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Pizgrischite

A valid IMA mineral species
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About PizgrischiteHide

Formula:
(Cu,Fe)Cu14PbBi17S35
Colour:
Lead grey
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
6.58 (Calculated)
Crystal System:
Monoclinic
Name:
Named after type locality.
Pizgrischite belongs to the cuprobismutite series of bismuth sulfosalts but, sensu stricto, it is not a homologue of cuprobismutite.


Unique IdentifiersHide

Mindat ID:
11109
Long-form identifier:
mindat:1:1:11109:2
GUID
(UUID V4):
11abc802-6f64-43d5-acc2-f088b1719bdb

Classification of PizgrischiteHide

Approved
Approval year:
2001
First published:
2007
2.JA.10d

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
PizIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PizgrischiteHide

Metallic
Transparency:
Opaque
Colour:
Lead grey
Streak:
Grey-black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN100=174 - 202 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on (001) and well-developed on (010)
Density:
6.58 g/cm3 (Calculated)

Optical Data of PizgrischiteHide

Anisotropism:
Weak
Reflectivity:
WavelengthR1R2imR1imR2
400nm39.9%40.8%24.80%25.80%
420nm40.2%41.2%25.00%26.00%
440nm40.4%41.5%25.05%26.20%
460nm40.6%42.0%25.20%26.50%
470nm40.7%42.1%25.30%26.75%
480nm40.8%42.4%25.35%27.00%
500nm41.0%42.7%25.40%27.15%
520nm41.1%42.9%25.40%27.25%
540nm41.1%43.0%25.45%27.40%
546nm41.2%43.1%25.40%27.40%
560nm41.1%43.1%25.40%27.45%
580nm41.1%43.1%25.30%27.45%
589nm41.2%43.3%25.40%27.50%
600nm41.1%43.2%25.30%27.55%
620nm41.1%43.4%25.25%27.55%
640nm40.9%43.4%25.05%27.60%
650nm40.7%43.3%25.00%27.55%
660nm40.5%43.2%24.85%27.50%
680nm40.3%43.1%24.70%27.30%
700nm40.1%43.0%24.60%27.15%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 43.4%.
R1 shown in black, R2 shown in red, imR1 shown in green, imR2 shown in blue
Colour in reflected light:
Dark brown (in oil with ND=1.515)
Internal Reflections:
None observed

Chemical Properties of PizgrischiteHide

Formula:
(Cu,Fe)Cu14PbBi17S35
IMA Formula:
(Cu,Fe)Cu14PbBi17S34

Crystallography of PizgrischiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 35.054(2) Å, b = 3.91123(1) Å, c = 43.192(2) Å
β = 96.713(4)°
Ratio:
a:b:c = 8.962 : 1 : 11.043
Unit Cell V:
5,881.21 ų (Calculated from Unit Cell)
Z:
4
Twinning:
Abundant polysynthetic twinning on (010).

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006155PizgrischiteMeisser N, Schenk K, Berlepsch P, Brugger J, Bonin M, Criddle A J, Thelin P, Bussy F (2007) Pizgrischite, (Cu,Fe)Cu14PbBi17S35, a new sulfosalt from the Swiss Alps: Description, crystal structure and occurrence The Canadian Mineralogist 45 1229-12452007Piz Grisch Mountain, Val Ferrera, Graubunden, Switzerland0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.36 Å(40)
4.08 Å(50)
3.904 Å(37)
3.585 Å(34)
3.120 Å(40)
3.104 Å(68)
2.759 Å(53)
2.752 Å(44)
1.956 Å(100)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of PizgrischiteHide

General Appearance of Type Material:
Thin lead-grey blades up to 1 cm, embedded in quartz.
Place of Conservation of Type Material:
Two holotype specimens: Museum of Geology, Lausanne (MGL), Switzerland. Sample MGL 58622 (isolated crystals) and sample MGL 53660 (polished
section).
Cotype: British Museum of Natural History, London, England.
Geological Setting of Type Material:
Quartz vein embedded in gneisses.
Associated Minerals at Type Locality:
Reference:
Meisser, N., Schenk, K., Berlepsch, P., Brugger, J., Bonin, M., Criddle, A. J., Thelin, P., Bussy, F. (2007) Pizgrischite, (Cu,Fe)Cu14PbBi17S35, a new sulfosalt from the Swiss Alps: description, crystal structure and occurrence. Canadian Mineralogist: 45: 1229-1245.

Synonyms of PizgrischiteHide

Related Minerals - Strunz-mindat GroupingHide

2.JA.FerdowsiiteAg8(Sb5As3)S16Mon. 2/m : P21/b
2.JA.SangenaroiteAg8(Sb8-xAsx)SΣ16 Mon. 2/m
2.JA.LuboržákiteMn2AsSbS5Mon. 2/m : B2/m
2.JA.05eBenjaminiteAg3Bi7S12Mon. 2/m : B2/m
2.JA.05gBorodaeviteAg5(Bi,Pb,Fe)8(Sb,Bi)2S17Mon.
2.JA.05aCupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 Mon. 2/m : B2/m
2.JA.05iLivingstoniteHgSb4S6(S2)Mon. 2/m : B2/b
2.JA.05dMakovickyiteCu1.12Ag0.81Pb0.27Bi5.35S9Mon. 2/m
2.JA.05fMummeiteCu0.58Ag3.11Pb1.10Bi6.65S13Mon.
2.JA.05aPavoniteAgBi3S5Mon. 2/m : B2/m
2.JA.05bGrumipluciteHgBi2S4Mon. 2/m : B2/m
2.JA.05hMozgovaitePbBi4S7Orth. mmm (2/m 2/m 2/m)
2.JA.05dCupromakovickyiteCu4AgPb2Bi9S18Mon. 2/m : B2/m
2.JA.05cKudriavite(Cd,Pb)Bi2S4Mon. 2/m : B2/m
2.JA.05aCupromakopavoniteAg3Cu8Pb4Bi19S38Mon. 2/m : B2/m
2.JA.05DantopaiteAg5Bi13S22Mon. 2/m : B2/m
2.JA.10aCuprobismutiteCu8AgBi13S24Mon. 2/m : B2/m
2.JA.10cHodrušiteCu8Bi12S22Mon. 2/m
2.JA.10ePadĕraiteCu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22Mon. 2/m : P21/m
2.JA.10bKupčíkiteCu3.4Fe0.6Bi5S10Mon. 2/m : B2/m
2.JA.15SchapbachiteAg0.4Pb0.2Bi0.4SIso. m3m (4/m 3 2/m) : Fm3m
2.JA.15CuboargyriteAgSbS2Iso. m3m (4/m 3 2/m)
2.JA.20BohdanowicziteAgBiSe2Trig. 3m (3 2/m) : P3m1
2.JA.20MatilditeAgBiS2Trig. 3 2 : P31 2 1
2.JA.20VolynskiteAgBiTe2Trig. 3m (3 2/m) : P3m1

Other InformationHide

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 PizgrischiteHide

References for PizgrischiteHide

Reference List:

Localities for PizgrischiteHide

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 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.
Switzerland (TL)
 
  • Grisons
    • Viamala Region
      • Ferrera
        • Ausserferrera
 
Mineral and/or Locality  
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