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Insizwaite

A valid IMA mineral species
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00493100017271923904149.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
03832290017271923941044.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
04354650017271924014625.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
00493100017271923904149.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
03832290017271923941044.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
04354650017271924014625.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
00493100017271923904149.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
03832290017271923941044.jpg
Insizwaite, etc.

Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia
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About InsizwaiteHide

06433390017271924103350.jpg
Waterfall Gorge, Insizwa

Insizwa, Umzimvubu Local Municipality, Alfred Nzo District Municipality, Eastern Cape, South Africa
Formula:
PtBi2
Minor Sb may replace Bi.
Lustre:
Metallic
Hardness:
5 - 5½
Specific Gravity:
12.8 (Calculated)
Crystal System:
Isometric
Member of:
Pyrite Group
Name:
Named for the type locality, the Insizwa deposit, Waterfall Gorge, South Africa.

Pronounced ǐnsizwa-ait.
Compare, e.g., UM1990-07-Bi:Pt, UM1990-08-Bi:Pt, and UM1990-06-Bi:PbPt.


Unique IdentifiersHide

Mindat ID:
2035
Long-form identifier:
mindat:1:1:2035:6

IMA Classification of InsizwaiteHide

Classification of InsizwaiteHide

Strunz-mindat (2026):
2.EB.05a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
Dana 8th ed.:
2.12.1.15

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
Hey's CIM Ref.:
3.12.56

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
12 : Sulphides etc. of the platinum metals

Mineral SymbolsHide

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

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

Physical Properties of InsizwaiteHide

Lustre:
Metallic
Transparency:
Opaque
Hardness:
5 - 5½ on Mohs scale
Hardness:
VHN25=488 - 540 kg/mm2 - Vickers
Density:
12.8 g/cm3 (Calculated)

Optical Data of InsizwaiteHide

Bireflectance:
None
Reflectivity:
WavelengthR1 (%)
400nm55.7%
420nm56.4%
440nm57.2%
460nm57.8%
480nm58.4%
500nm58.8%
520nm59.2%
540nm59.5%
560nm59.8%
580nm60.1%
600nm60.3%
620nm60.4%
640nm60.4%
660nm60.3%
680nm60.3%
700nm60.3%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 60.4%.
Colour in reflected light:
white

Chemistry of InsizwaiteHide

Mindat Formula:
PtBi2

Minor Sb may replace Bi.
Element Weights:
Element% weight
Bi68.178 %
Pt31.822 %

Calculated from ideal end-member formula.
Elements listed:
Bi, Pt - search for minerals with similar chemistry
Common Impurities:
Pd,Ni,Sn,Te

Crystallography of InsizwaiteHide

Crystal System:
Isometric
Class (H-M):
m3(2/m3) - Diploidal
Space Group:
Pa3
Setting:
Pa3
Cell Parameters:
a = 6.691 Å
Unit Cell V:
299.55 ų (Calculated from Unit Cell)
Z:
4

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0015804InsizwaiteBrese N E, von Schnering H G (1994) Bonding trends in pyrites and a reinvestigation of the structures of PdAs2, PdSb2, PtSb2 and PtBi2 Zeitschrift fur Anorganische und Allgemeine Chemie 620 393-4041994synthetic0293
0017788InsizwaiteFuruseth S, Selte K, Kjekshus A (1965) Redetermined crystal structures of PdAs2, PdSb2, PtP2, PtAs2, PtSb2, alpha-PtBi2, and AuSb2 Acta Chemica Scandinavica 19 735-7411965synthetic0293
0015828InsizwaiteWallbaum H J (1943) Die kristallstrukturen von Bi2Pt und Sn2Pt Zeitschrift fur Metallkunde 35 200-2011943synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.96 Å(80)
2.70 Å(80)
1.998 Å(100)
1.774 Å(70)
1.277 Å(60)
1.171 Å(60)
0.862 Å(70)

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])
Stage 4b: Highly evolved igneous rocks>3.0
37 : Layered igneous intrusions and related PGE minerals

Type Occurrence of InsizwaiteHide

Type Locality:
ⓘ Waterfall gorge, Insizwa, Umzimvubu Local Municipality, Alfred Nzo District Municipality, Eastern Cape, South Africa
General Appearance of Type Material:
small rounded grains, varying in area up to 70 x 220 μm.
Place of Conservation of Type Material:
Geological Survey of Canada, Ottawa, 10400.
Canadian Museum of Nature, Ottawa, Canada.
Associated Minerals at Type Locality:
ChalcopyriteNiggliiteParkeritePentlanditePyrrhotite
Reference:
Cabri, L. J., Harris, D. C. (1972) The new mineral insizwaite (PtBi2) and new data on niggliite (PtSn) Mineralogical Magazine, 38 (299) 794-800 doi:10.1180/minmag.1972.038.299.03

Synonyms of InsizwaiteHide

Other Language Names for InsizwaiteHide

Relationship of Insizwaite to other SpeciesHide

Member of:
Pyrite Group
Other Members of Pyrite Group:
AurostibiteAuSb2Iso. m3(2/m3) : Pa3
CattieriteCoS2Iso. m3(2/m3) : Pa3
DzharkeniteFeSe2Iso. m3(2/m3) : Pa3
ErlichmaniteOsS2Iso. m3(2/m3) : Pa3
FukuchiliteCu3FeS8Iso. m3(2/m3) : Pa3
GaotaiiteIr3Te8Iso. m3(2/m3) : Pa3
GeversitePtSb2Iso. m3(2/m3) : Pa3
HaueriteMnS2Iso. m3(2/m3) : Pa3
KruťaiteCuSe2Iso. m3(2/m3) : Pa3
LauriteRuS2Iso. m3(2/m3) : Pa3
Penroseite(Ni,Co,Cu)Se2Iso. m3(2/m3) : Pa3
PyriteFeS2Iso. m3(2/m3) : Pa3
SperrylitePtAs2Iso. m3(2/m3) : Pa3
TrogtaliteCoSe2Iso. m3(2/m3) : Pa3
VaesiteNiS2Iso. m3(2/m3) : Pa3
Villamanínite(Cu,Ni,Co,Fe)S2Tric.

Common AssociatesHide

Associations Based on Photo Data:
11 photos of Insizwaite associated with SobolevskitePdBi
9 photos of Insizwaite associated with AltaitePbTe
6 photos of Insizwaite associated with GalenaPbS
6 photos of Insizwaite associated with UrvantsevitePd(Bi,Pb)2
6 photos of Insizwaite associated with Pentlandite(NixFey)Σ9S8
5 photos of Insizwaite associated with MooihoekiteCu9Fe9S16
5 photos of Insizwaite associated with Native SilverAg
3 photos of Insizwaite associated with CubaniteCuFe2S3
3 photos of Insizwaite associated with Frooditeα-PdBi2
2 photos of Insizwaite associated with MagnetiteFe2+Fe3+2O4

Related Minerals - Strunz-mindat GroupingHide

2.EB.SelenolauriteRuSe2Iso. m3(2/m3) : Pa3
2.EB.AndrieslombaarditeRhSbSIso. 23 : P213
2.EB.Iridarsenite(Ir,Ru)As2Mon. 2/m : P21/b
2.EB.Kanatzidisite(SbBiS3)2Te2Mon. 2/m : P21/m
2.EB.05aVaesiteNiS2Iso. m3(2/m3) : Pa3
2.EB.05aHaueriteMnS2Iso. m3(2/m3) : Pa3
2.EB.05aLauriteRuS2Iso. m3(2/m3) : Pa3
2.EB.05aGaotaiiteIr3Te8Iso. m3(2/m3) : Pa3
2.EB.05aPenroseite(Ni,Co,Cu)Se2Iso. m3(2/m3) : Pa3
2.EB.05aFukuchiliteCu3FeS8Iso. m3(2/m3) : Pa3
2.EB.05aVillamanínite(Cu,Ni,Co,Fe)S2Tric.
2.EB.05aErlichmaniteOsS2Iso. m3(2/m3) : Pa3
2.EB.05aSperrylitePtAs2Iso. m3(2/m3) : Pa3
2.EB.05aGeversitePtSb2Iso. m3(2/m3) : Pa3
2.EB.05aCattieriteCoS2Iso. m3(2/m3) : Pa3
2.EB.05aAurostibiteAuSb2Iso. m3(2/m3) : Pa3
2.EB.05aTrogtaliteCoSe2Iso. m3(2/m3) : Pa3
2.EB.05a v'Cayeuxite'
2.EB.05aKruťaiteCuSe2Iso. m3(2/m3) : Pa3
2.EB.05aPyriteFeS2Iso. m3(2/m3) : Pa3
2.EB.05bBambollaiteCu(Se,Te)2Tet.
2.EB.05aDzharkeniteFeSe2Iso. m3(2/m3) : Pa3
2.EB.10aMarcasiteFeS2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10eParacostibiteCoSbSOrth. mmm(2/m2/m2/m) : Pbca
2.EB.10fOeniteCoSbAsOrth.
2.EB.10ePararammelsbergiteNiAs2Orth. mmm(2/m2/m2/m) : Pbca
2.EB.10aMattagamiteCoTe2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10aFrohbergiteFeTe2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10dCostibiteCoSbSOrth. mm2 : Pmn21
2.EB.10bAlloclasiteCo1-xFexAsSMon. 2 : P21
2.EB.10cGlaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
2.EB.10aPetříčekiteCuSe2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10aKulleruditeNiSe2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.10aFerroseliteFeSe2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15bSeinäjokiteFeSb2Orth.
2.EB.15aRammelsbergiteNiAs2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15aClinosaffloriteCoAs2Mon. 2/m : P21/m
2.EB.15cPaxiteCuAs2Mon. 2/m : P21/b
2.EB.15aNisbiteNiSb2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15aLöllingiteFeAs2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15aSafflorite(Co,Ni,Fe)As2Orth. mmm(2/m2/m2/m) : Pnnm
2.EB.15aOmeiiteOsAs2Orth.
2.EB.15aAnduoiteRuAs2Orth.
2.EB.20ArsenopyriteFeAsSMon. 2/m : P21/b
2.EB.20Ruarsite(Ru,Os)AsSMon.
2.EB.20Osarsite(Os,Ru)AsSMon.
2.EB.20GudmunditeFeSbSMon. 2/m : P21/b
2.EB.25MayingiteIrBiTeIso. m3(2/m3) : Pa3
2.EB.25MaslovitePtBiTeIso. 23 : P213
2.EB.25ParagersdorffiteNi(As,S)2Iso. m3(2/m3) : Pa3
2.EB.25OrthogersdorffiteNiAsSOrth. mm2 : Pca21
2.EB.25SulfopadmaitePdBiSIso. 23 : P213
2.EB.25JolliffeiteNiAsSeIso. m3(2/m3) : Pa3
2.EB.25CobaltiteCoAsSOrth. mm2 : Pca21
2.EB.25GuixiangiteNiBiSIso. 23 : P213
2.EB.25TestibiopalladitePdSbTeIso.
2.EB.25 va'Antimony-bearing Gersdorffite'Ni(As,Sb)S
2.EB.25KalungaitePdAsSeIso. m3(2/m3) : Pa3
2.EB.25Hollingworthite(Rh,Pt,Pd)AsSIso. m3(2/m3) : Pa3
2.EB.25MicheneritePdBiTeIso. 23 : P213
2.EB.25GersdorffiteNiAsSIso. 23 : P213
2.EB.25MilotaitePdSbSeIso. 23 : P213
2.EB.25TolovkiteIrSbSIso.
2.EB.25'Platarsite'Pt(As,S)2Iso. m3(2/m3) : Pa3
2.EB.25WillyamiteCoSbS
2.EB.25ChangchengiteIrBiSIso. 23 : P213
2.EB.25KvačekiteNiSbSeIso. 23 : P213
2.EB.25KrutoviteNiAs2Iso. 23 : P213
2.EB.25PadmaitePdBiSeIso. 432
2.EB.25UllmanniteNiSbSIso. 23 : P213
2.EB.25Irarsite(Ir,Ru,Rh,Pt)AsSIso. m3(2/m3) : Pa3
2.EB.30UrvantsevitePd(Bi,Pb)2Tet. 4/mmm(4/m2/m2/m) : I4/mmm
2.EB.35RheniiteReS2Tric. 1 : P1

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 InsizwaiteHide

References for InsizwaiteHide

Localities for InsizwaiteHide

Showing 31 localities.

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.
Hide all sections | Show all sections

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.
Canada
 
  • Ontario
    • Greater Sudbury
      • Blezard Township
Ames et al. (2003)
      • Creighton-Davies Township
Ford et al. (2011)
      • Levack Township
Vale SA
Ames et al. (2003) +1 other reference
ontariominerals.com +1 other reference
    • Sudbury District
157-158. +1 other reference
    • Thunder Bay District
      • Seagull Lake Area
        • Seagull Lake complex
Wilson et al. (2013)
Guinea
 
  • Kindia Region
Augé et al. (2018)
Poland
 
  • Lower Silesian Voivodeship
    • Lubin County
Kucha (2021)
    • Polkowice County
      • Gmina Polkowice
Kucha (2021)
Russia
 
  • Amur Oblast
    • Tyndinsky district
Kepezhinskas et al. (2022)
  • Buryatia
    • Severo-Baykalsky District
      • Dovyren Highlands
Spiridonov et al. (2019) +1 other reference
Spiridonov et al. (2019, April)
Spiridonov et al. (2018)
Kislov +2 other references
  • Khabarovsk Krai
    • Ayano-Maysky district
Shcheka et al. (2004) +1 other reference
  • Krasnoyarsk Krai
    • Taymyrskiy Autonomous Okrug
      • Taimyr Peninsula
Spiridonov et al. (2008) +1 other reference
Sluzhenikin et al. (2015)
          • Talnakh Cu-Ni Deposit
Vymazalová et al. (2017)
Dr. N Rudashevsky
Günter Grundmann analysis
  • Murmansk Oblast
    • Kovdorsky District
Sorokhtina et al. (2021)
  • Republic of Karelia
    • Medvezhyegorsky District
      • Zaonezhie peninsula
American Mineralogist +3 other references
South Africa (TL)
 
  • Eastern Cape
    • Alfred Nzo District Municipality
      • Umzimvubu Local Municipality
        • Insizwa
Cabri et al. (1972)
  • Limpopo
    • Capricorn District Municipality
      • Blouberg Local Municipality
        • Waterberg project
McCreesh et al. (2018)
    • Sekhukhune District Municipality
      • Fetakgomo Tubatse Local Municipality
Melcher et al. (2007)
    • Waterberg District Municipality
      • Mogalakwena Local Municipality
        • Mokopane
Ndhlovu (2017)
          • Mogalakwena Mine
Cairncross et al. (1995) +1 other reference
Holwell et al. (2006) +1 other reference
Hutchinson et al. (2005)
USA
 
  • Alaska
    • Bethel Census Area
      • Goodnews Bay
        • Salmon River - Red Mountain District
Anthony et al. (1990)
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