Fülöppite
A valid IMA mineral species - grandfathered
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About Fülöppite
Béla Fülöpp
Formula:
Pb3Sb8S15
May contain minor As replacing Sb.
Colour:
Lead grey, tarnishing to steel blue or bronzy
Lustre:
Metallic
Hardness:
2½
Specific Gravity:
5.23
Crystal System:
Monoclinic
Member of:
Name:
For Dr. Bela Fülöpp, (1863-1938) Hungarian lawyer, statesman and mineral collector and patron to the Hungarian National Museum who sent the mineral for description.
Type Locality:
Fülöppite is a rare mineral in a homologous series with heteromorphite, plagionite and semseyite. Their structures differ by the thickness of a galena sheet in the structure. Fülöppite has the thinnest such sheet.
May be confused with plagionite.
May be confused with plagionite.
Name Encoding
ASCII-7:
Fuloppite
Unique Identifiers
Mindat ID:
1559
Long-form identifier:
mindat:1:1:1559:8
IMA Classification of Fülöppite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1929
Classification of Fülöppite
2.HC.10a
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
3.6.20.1
3 : SULFOSALTS
6 : 2 < ø < 2.49
3 : SULFOSALTS
6 : 2 < ø < 2.49
5.6.7
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
6 : Sulpharsenites etc. of Pb alone
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
6 : Sulpharsenites etc. of Pb alone
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Fül | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Fülöppite
Metallic
Transparency:
Opaque
Colour:
Lead grey, tarnishing to steel blue or bronzy
Streak:
Reddish grey
Hardness:
2½ on Mohs scale
Hardness:
VHN100=140 - 157 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
none
none
Fracture:
Irregular/Uneven
Density:
5.23 g/cm3 (Measured) 5.19 g/cm3 (Calculated)
Optical Data of Fülöppite
Anisotropism:
Moderate - blue-green to red-brown
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 37.8% | 45.9% |
| 420nm | 37.6% | 45.7% |
| 440nm | 37.3% | 45.2% |
| 460nm | 37.1% | 44.6% |
| 480nm | 37.0% | 44.0% |
| 500nm | 36.7% | 43.4% |
| 520nm | 36.3% | 42.6% |
| 540nm | 36.1% | 42.0% |
| 560nm | 35.9% | 41.3% |
| 580nm | 35.4% | 40.5% |
| 600nm | 34.6% | 39.3% |
| 620nm | 33.6% | 38.1% |
| 640nm | 32.5% | 36.9% |
| 660nm | 31.6% | 35.9% |
| 680nm | 30.8% | 35.1% |
| 700nm | 30.1% | 34.4% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 45.9%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White
Chemistry of Fülöppite
Mindat Formula:
Pb3Sb8S15
May contain minor As replacing Sb.
May contain minor As replacing Sb.
Element Weights:
Elements listed:
Crystallography of Fülöppite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 13.441 Å, b = 11.726 Å, c = 16.930 Å
β = 94.71(8)°
β = 94.71(8)°
Ratio:
a:b:c = 1.146 : 1 : 1.444
Unit Cell V:
2,659.31 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Pyramidal and short prismatic [201]; 112} striated parallel [110]; {100} striated parallel to [010]. Thick tabular {001}, rare. Crystals often curved.
Twinning:
None
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.25 Å | (50) |
| 3.89 Å | (100) |
| 3.23 Å | (70) |
| 3.20 Å | (90) |
| 2.919 Å | (80) |
| 2.822 Å | (80) |
| 2.749 Å | (70) |
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 Fülöppite
General Appearance of Type Material:
Found in no. III level on the main lode of the Kereszthegy mine at Nagybanya, comitat Szatmar [now Baia Mare, Satul-Mare, Romania].
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1929,248.
Geological Setting of Type Material:
Hydrothermal
Associated Minerals at Type Locality:
Other Language Names for Fülöppite
Relationship of Fülöppite to other Species
Member of:
Other Members of Plagionite Group:
| Heteromorphite | Pb7Sb8S19 | Mon. 2/m : B2/b |
| Plagionite | Pb5Sb8S17 | Mon. 2/m : B2/b |
| Semseyite | Pb9Sb8S21 | Mon. 2/m : B2/b |
Common Associates
Associated Minerals Based on Photo Data:
| 21 photos of Fülöppite associated with Jamesonite | Pb4FeSb6S14 |
| 17 photos of Fülöppite associated with Sphalerite | ZnS |
| 12 photos of Fülöppite associated with Pyrite | FeS2 |
| 8 photos of Fülöppite associated with Calcite | CaCO3 |
| 8 photos of Fülöppite associated with Dawsonite | NaAlCO3(OH)2 |
| 8 photos of Fülöppite associated with Semseyite | Pb9Sb8S21 |
| 8 photos of Fülöppite associated with Dolomite | CaMg(CO3)2 |
| 5 photos of Fülöppite associated with Stibnite | Sb2S3 |
| 4 photos of Fülöppite associated with Boulangerite | Pb5Sb4S11 |
| 3 photos of Fülöppite associated with Pyrargyrite | Ag3SbS3 |
Related Minerals - Strunz-mindat Grouping
| 2.HC. | Bernarlottiite | Pb6(As5Sb3)S18 |
| 2.HC. | Huntingdonite | Pb19Sb16As6S51Cl2 |
| 2.HC. | Moiraite | Pb12Sb8As8S36 |
| 2.HC.05f | Parapierrotite | TlSb5S8 |
| 2.HC.05g | Marumoite | Pb32As40S92 |
| 2.HC.05b | Baumhauerite II | |
| 2.HC.05d | Rathite | Ag2Pb12-xTlx/2As18+x/2S40 |
| 2.HC.05e | Heptasartorite | Tl7Pb22As55S108 |
| 2.HC.05d | Dufrénoysite | Pb2As2S5 |
| 2.HC.05e | Hendekasartorite | Tl2Pb48As82S172 |
| 2.HC.05b | Argentobaumhauerite | Ag1.5Pb22As33.5S72 |
| 2.HC.05c | Argentoliveingite | Ag3+xPb36-2xAs51+xS112 |
| 2.HC.05b | Baumhauerite | Pb12As16S36 |
| 2.HC.05d | Veenite | Pb16Sb9-xAs7+xS40, x ~ 0-0.5 |
| 2.HC.05e | Dekatriasartorite | TlPb58As97S204 |
| 2.HC.05a | Hyršlite | Pb8As10Sb6S32 |
| 2.HC.05e | Incomsartorite | Tl6Pb144As246S516 |
| 2.HC.05c | Liveingite | Pb20As24S56 |
| 2.HC.05c | Johnjamborite | Pb14Sb8.5As7.5S38 |
| 2.HC.05f | Pierrotite | Tl2(Sb,As)10S16 |
| 2.HC.05d | Rathite-IV | PbAs2S4 |
| 2.HC.05d | Argentodufrénoysite | Ag3Pb26As35S80 |
| 2.HC.05e | Écrinsite | AgTl3Pb4As11Sb9S36 |
| 2.HC.05a | Sartorite | PbAs2S4 |
| 2.HC.05a | Twinnite | Pb0.8Tl0.1Sb1.3As0.8S4 |
| 2.HC.05f | Philrothite | TlAs3S5 |
| 2.HC.05h | Polloneite | AgPb46As26Sb23S120 |
| 2.HC.05a | Guettardite | Pb8(Sb0.56As0.44)16S32 |
| 2.HC.10d | Semseyite | Pb9Sb8S21 |
| 2.HC.10d | Rayite | Pb8(Ag,Tl)2Sb8S21 |
| 2.HC.10c | Heteromorphite | Pb7Sb8S19 |
| 2.HC.10b | Plagionite | Pb5Sb8S17 |
| 2.HC.15 | Falkmanite | Pb3Sb2S6 |
| 2.HC.15 | Boulangerite | Pb5Sb4S11 |
| 2.HC.20 | Robinsonite | Pb4Sb6S13 |
| 2.HC.25 | Moëloite | Pb6Sb6S14(S3) |
| 2.HC.30 | Dadsonite | Pb23Sb25S60Cl |
| 2.HC.35 | Zoubekite | AgPb4Sb4S10 |
| 2.HC.35 | Proto-owyheeite | Ag9Pb40Sb45S112 |
| 2.HC.35 | Owyheeite | Ag3Pb10Sb11S28 |
| 2.HC.40 | Parasterryite | Ag4Pb20Sb14As10S58 |
| 2.HC.50 | Lopatkaite | Pb5Sb3AsS11 |
Other Information
Notes:
With KOH (40 %) acting for 60 seconds a slight brown tarnish was formed, which was easily wiped off with a wet rag, the mineral not being attacked. With aqua regia a brownish-yellow, later bluish, tarnish is developed in 20 seconds; this can be rubbed off, the surface then being grey. After longer action (50-60 seconds) the mineral becomes dark grey with here and there minute yellowish specks.
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 Fülöppite
mindat.org URL:
https://www.mindat.org/min-1559.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Fülöppite
Reference List:
Finály, I. de, Koch, Sándor (1929) Fülöppite, a new Hungarian mineral of the plagionite-semseyite group. Mineralogical Magazine and Journal of the Mineralogical Society, 22 (127) 179-184 doi:10.1180/minmag.1929.022.127.03
Edenharter, A.; Nowacki, W. (1974) Die Kristallstruktur von Fülöppit Pb3Sb8S15 [The crystal structure of fülöppite Pb3Sb8S15]. Neues Jahrbuch für Mineralogie - Monatshefte, 1974 (2). 92-94 doi:10.1127/njmm/1974/1974/92
Edenharter, A., Nowacki, W. (1975) Die Kristallstruktur von Fülöppit (Sb8S15|PbVIIIPb2VII). Zeitschrift für Kristallographie, 142 (3-4). 196-215 doi:10.1524/zkri.1975.142.3-4.196
Localities for Fülöppite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - 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.
Bolivia | |
| Dill et al. (1995) +1 other reference |
Bulgaria | |
| [MinRec 22 p.439] |
Canada | |
| Wilson (1991) |
China | |
| Mineral Deposits 4 (1) |
Czech Republic | |
| Žáček et al. (1992) |
| Gramblička (n.d.) |
| Sejkora J et al. (2020) |
Finland | |
| Joy Desor analysis (SEM-EDS, PXRD and SXRD) |
France | |
| Anthony et al. (1990) |
| Périchaud (1968) |
| Pélisson (1989) |
| Pélisson (1989) |
| Pélisson (1989) |
| Périchaud (1968) |
| Analysed by Nicolas MEISSER |
| Marcoux et al. (1988) |
| Anthony et al. (1990) |
| Chauris (2014) | |
| Y. Moëlo |
| Wittern et al. (1997) |
| Gatellier et al. (1990) |
| Berbain et al. (2005) |
| Anthony et al. (1990) |
| Inventaire Minéralogique de la France Numéro 14 ( Lozère ) |
| Inventaire Minéralogique de la France Numéro 14 ( Lozère ) | |
| Fourcault (1991) |
Germany | |
| Walenta (1992) |
| Walenta (1992) |
| Walenta (1992) | |
| Walenta (1989) +1 other reference | |
| Walenta (1989) +1 other reference |
| Walenta (1994) |
| Björn Fritzke et al. (2021) |
| Gröbner et al. (2011) |
| Gröbner et al. (2011) | |
| Martin (1994) |
| Wittern (2001) |
Greece | |
| Rieck et al. (1999) |
| Uwe Kolitsch & Branko Rieck (unpubl. SEM-EDS results) |
| Rieck (n.d.) | |
| Uwe Kolitsch & Branko Rieck (unpubl. SEM-EDS results) | |
| Kanellopoulos et al. (2024) |
Kazakhstan | |
| Pekov (1998) |
Luxembourg | |
| Filella et al. (2009) |
Poland | |
| Nejbert et al. (2014) |
Portugal | |
| Alves (n.d.) |
Romania | |
| Nickel & Nichols +1 other reference |
| Damian +8 other references |
| Mârza +6 other references | |
| Gábor Koller collection (EDS- and PXRD-analysed by Sándor Szakáll and Béla Fehér) | |
| collected: Gábor Koller | |
Russia | |
| Volkov et al. (2013) |
| Ivashchenko (2024) |
| Spiridonov et al. (2010) |
Serbia | |
| Slobodan A. Radosavljević et al. (2013) +1 other reference | |
| Radosavljević +3 other references |
Slovakia | |
| Lalinská et al. (2006) |
| Maťo et al. (stredné Slovensko) |
| Klimko et al. (2009) |
| Martin Števko-unpublished |
| Pauliš |
| Bakoš |
| Bakoš | |
| Chovan et al. (1995) |
Spain | |
| Rewitzer et al. (2019) |
| LAN1 |
| Philip Bluemner photo |
UK | |
| Fortey et al. (1984) +3 other references |
| Cooper et al. (1990) +1 other reference | |
Ukraine | |
| [World of Stones 12:20] |
USA | |
| Rocks & Min.: 63:123. |
| Eckel et al. (1997) |
Dealul Crucii adit, Baia Mare, Maramureș County, Romania