Friedrichite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Friedrichite
Othmar M. Friedrich
Formula:
Pb5Cu5Bi7S18
Colour:
Silver-grey
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
6.98
Crystal System:
Orthorhombic
Name:
Named in honor of Professor Dr.-Ing. Othmar Michael Friedrich (18 December 1902 - 12 May 1991), Mining University, Leoben, Styria, Austria. Friedrich devoted his research almost entirely to the ore deposits of the Eastern Alps.
Unique Identifiers
Mindat ID:
1610
Long-form identifier:
mindat:1:1:1610:6
IMA Classification of Friedrichite
Approved
IMA Formula:
Cu5Pb5Bi7S18
Approval year:
1977
First published:
1978
Classification of Friedrichite
2.HB.05a
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb
3.4.5.5
3 : SULFOSALTS
4 : Ăž = 3
3 : SULFOSALTS
4 : Ăž = 3
5.7.8
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Frd | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Frd | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Friedrichite
Metallic
Transparency:
Opaque
Colour:
Silver-grey
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN50=224 kg/mm2 - Vickers
Density:
6.98 g/cm3 (Measured) 7.06 g/cm3 (Calculated)
Optical Data of Friedrichite
Anisotropism:
Strong in oil, distinct in air
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 470nm | 41.0% | 46.7% |
| 546nm | 40.1% | 46.2% |
| 589nm | 39.9% | 45.8% |
| 650nm | 39.9% | 45.6% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 46.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Creamy yellow whitish in air, in oil more pinkish
Chemistry of Friedrichite
Mindat Formula:
Pb5Cu5Bi7S18
Element Weights:
Elements listed:
Crystallography of Friedrichite
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 33.84(6) Å, b = 11.65(7) Å, c = 4.01(3) Å
Ratio:
a:b:c = 2.905 : 1 : 0.344
Unit Cell V:
1,580.89 Ă
Âł (Calculated from Unit Cell)
Z:
2
Morphology:
Isolated columnar crystals, granular aggregates
Comment:
Space Group: P b21m.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.644 Ă | (100) |
| 3.584 Ă | (100) |
| 3.161 Ă | (100) |
| 2.850 Ă | (80) |
| 4.05 Ă | (40) |
| 2.577 Ă | (40) |
| 1.979 Ă | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Friedrichite
General Appearance of Type Material:
Isolated crystals or, more commonly, as aggregates of granular shaped to column-like crystals, 0.2 to more than 1.5 mm in size.
Place of Conservation of Type Material:
Institute of Mineralogy, University of Salzburg, Salzburg, Austria.
Joanneum Provincial Museum, Graz, Styria, Austria.
Canadian Geological Survey, Ottawa, Ontario, Canada.
Royal Ontario Museum, Toronto, Ontario, Canada.
The Natural History Museum, London, England, 1982,574
Harvard University, Cambridge, Massachusetts, USA, 117007.
National Museum of Natural History, Washington, D.C., USA, 144072, 144185.
Joanneum Provincial Museum, Graz, Styria, Austria.
Canadian Geological Survey, Ottawa, Ontario, Canada.
Royal Ontario Museum, Toronto, Ontario, Canada.
The Natural History Museum, London, England, 1982,574
Harvard University, Cambridge, Massachusetts, USA, 117007.
National Museum of Natural History, Washington, D.C., USA, 144072, 144185.
Geological Setting of Type Material:
From quartz vein found on a scree slope. Surrounding rocks are metamorphic. Schists and gneisses. Emeralds are also found in the area.
Associated Minerals at Type Locality:
Synonyms of Friedrichite
Other Language Names for Friedrichite
Dutch:Friedrichiet
German:Friedrichit
Simplified Chinese:ćŒçĄ«éé
éçż
Spanish:Friedrichita
Traditional Chinese:ćŒçĄ«ééé
瀊
Common Associates
Associated Minerals Based on Photo Data:
| 8 photos of Friedrichite associated with Hammarite | Pb2Cu2Bi4S9 |
| 5 photos of Friedrichite associated with Lindströmite | Pb3Cu3Bi7S15 |
| 4 photos of Friedrichite associated with Krupkaite | PbCuBi3S6 |
| 3 photos of Friedrichite associated with Quartz | SiO2 |
| 3 photos of Friedrichite associated with Aikinite | PbCuBiS3 |
| 3 photos of Friedrichite associated with Siderite | FeCO3 |
| 3 photos of Friedrichite associated with Pyrite | FeS2 |
| 2 photos of Friedrichite associated with Dickite | Al2(Si2O5)(OH)4 |
| 2 photos of Friedrichite associated with Sericite | KAl2(AlSi3O10)(OH)2 |
| 1 photo of Friedrichite associated with Native Bismuth | Bi |
Related Minerals - Strunz-mindat Grouping
| 2.HB. | Barikaite | Ag3Pb10(Sb8As11)S40 |
| 2.HB. | Carducciite | (Ag2Sb2)Pb12(As,Sb)16S40 |
| 2.HB. | Sardashtite | Ag9Cu2.5Pb41Sb36.5As7S112 |
| 2.HB. | Interliveingite | AgPb18As25S56 |
| 2.HB. | Reckibachite | Ag2Pb12As14Sb4S40 |
| 2.HB.05a | Salzburgite | Pb1.6Cu1.6Bi6.4S12 |
| 2.HB.05a | Hammarite | Pb2Cu2Bi4S9 |
| 2.HB.05c | JaskĂłlskiite | CuxPb2+x(Sb,Bi)2-xS5 (x ~ 0.15) |
| 2.HB.05 | UM1990-54-Se:BiCuPb | CuPb(Ni,Co)0.3Bi3Se6 |
| 2.HB.05a | Aikinite | PbCuBiS3 |
| 2.HB.05a | Pekoite | PbCuBi11S18 |
| 2.HB.05b | Meneghinite | Pb13CuSb7S24 |
| 2.HB.05a | Paarite | Pb1.7Cu1.7Bi6.3S12 |
| 2.HB.05a | Lindströmite | Pb3Cu3Bi7S15 |
| 2.HB.05a | Emilite | Pb2.7Cu2.7Bi5.3S12 |
| 2.HB.05a | Gladite | PbCuBi5S9 |
| 2.HB.05a | Krupkaite | PbCuBi3S6 |
| 2.HB.05 | UM2000-46-S:BiCuPb | Cu0.33Pb0.33Bi7.67S12 |
| 2.HB.10b | Izoklakeite | Pb27(Cu,Fe,Ag)2(Sb,Bi)19S57 |
| 2.HB.10c | Eclarite | (Cu,Fe)Pb9Bi12S28 |
| 2.HB.10a | Tintinaite | Pb22Cu4(Sb,Bi)30S69 |
| 2.HB.10b | Giessenite | Pb27Cu2(Bi,Sb)19S57 |
| 2.HB.10a | Kobellite | Pb22Cu4(Bi,Sb)30S69 |
| 2.HB.15 | Jamesonite | Pb4FeSb6S14 |
| 2.HB.15 | Benavidesite | Pb4MnSb6S14 |
| 2.HB.20a | NagyĂĄgite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
| 2.HB.20b | Buckhornite | AuPb2BiTe2S3 |
| 2.HB.20e | Luxembourgite | AgCuPbBi4Se8 |
| 2.HB.20b | Jaszczakite | [Bi3S3][AuS2] |
| 2.HB.20d | Berryite | Cu3Ag2Pb3Bi7S16 |
| 2.HB.20e | Watkinsonite | Cu2PbBi4(Se,S,Te)8 |
| 2.HB.20c | Museumite | [Pb2(Pb,Sb)2S8][(Te,Au)2] |
| 2.HB.20e | Litochlebite | Ag2PbBi4Se8 |
| 2.HB.25 | Meerschautite | (Ag,Cu)6Pb43-2xSb44+2xS112Ox (x ~0.5) |
Other Information
Notes:
HNO3 (1:1) burns with effervescence and darkens the surface with seconds. FeCl3 (20%) gives a light brown stain. 1:1 HCl shows no effect.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Friedrichite
mindat.org URL:
https://www.mindat.org/min-1610.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Friedrichite
Reference List:
Fleischer, Michael, Chao, George Y., Mandarino, J. A. (1979) New mineral names. American Mineralogist, 64 (5-6) 652-659
Shimizu, M., Kato, A., Cioflica, G., Lupulescu, M., Shimizu, M. (1998) Friedrichite from BÄiĆŁa Bihor, Romania. The Canadian Mineralogist, 36 (3) 861-868
Topa, Dan, Makovicky, Emil, Paar, Werner H. (2002) Composition ranges and exsolution pairs for the members of the bismuthinite-aikinite series from Felbertal, Austria. The Canadian Mineralogist, 40 (3) 849-869 doi:10.2113/gscanmin.40.3.849
IZUMINO, Yuya, NAKASHIMA, Kazuo, NAGASHIMA, Mariko (2014) Cuprobismutite group minerals (cuprobismutite, hodruĆĄhite, kupÄĂkite and padÄraite), other Biâsulfosalts and Biâtellurides from the Obari mine, Yamagata Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 109 (4) 177-190 doi:10.2465/jmps.140129
Localities for Friedrichite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Testa et al. (2018) |
Australia | |
| Wormald (1993) |
Austria | |
| Kolitsch et al. (2008) |
| Chen et al. (1978) |
| Strasser (1989) |
Bulgaria | |
| Kolkovski B et al. (2003) |
| Todorov (1990) |
| Bogdanov et al. (2004) |
| www.bgd.bg (n.d.) +1 other reference |
China | |
| Xiangping et al. (2001) |
| Zhou et al. (2018) |
Czech Republic | |
| Sejkora (1998) |
France | |
| Moëlo (1990) |
Germany | |
| Schwarzmeier et al. (2015) +2 other references |
Hungary | |
| collector: LĂĄszlĂł TĂłth +1 other reference |
Iran | |
| Tale Fazel et al. (2023) |
| Maghfouri et al. (2016) +1 other reference |
| Mousavi Motlagh et al. (2024) |
Italy | |
| - (n.d.) |
Japan | |
| IMAI et al. (1999) +1 other reference |
| IZUMINO et al. (2014) |
Kazakhstan | |
| Efimov A.V. Bismuthian mineralisation ... +1 other reference |
Myanmar | |
| Aung Myo et al. (2019) +1 other reference |
North Macedonia | |
| Petrunov et al. (2001) +2 other references |
| Serafimovski et al. (2016) | |
Norway | |
| Husdal et al. (2020) |
| Larsen et al. (2018) |
| Larsen et al. (2018) | |
Peru | |
| Crowley et al. (1997) |
Poland | |
| GoĆÄbiowska et al. (2006) +1 other reference |
| Mochnacka et al. (2015) +1 other reference |
Romania | |
| Shimizu et al. (1998) |
| Shimizu et al. (1998) | |
| Shimizu et al. (1998) | |
| Shimizu et al. (1998) | |
| Cook (1998) |
Russia | |
| Rogov et al. (2023) |
| Rogov et al. (2023) | |
| Redin et al. (2015) +1 other reference |
Slovakia | |
| ÄuÄa R. et al. (1993) |
| PrĆĄek et al. (2001) |
| JeleĆ et al. (2012) |
| BeĆka J. (1994) |
| Martin Ć tevko-unpublished |
| OzdĂn et al. (1999) |
| Majzlan et al. (1995) | |
| OzdĂn D. (2003) | |
Sweden | |
| Anthony et al. (1990) |
Switzerland | |
| Schweizer Strahler |
| Locality description |
Tajikistan | |
| ĐŻŃĐžĐŒĐŸĐČ et al. (2019) +1 other reference |
UK | |
| Lowry et al. (1994) |
USA | |
| Anthony et al. (1995) |
| Mineral News: 16 (9) +3 other references |
| Eckel et al. (1997) |
| Berke et al. (2023) |
| Foord et al. (1989) +1 other reference |
| Economic Geology (1996) +1 other reference |
| Castor et al. (2004) |
| PXRD and EDS by Inna Lykova |
| Anthony et al. (1990) |
| Virginia T. McLemore et al. (2000) |
| Anthony et al. (1990) |
Uzbekistan | |
| Kovalenker et al. (1997) |
Quick NavTopAbout FriedrichiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Barbora adit, Knöttel area, Krupka, Teplice District, ĂstĂ nad Labem Region, Czech Republic