2CuCl2(OH)4
3 photos of Matlockite associated with PhosgenitePb2CO3Cl2
1 photo of Matlockite associated with BoleiteKPb26Ag9Cu24(OH)48Cl62
1 photo of Matlockite associated with QuartzSiO2
1 photo of Matlockite associated with CerussitePbCO3
1 photo of Matlockite associated with CaledonitePb5Cu2(SO4)3(CO3)(OH)6
1 photo of Matlockite associated with Hematite GroupM2O3
1 photo of Matlockite associated with LeadhillitePb4(CO3)2(SO4)(OH)2

Related Minerals - Nickel-Strunz GroupingHide

3.DC.05LaurionitePbCl(OH)Orth. mmm (2/m 2/m 2/m)
3.DC.05ParalaurionitePbCl(OH)Mon. 2/m : B2/m
3.DC.10FiedleritePb3FCl4(OH) · H2OMon. 2/m
3.DC.15PenfielditePb2Cl3(OH)Hex. 6 : P6
3.DC.20LaurelitePb7F12Cl2Hex. 6 : P6
3.DC.25BismocliteBiOClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25Daubréeite(BiO)(OH,Cl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25RorisiteCaFClTet.
3.DC.25Zavaritskite(BiO)FTet.
3.DC.25ZhangpeishaniteBaFClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.30NadoritePbSbClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
3.DC.30PeritePbBiClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
3.DC.35AravaipaitePb3AlF9 · H2OTric.
3.DC.37CalcioaravaipaitePbCa2AlF9Tric. 1
3.DC.40ThorikositePb3Cl2(OH)(SbO3,AsO3)Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DC.45MereheaditePb47Cl25(OH)13O24(CO3)(BO3)2Mon. m
3.DC.50BlixitePb8O5(OH)2Cl4Orth.
3.DC.55PinalitePb3WO5Cl2Orth.
3.DC.60SymesitePb10(SO4)O7Cl4 · H2OTric. 1 : P1
3.DC.65EcdemitePb6Cl4(As2O7)Mon. 2 : P21
3.DC.65HeliophyllitePb6Cl4(As2O7)Orth.
3.DC.70MendipitePb3Cl2O2Orth. 2 2 2 : P21 21 21
3.DC.75DamaraitePb3Cl(OH)O2Orth. mm2 : Pmc21
3.DC.80OnoratoiteSb8Cl2O11Tric. 1 : P1
3.DC.85CotunnitePbCl2Orth. mmm (2/m 2/m 2/m)
3.DC.90PseudocotunniteK2PbCl4Orth.
3.DC.95BarstowitePb4Cl6(CO3) · H2OMon. 2/m : P21/m

Related Minerals - Dana Grouping (8th Ed.)Hide

9.2.11.2RorisiteCaFClTet.
9.2.11.3ZhangpeishaniteBaFClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.8.1AbhuriteSn21Cl16(OH)14O6Trig.
8.8.3LaurelitePb7F12Cl2Hex. 6 : P6
8.8.4CotunnitePbCl2Orth. mmm (2/m 2/m 2/m)
8.8.5MendipitePb3Cl2O2Orth. 2 2 2 : P21 21 21
8.8.6DamaraitePb3Cl(OH)O2Orth. mm2 : Pmc21
8.8.7LaurionitePbCl(OH)Orth. mmm (2/m 2/m 2/m)
8.8.8ParalaurionitePbCl(OH)Mon. 2/m : B2/m
8.8.9PenfielditePb2Cl3(OH)Hex. 6 : P6
8.8.10FiedleritePb3FCl4(OH) · H2OMon. 2/m
8.8.11BlixitePb8O5(OH)2Cl4Orth.
8.8.12PseudocotunniteK2PbCl4Orth.
8.8.13DiaboleitePb2CuCl2(OH)4Tet. 4mm : P4mm
8.8.14PseudoboleitePb31Cu24Cl62(OH)48Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.8.15ChloroxiphitePb3CuO2Cl2(OH)2Mon. 2/m : P21/m
8.8.17BideauxitePb2AgCl3(F,OH)2Iso. m3m (4/m 3 2/m) : Fd3m
8.8.18BoleiteKPb26Ag9Cu24(OH)48Cl62Iso. m3m (4/m 3 2/m) : Pm3m
8.8.19AravaipaitePb3AlF9 · H2OTric.
8.8.20YedlinitePb6Cr3+Cl6(O,OH,H2O)8Trig. 3 : R3
8.8.21KolaritePbTeCl2Orth.
8.8.22HematophanitePb4Fe3O8(OH,Cl)Tet. 4/mmm (4/m 2/m 2/m)

Other InformationHide

Thermal Behaviour:
Melting point 601°.
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 MatlockiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Greg, R.P. (1851) A Description of Matlockite, a New Oxychloride of Lead. The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science: 2: 120-121.
Rammelsberg, C. (1852) Annalen der Physik, Halle, Leipzig: 85: 141.
Sandonnini, C. (1911) Gazzetta chimica italiana, Rome: 41: 144.
Goldschmidt, V. (1920) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 6: 12.
Nieuwenkamp, W. (1933) Die chemische zusammensetzung von matlockit. Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 86: 470-471.
Bannister, F.A. and Hey, M.H. (1934) The crystal-structure and optical properties of matlockite (PbFCl). Mineralogical Magazine: 23(146): 587-597.
Foshag, W.F. (1934) New mineral names. American Mineralogist: 19: 287-288.
Foshag, W.F. (1935) New mineral names. American Mineralogist: 20: 314-317.
Palache, C., Berman, H., and Frondel, C. (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.
Bridges, T. and Smith, M.E. (1983) Phosgenite and Matlockite in Derbyshire (Part 1). Journal of the Russell Society: 1(2): 7-14.
Pasero, M. and Perchiazzi, N. (1996) Crystal structure refinement of matlockite. Mineralogical Magazine: 60(402): 833-836.
Russo, M., Campostrini, I. (2011) Ammineite, matlockite and post 1944 eruption fumarolic minerals at Vesuvius. Plinius: 37: 312.

Internet Links for MatlockiteHide

Localities for MatlockiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • Tasmania
    • West Coast municipality
      • Zeehan district
        • Zeehan mineral field
Bottrill, R.S., Baker, W.E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey Tasmania Bulletin 73, 254 pages.
Austria
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Hüttenberg
        • 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
    • Antofagasta Province
      • Sierra Gorda
        • Caracoles
Berman, Frondel & Palache
  • Tarapacá
    • Tamarugal 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
    • Linyi
      • Mengyin County
        • 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
 
  • Occitanie
    • 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; Mineralogical Record 2011 42:0-32
Germany
 
  • North Rhine-Westphalia
    • The Ruhr
      • Essen
Weiss, S. (1990) Mineralfundstellen Atlas, Deutschland West. Weise Verlag, München, 320 pages.
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
No reference listed
Grolig, H. & Grolig, E. (1978): Lavrion in Attika. Lapis, 3 (5), 16-25; 40 (in German).
          • 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
Fritz Schreiber collection (SXRD-analysed by Uwe Kolitsch)
Elmar Lackner collection
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
Lacroix, A. & De Schulten, A. (1908): Note sur des minéraux plombifères des scories athéniennes du Laurion. Bulletin de la Société française de Minéralogie et de Cristallographie, 31, 79-90 (in French).; Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands; 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).
Italy
 
  • Campania
    • Naples
      • Somma-Vesuvius Complex
M. Russo & I. Campostrini (2011): Ammineite, matlockite and post 1944 eruption fumarolic minerals at Vesuvius. Plinius 37, 312.; Demartin F., Campostrini I., Castellano C., Russo M. 2014. Parascandolaite, KMgF3, a new perovskite-type fluoride from Vesuvius. Phys. Chem. Min., published online: 8 April 2014.
  • Lazio
    • Metropolitan City of Rome Capital
      • Anzio
Marco Bonifazi Collection
  • Tuscany
    • Livorno Province
      • Campigliese (Campiglia Mountains; Campiglia Ridge)
        • Campiglia Marittima
Int. Assoc. of Collectors of Slag Minerals, 10 (2), 4-6.
        • Sassetta
          • Canina Valley
Jansen, H. & van den Berg, W. (1998): Slakkenmineralen in Toscane (Italië). Gea, no. 4, 109-117 (in Dutch).
        • Suvereto
Luigi Chiappino data
      • Piombino
Franzini, M., Perchiazzi, N. (1992): I minerali delle scorie ferrifere etrusche di Baratti (Livorno). Atti della Società Toscana di Scienze Naturali, Memorie, Serie A, 99, 43-77; Franzini, M., Perchiazzi, N., Bartoli, M.L., Chiappino, L. (1992): Baratti (LI): una nuova località mineralogica italiana analoga al Laurion. Rivista Mineralogica Italiana, 15, 2 (2-1992), 67-75 [2a parte]; Cerutti, G., Preite, D. (1995): Mineralien der etruskischen Schlacken von Baratti, Toskana. Lapis, 20, 4, 13-18 and 50.
Russia
 
  • Chelyabinsk Oblast
Pavel M. Kartashov analytical data of 2015
South Africa
 
  • Mpumalanga
    • Nkangala District
      • Delmas
Minerals of South Africa
UK
 
  • England
    • Cornwall
      • Crantock
BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
      • St Hilary
S. Rust Collection
    • County Durham
      • Bollihope District
Norman Wilson collection
    • Derbyshire
      • Derbyshire Dales District
Greg, R.P. (1851): A Description of Matlockite, a New Oxychloride of Lead. The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science: 2: 120-121. Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.;
Jones, J. (1982): Bulletin of the Peak District Mines Historical Society 8(4), 260-261; Ford, T.D., Sarjeant, W.A.S., and Smith, M.E. (1993): UK Journal of Mines and Minerals 13, 16-55
    • Staffordshire
      • Ecton
        • Back of Ecton
XRD Univesity of Manitoba 2011
USA
 
  • Arizona
    • Gila Co.
      • Globe-Miami Mining District
        • Globe Hills Mining District
          • Globe Hills
            • Burch area
              • 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 Mountains
          • Cababi Mining District (Comobabi Mining District)
            • Ko Vaya
              • Mildren Mine group
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 278, 291.
    • Pinal Co.
      • Mammoth Mining 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, Mineralogical Magazine: 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 Mining 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.; Frei, Martina (2005) Composition, formation, and leaching behaviour of supergene, polymetallic ores from the Sanyati deposit (Zimbabwe): A case study
 
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