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Fiedlerite

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Formula:
Pb3FCl4(OH) · H2O
System:
Monoclinic
Colour:
Colourless, white; ...
Lustre:
Adamantine
Hardness:
Name:
After K.G. Fiedler (1791-1853), Saxon Commissioner of Mines, and Director of an exploratory expedition to the Laurium region in 1835.
Two polytypes exist, Fiedlerite-1A and Fiedlerite-2M.


Classification of Fiedlerite

Approved, 'Grandfathered' (first described prior to 1959)
3.DC.10

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
10.3.2.1

10 : OXYHALIDES AND HYDROXYHALIDES
3 : A3(O,OH)2Xq
8.8.10

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

Physical Properties of Fiedlerite

Adamantine
Diaphaneity (Transparency):
Transparent
Colour:
Colourless, white; colourless in transmitted light.
Hardness (Mohs):
Cleavage:
Distinct/Good
On {100}.
Density:
5.88 g/cm3 (Measured)    5.64 g/cm3 (Calculated)

Optical Data of Fiedlerite

Type:
Biaxial (-)
RI values:
nα = 1.980 nβ = 2.040 nγ = 2.100
Max Birefringence:
δ = 0.120
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
strong

Chemical Properties of Fiedlerite

Formula:
Pb3FCl4(OH) · H2O
IMA Formula:
Pb3Cl4F(OH) · H2O
Elements listed in formula:

Crystallography of Fiedlerite

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Fiedlerite-1AFiedlerite-2M
Pb3Cl4F(OH) · H2O 
Triclinic Monoclinic 
1 - Pedial2/m - Prismatic
P1P21/b
 P21/a
a = 8.574(3) Å, b = 8.045(4) Å, c = 7.276(2) Å
α = 89.96(4)°, β = 102.05(4)°, γ = 103.45(4)°
a = 16.681(4) Å, b = 8.043(3) Å, c = 7.281(2) Å
β = 102.56(4)°
a:b:c = 1.066 : 1 : 0.904a:b:c = 2.074 : 1 : 0.905
V 476.76 ų
(Calculated from Unit Cell)
V 953.48 ų
(Calculated from Unit Cell)
  

Crystallographic forms of Fiedlerite

Crystal Atlas:
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Fiedlerite no.1 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Type Occurrence of Fiedlerite

Associated Minerals at Type Locality:

Relationship of Fiedlerite to other Species

3.DC.05LaurionitePbCl(OH)
3.DC.05ParalaurionitePbCl(OH)
3.DC.15PenfielditePb2Cl3(OH)
3.DC.20LaurelitePb7F12Cl2
3.DC.25Bismoclite(BiO)Cl
3.DC.25Daubréeite(BiO)(OH,Cl)
3.DC.25MatlockitePbFCl
3.DC.25RorisiteCaFCl
3.DC.25Zavaritskite(BiO)F
3.DC.25ZhangpeishaniteBaFCl
3.DC.30NadoritePbSbClO2
3.DC.30PeritePbBiClO2
3.DC.35AravaipaitePb3AlF9 · 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
8.8.1AbhuriteSn21Cl16(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)
8.8.11BlixitePb2(O,OH)2Cl
8.8.12PseudocotunniteK2PbCl4
8.8.13DiaboleitePb2CuCl2(OH)4
8.8.14PseudoboleitePb31Cu24Cl62(OH)48
8.8.15ChloroxiphitePb3CuO2Cl2(OH)2
8.8.17BideauxitePb2AgCl3(F,OH)2
8.8.18BoleiteKPb26Ag9Cu24(OH)48Cl62
8.8.19AravaipaitePb3AlF9 · H2O
8.8.20YedlinitePb6Cr3+Cl6(O,OH,H2O)8
8.8.21KolaritePbTeCl2
8.8.22HematophanitePb4Fe3O8(OH,Cl)

Other Names for Fiedlerite

Name in Other Languages:

Other Information

Other Information:
Becomes turbid when attacked by cold water. 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 Fiedlerite

Reference List:
vom Rath (1887) Berichte Niederrheinische Gesellschaft für Natur und Heilkunde, Bonn: 154.

vom Rath (1889) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: I: 388.

Smith (1899) Mineralogical Magazine: 12: 102.

de Schulten (1905) Comptes rendu de l’Académie des sciences de Paris: 140: 315.

Lacroix and de Schulten (1908) Bulletin de la Société française de Minéralogie: 31: 83.

Goldschmidt, V. (1918) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 4: 4.

Palache, C. (1934). The form relations of the lead oxychlorides, laurionite, paralaurionite, and fiedlerite. Mineralogical Magazine 23, 573-586.

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: 67-69.

Merlino, S., Pasero, M., Perchiazzi, N. (1994): Fiedlerite: revised chemical formula [Pb3Cl4F(OH).H2O], OD description and crystal structure refinement of the two MDO polytypes. Mineralogical Magazine: 58, 69-77.

American Mineralogist (1994): 79: 1014.

Internet Links for Fiedlerite

mindat.org URL:
https://www.mindat.org/min-1547.html
Please feel free to link to this page.

Localities for Fiedlerite

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.
(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).
Germany
 
  • North Rhine-Westphalia
    • Ruhr Coal Mining area
      • Essen
Weiss: "Mineralfundstellen, Deutschland West", 1990
Greece (TL)
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
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: 69; Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian, Laurion: The Minerals in the Ancient Slags; Grolig, H. & Grolig, E. (1978): Lavrion in Attika. Lapis, 3 (5), 16-25; 40 (in German).
        • Agios Nikolaos [St Nicholas] area
Fritz Schreiber collection (U. Kolitsch SXRD analysis)
        • Passa Limani area
Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals of 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).
        • Sounion area
van Kalmthout, P. (2012): De slakkenmineralen van Lavrion (Gr.) - Ontwikkelingen na 1996, inclusief een archeologische ontdekking. GEA, 45 (1), 14-19 (in Dutch); Fritz Schreiber collection; Uwe Kolitsch (SXRD-analysed)
Stephan Wolfsried 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
Italy
 
  • Latium
    • Rome Province
      • Anzio
Marco Bonifazi Collection
  • Tuscany
    • Livorno Province
      • Piombino
Cerutti, G. and Preite, D. (1995): Mineralien der etruskischen Schlacken von Baratti, Toskana. Lapis, 20 (4), 13-18; 50 (in German).
South Africa
 
  • Mpumalanga Province
    • Nkangala District
      • Delmas
Minerals of South Africa
UK
 
  • England
    • Cornwall
      • St Agnes District
        • Crantock
BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Mineral and/or Locality  
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