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Crerarite

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David A. Crerar
Formula:
Pt2-x(Bi,Pb)11(S,Se)11
Colour:
light grey
Lustre:
Metallic
Hardness:
3 - 3½
Crystal System:
Triclinic
Name:
Named in honor of David Alexander Crerar (23 July 1945 - 6 September 1994) professor of geochemistry at Princeton University, New Jersey, USA. He was an expert in environmental geochemistry, ore deposits, and water-rock interactions.
This page provides mineralogical data about Crerarite.


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Classification of CrerariteHide

IMA status:
Approved
Approval Year:
1994
Strunz 8th ed.:
2/C.15-70
Nickel-Strunz 10th (pending) ed.:
2.LB.45

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
B : With essential Pb
Dana 8th ed.:
2.8.1.8

2 : SULFIDES
8 : AmXp, with m:p = 1:1

Physical Properties of CrerariteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
light grey
Hardness:
3 - 3½ on Mohs scale
Cleavage:
Poor/Indistinct

Optical Data of CrerariteHide

Type:
Isotropic

Chemical Properties of CrerariteHide

Formula:
Pt2-x(Bi,Pb)11(S,Se)11
IMA Formula:
(Pt,Pb)Bi3(S,Se)4-x (x = 0.4-0-8)
Elements listed:
Bi, Pb, Pt, S, Se - search for minerals with similar chemistry
Common Impurities:
Pd,Fe,Cu,Te

Crystallography of CrerariteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.3521(7) Å, b = 9.3898(6) Å, c = 14.517(1) Å
α = 105.647(1)°, β = 96.780(1)°, γ = 108.390(1)°
Ratio:
a:b:c = 0.996 : 1 : 1.546
Unit Cell V:
1,135.72 ų (Calculated from Unit Cell)

Type Occurrence of CrerariteHide

Synonyms of CrerariteHide

Other Language Names for CrerariteHide

German:Crerarit
Spanish:Crerarita

Related Minerals - Nickel-Strunz GroupingHide

2.LB.05MiharaiteCu4FePbBiS6Orth.
2.LB.30ArdaitePb19Sb13S35Cl7Mon.
2.LB.30LaunayiteCuPb10(Sb,As)12S20Mon.
2.LB.30MadocitePb19(Sb,As)16S43Orth.
2.LB.30PlayfairitePb16(Sb,As)19S44ClMon.
2.LB.30SorbyiteCuPb9(Sb,As)11S26Mon. 2/m : B2/m
2.LB.30SterryiteCu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56Mon. 2/m
2.LB.35Larosite(Cu,Ag)21PbBiS13Orth.
2.LB.40PetroviciteCu3HgPbBiSe5Orth.
2.LB.40MazzettiiteAg3HgPbSbTe5Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide

2.8.1.1GalenaPbSIso. m3m (4/m 3 2/m) : Fm3m
2.8.1.2ClausthalitePbSeIso. m3m (4/m 3 2/m) : Fm3m
2.8.1.3AltaitePbTeIso. m3m (4/m 3 2/m) : Fm3m
2.8.1.4AlabanditeMnSIso. m3m (4/m 3 2/m) : Fm3m
2.8.1.7BorovskitePd3SbTe4Iso.

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.

References for CrerariteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
COOK, N.J., WOOD, S.A., GEBERT, W., BERNHARDT, H.J. & MEDENBACH, O. (1994): Crerarite, a new Pt-Bi-Pb-S mineral from the Cu-Bi-Ni-PGE deposit at Lac Sheen, Abitibi-Témiscamingue, Québec, Canada. Neues Jahrbuch für Mineralogie, Monatshefte, 567-575.
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Crerarite a Pt-Bi-S mineral: A new occurrence and re-investigation of its chemical formula and crystal structure.

Internet Links for CrerariteHide

Localities for CrerariteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Ontario
    • Sudbury District
      • Levack Township
33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Crerarite a Pt-Bi-S mineral: A new occurrence and re-investigation of its chemical formula and crystal structure
      • Wisner Township
Economic Geology 103 (2008) 1005-1028.; Ames, D. E., McClenaghan, M. B., Averill, S., & Milkereit, B. (2007). Footwall-hosted Cu-PGE (Au, Ag), Sudbury Canada: towards a new exploration vector. Exploration 07, Exploration in the New Millennium, 1013-1017.
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Belleterre
COOK, N.J., WOOD, S.A., GEBERT, W., BERNHARDT, H.J. & MEDENBACH, O. (1994): Crerarite, a new Pt-Bi-Pb-S mineral from the Cu-Ni-PGE deposit at Lac Sheen, Abitibi-Témiscamingue, Québec, Canada. Neues Jahrbuch für Mineralogie, Monatshefte, 567-575.
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