Nuffieldite
A valid IMA mineral species
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About Nuffieldite
Formula:
Cu1.4Pb2.4Bi2.4Sb0.2S7
According to several studies, Sb is an essential component for the stabilisation of nuffieldite.
Colour:
Shiny lead-gray to steel-gray on fresh surface, tarnishes to pale iridescent grayish green to reddish brown.
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
7.01
Crystal System:
Orthorhombic
Name:
Named in 1968 by Paul William Errol Kingston in honor of Professor Edward Wilfrid Nuffield [April 13, 1914 Gretna, Manitoba, Canada - June 10, 2006 Vancouver, British Columbia, Canada] mineralogist of the University of Toronto, Ontario, Canada.
Unique Identifiers
Mindat ID:
2941
Long-form identifier:
mindat:1:1:2941:0
GUID
(UUID V4):
(UUID V4):
2f1c85df-707c-4122-91a9-1fe9e0dff756
IMA Classification of Nuffieldite
Approved
IMA Formula:
Cu1.4Pb2.4Bi2.4Sb0.2S7
First published:
1968
Classification of Nuffieldite
2.JB.25g
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
3.3.4.1
3 : SULFOSALTS
3 : 3 <ø < 4
3 : SULFOSALTS
3 : 3 <ø < 4
5.7.10
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 IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Nuf | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Nuffieldite
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Physical Properties of Nuffieldite
Metallic
Transparency:
Opaque
Colour:
Shiny lead-gray to steel-gray on fresh surface, tarnishes to pale iridescent grayish green to reddish brown.
Streak:
Dark greenish gray to black.
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Very Good
Excellent parallel to [001] and indistinct perpendicular to [001].
Excellent parallel to [001] and indistinct perpendicular to [001].
Fracture:
Irregular/Uneven, Conchoidal
Density:
7.01(7) g/cm3 (Measured) 7.21 g/cm3 (Calculated)
Optical Data of Nuffieldite
Anisotropism:
strong, but with no color effects
Bireflectance:
weak - noticeable only in contact with other grains.
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 35.9% | 45.5% |
420nm | 36.7% | 44.6% |
440nm | 37.2% | 45.9% |
460nm | 37.4% | 46.3% |
480nm | 37.8% | 46.6% |
500nm | 38.1% | 46.6% |
520nm | 37.7% | 46.6% |
540nm | 37.8% | 46.3% |
560nm | 37.7% | 46.2% |
580nm | 37.5% | 46.1% |
600nm | 37.3% | 45.8% |
620nm | 36.9% | 45.4% |
640nm | 36.9% | 45.1% |
660nm | 36.5% | 44.9% |
680nm | 36.7% | 44.4% |
700nm | 36.2% | 44.0% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 46.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
light gray
Internal Reflections:
none
Pleochroism:
Non-pleochroic
Chemistry of Nuffieldite
Mindat Formula:
Cu1.4Pb2.4Bi2.4Sb0.2S7
According to several studies, Sb is an essential component for the stabilisation of nuffieldite.
According to several studies, Sb is an essential component for the stabilisation of nuffieldite.
Crystallography of Nuffieldite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 14.61 Å, b = 21.38 Å, c = 4.03 Å
Ratio:
a:b:c = 0.683 : 1 : 0.188
Unit Cell V:
1,258.82 ų (Calculated from Unit Cell)
Comment:
Non-standard space-group setting Pbnm
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0005532 | Nuffieldite | Moelo Y, Meerschaut A, Makovicky E (1997) Refinement of the crystal structure of nuffieldite, Pb2Cu1.4(Pb.4Bi.4Sb.2)Bi2S7: Structural relationships and genesis of complex lead sulfosalt structures The Canadian Mineralogist 35 1497-1508 | 1997 | 0 | 293 | ||
0017790 | Nuffieldite | Kohatsu I, Wuensch B J (1973) The crystal structure of nuffieldite, Pb2Cu(Pb,Bi)Bi2S7 Zeitschrift fur Kristallographie 138 343-365 | 1973 | Alice Arm, British Columbia, Canada | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.66 Å | (100) |
3.54 Å | (100) |
4.00 Å | (90) |
3.16 Å | (80) |
2.54 Å | (70) |
1.871 Å | (60) |
1.349 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Nuffieldite
General Appearance of Type Material:
Prismatic to acicular crystals, deeply striated parallel to [001]. The crystals frequently occur as bundles of parallel unterminated needles (to 3 mm) in the vugs.
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, Canada, 13448.
Royal Ontario Museum, Toronto, Canada.
Royal Ontario Museum, Toronto, Canada.
Geological Setting of Type Material:
In quartz veins in quartz diorite.
Associated Minerals at Type Locality:
Reference:
Kingston, P.W. (1968): Studies of mineral sulphosalts. XXI. Nuffieldite, a new species. The Canadian Mineralogist: 9: 439-452.
Synonyms of Nuffieldite
Other Language Names for Nuffieldite
German:Nuffieldit
Russian:Нафилдит
Simplified Chinese:硫铋铜铅矿
Spanish:Nuffieldita
Traditional Chinese:硫鉍銅鉛礦
Varieties of Nuffieldite
Argentonuffieldite | Silver-bearing variety of nuffieldite. Analysis by Voudouris (2005) in fact corresponds to Ag-dominant material. |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
2.JB. | Senandorite | AgPbSb3S6 |
2.JB. | Oscarkempffite | Ag10Pb4(Sb17Bi9)S48 |
2.JB. | Chukotkaite | AgPb7Sb5S15 |
2.JB. | Arsenquatrandorite | Ag17.6Pb12.8Sb38.1As11.5S96 |
2.JB. | Clino-oscarkempffite | Ag15Pb6Sb21Bi18S72 |
2.JB. | Andreadiniite | CuHgAg7Pb7Sb24S48 |
2.JB. | Ginelfite | Ag2(Ag0.5Fe)TlPb23.5(Sb,As)33.5S76 |
2.JB. | Lazerckerite | Ag3.75Pb4.50(Sb7.75Bi4)S24 |
2.JB. | Lasmanisite | Ag12Pb13Mn11Sb44S96 |
2.JB. | Montpelvouxite | AgPb16Sb27As18S84 |
2.JB. | Selenojunoite | Cu2Pb3Bi8Se16 |
2.JB.05 | Diaphorite | Ag3Pb2Sb3S8 |
2.JB.10 | Cosalite | Pb2Bi2S5 |
2.JB.15 | Freieslebenite | AgPbSbS3 |
2.JB.15 | Marrite | AgPbAsS3 |
2.JB.20 | Cannizzarite | Pb48Bi56S132 |
2.JB.20 | Wittite | Pb9Bi12(S,Se)27 |
2.JB.25a | Junoite | Cu2Pb3Bi8(S,Se)16 |
2.JB.25i | Neyite | Ag2Cu6Pb25Bi26S68 |
2.JB.25c | Nordströmite | CuPb3Bi7(Se4S10) |
2.JB.25d | Proudite | CuPb7.5Bi9.33(S,Se)22 |
2.JB.25h | Weibullite | Pb5Bi8Se7S11 |
2.JB.25b | Felbertalite | Cu2Pb6Bi8S19 |
2.JB.25j | Rouxelite | Cu2HgPb23Sb27S65.5 |
2.JB.25f | Ángelaite | Cu2AgPbBiS4 |
2.JB.25i | Cuproneyite | Cu7Pb27Bi25S68 |
2.JB.30a | Geocronite | Pb14Sb6S23 |
2.JB.30a | Jordanite | Pb14As6S23 |
2.JB.30b | Kirkiite | Pb10Bi3As3S19 |
2.JB.30c | Tsugaruite | Pb28As15S50Cl |
2.JB.30a | Marcobaldiite | Pb12(Sb3As2Bi)Σ6S21 |
2.JB.30a | Arsenmarcobaldiite | Pb12(As3.2Sb2.8)Σ6S21 |
2.JB.35c | Pillaite | Pb9Sb10S23ClO0.5 |
2.JB.35a | Zinkenite | Pb9Sb22S42 |
2.JB.35b | Scainiite | Pb14Sb30S54O5 |
2.JB.35d | Pellouxite | (Cu,Ag)Pb10Sb12S27O(Cl,S)0.6 |
2.JB.35f | Tubulite | Ag2Pb22Sb20S53 |
2.JB.35e | Chovanite | Pb15-2xSb14+2xS36Ox (x ~ 0.2) |
2.JB.40b | Aschamalmite | Pb6-3xBi2+xS9 |
2.JB.40a | Bursaite | Pb5Bi4S11 (?) |
2.JB.40b | Eskimoite | Ag7Pb10Bi15S36 |
2.JB.40a | Fizélyite | Ag5Pb14Sb21S48 |
2.JB.40a | Gustavite | AgPbBi3S6 |
2.JB.40a | Lillianite | Pb3-2xAgxBi2+xS6 |
2.JB.40c | Ourayite | Ag3Pb4Bi5S13 |
2.JB.40a | Ramdohrite | Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24 |
2.JB.40a | Roshchinite | Ag19Pb10Sb51S96 |
2.JB.40d | Schirmerite | PbAgBi3S6 - Pb3Ag1.5Bi3.5S9 |
2.JB.40a | Treasurite | Ag7Pb6Bi15S32 |
2.JB.40a | Uchucchacuaite | AgMnPb3Sb5S12 |
2.JB.40e | Ustarasite | Pb(Bi,Sb)6S10 (?) |
2.JB.40a | Vikingite | Ag5Pb8Bi13S30 |
2.JB.40a | Xilingolite | Pb3Bi2S6 |
2.JB.40b | Heyrovskýite | Pb6Bi2S9 |
2.JB.40 | UM1988-05-S:AgBiCuHgPb | (Hg,Ag,Cu,Pb)5Pb5Bi11S27 |
2.JB.40 | UM1988-06-S:AgBiCuHgPb | (Pb,Hg)12(Cu,Ag)3(Bi,Sb)10(S,Te)27 |
2.JB.40a | Quatrandorite | AgPbSb3S6 |
2.JB.40a | Menchettiite | AgPb2.40Mn1.60Sb3As2S12 |
2.JB.40a | Terrywallaceite | AgPb(Sb,Bi)3S6 |
2.JB.40a | Jasrouxite | Ag16Pb4(Sb24As16)S72 |
2.JB.40a | Erzwiesite | Ag8Pb12Bi16S40 |
2.JB.40a | Staročeskéite | Ag0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6 |
2.JB.40a | Oyonite | Ag3Mn2Pb4Sb7As4S24 |
2.JB.40a | Holubite | Ag3Pb6(Sb8Bi3)S24 |
2.JB.40b | Baiamareite | Ag4Pb12Fe4Sb20S48 |
2.JB.55 | Gratonite | Pb9As4S15 |
2.JB.60 | Marrucciite | Hg3Pb16Sb18S46 |
2.JB.65 | Vurroite | Pb20Sn2(Bi,As)22S54Cl6 |
2.JB.65 | Tazieffite | Pb20Cd2(As,Bi)22S50Cl10 |
2.JB.70 | Daliranite | PbHgAs2S5 |
Other Information
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 Nuffieldite
mindat.org URL:
https://www.mindat.org/min-2941.html
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References for Nuffieldite
Reference List:
Števko, Martin, Sejkora, Jiří, Dojčanský, Ľudovít (2021) New data on sulphosalts from hydrothermal siderite-type veins in the Spišsko-gemerské rudohorie Mts. (eastern Slovakia): 1. Nuffieldite and aikinite from Slovinky-Došťavná vein. Bulletin Mineralogie Petrologie, 29 (1) Bulletin Mineralogie Petrologie. 108-114 doi:10.46861/bmp.29.108
Localities for Nuffieldite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia | |
| Mueller +3 other references |
Canada (TL) | |
| KINGSTON (1968) |
| Harris et al. (1984) |
China | |
| Zhao et al. (1999) |
| Binghui Chen et al. (1994) |
| Xia Ai and Zengyi Chen (1993) |
France | |
| structural relationship and genesis of complex lead sulfosalt structures. The Canadian Mineralogist (6) +2 other references |
Greece | |
| P. Voudouris (2005) +1 other reference |
P. Voudouris (2005) +1 other reference | |
Japan | |
| Izumino et al. (2014) |
Kazakhstan | |
| Spiridonov (1982) |
| Mozgova et al. (1994) |
Mexico | |
| Querol +1 other reference |
| Lapis 2001 (1) |
Norway | |
| Ellingsen et al. (2000) |
Poland | |
| Pieczka A. +2 other references |
Romania | |
| Cook et al. (2002) |
| Cook et al. (2002) |
Cook et al. (2002) | |
Szakáll (2002) | |
| Mitt. .Österr. Miner. Ges. 143 (1998) |
Cook (1997) | |
Russia | |
| Mozgova et al. (1994) |
| Volkov et al. (2013) |
| Gaskova et al. (2018) +1 other reference |
Serbia | |
Radosavljević et al. (2016) | |
Slobodan A. Radosavljević et al. (2016) | |
Slovakia | |
| Pršek J. & Ozdín D. (Pb,Bi) |
| Pršek et al. (2004) +1 other reference |
| Pršek J. et al. (2006) |
Števko M. et al. (2021) | |
| Pršek J. & Ozdín D. (Pb,Bi) |
Pršek J. & Ozdín D. (Pb,Bi) | |
Spain | |
| Bocamina (4) |
| Almodóvar et al. (1998) |
Switzerland | |
| Ansermet (2012) |
USA | |
| Eckel et al. (1997) |
| www.excaliburmineral.com |
| RRUFF Database : Specimen I.D 110088 |
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