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Chrisstanleyite

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Hope's Nose, Torquay, South Devon, Devon, England, UK
© 2004 M. Kampf

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Formula:
Ag
 
2
Pd
 
3
Se
 
4
System:MonoclinicColour:Silvery grey
Hardness:5
Name:
For Dr. Chris J. Stanley (1954-) from the Natural History Museum (London)


Silver analogue of jaguéite.

Classification of Chrisstanleyite

IMA status:Approved
Strunz 8th edition ID:2/A.06-30
Nickel-Strunz 10th (pending) edition ID:2.BC.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
C : With Rh, Pd, Pt, etc.
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Type Occurrence of Chrisstanleyite

Type Locality:Hope's Nose, Torquay, South Devon, Devon, England, UK
Place of Conservation of Type Material:Natural History Museum, London
Geological Setting of type material:In gold bearing veins

Physical Properties of Chrisstanleyite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Silvery grey
Streak:Black
Hardness (Mohs):5
Hardness (Vickers):VHN100=395 kg/mm2
Tenacity:Brittle
Density (calculated):8.30 g/cm3

Crystallography of Chrisstanleyite

Crystal System:Monoclinic
Cell Parameters:a = 6.350(6) Å, b = 10.387(4) Å, c = 5.683(3) Å
β = 114.90(5)°
Ratio:a:b:c = 0.611 : 1 : 0.547
Unit Cell Volume:V 339.99 ų (Calculated from Unit Cell)
Z:2
Morphology:Anhedral crystals to several hundred microns.
Twinning:Fine polysynthetic and parquetlike
Structure
  Reference
Topa D Makovicky E Balic-Zunic T (2006) The crystal structures of jagueite, Cu2Pd3Se4, and chrisstanleyite, Ag2Pd3Se4 Locality: El Chire, La Rioja, Argentina. The Canadian Mineralogist 44:497-505.

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More Crystal Structures
Click here to view more crystal structures at the American Mineralogist Crystal Structure Database

Optical Data of Chrisstanleyite

Type:Anisotropic
Anisotropism:Moderate; rose-brown, gray-green, pale bluish gray, dark steel-blue
Bireflectance:Weak to moderate
Pleochroism:Weak
Comments:Pale buff to slightly gray-green buff

Chemical Properties of Chrisstanleyite

Formula:
Ag
 
2
Pd
 
3
Se
 
4
Essential elements:Ag, Pd, Se
All elements listed in formula:Ag, Pd, Se

Relationship of Chrisstanleyite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.BC.UM2004-45-Se:AgHgPd
(Ag,Cu)
 
6
Hg
 
2
Pd
 
2
Se
 
3
2.BC.05Palladseite
Pd
 
17
Se
 
15
2.BC.05Miassite
Rh
 
17
S
 
15
2.BC.05UM2000-47-S:CuFePdPt
(Cu,Fe,Pd,Pt,Rh)
 
9
S
 
8
2.BC.10Oosterboschite
(Pd,Cu)
 
7
Se
 
5
2.BC.15Jaguéite
Cu
 
2
Pd
 
3
Se
 
4
2.BC.20Keithconnite
Pd
 
3-x
Te (x = 0.14 - 0.43)
2.BC.25Vasilite
(Pd,Cu)
 
16
(S,Te)
 
7
2.BC.30Telluropalladinite
Pd
 
9
Te
 
4
2.BC.35Luberoite
Pt
 
5
Se
 
4
2.BC.40Oulankaite
(Pd,Pt)
 
5
(Cu,Fe)
 
4
SnTe
 
2
S
 
2
2.BC.45Telargpalite
(Pd,Ag)
 
3
(Te,Bi)
2.BC.50Temagamite
Pd
 
3
HgTe
 
3
2.BC.55Sopcheite
Ag
 
4
Pd
 
3
Te
 
4
2.BC.60Laflammeite
Pd
 
3
Pb
 
2
S
 
2
2.BC.65Tischendorfite
Pd
 
8
Hg
 
3
Se
 
9

Other Names for Chrisstanleyite

Synonyms:
IMA1996-044
Other Languages:
German:Chrisstanleyit
Spanish:Chrisstanleyita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Chrisstanleyite

Reference List:Mineralogical Magazine: 62: 257-264.

Internet Links for Chrisstanleyite

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    Localities for Chrisstanleyite

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • La Rioja
      • Jagué
    		Can. Min. Vol. 42, 1745-1755 (2004).
    Australia
     
    • Western Australia
      • Pilbara Region
    		CanMin 40:419-433.(2002)
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
    		W. H. Paar, D. Topa, E. Makovický, F. J. Culetto: "Milotaite, PdSbSe, a new palladium mineral, from Předbořice, Czech Republic", The Canadian Mineralogist 43, 689-694 (2005)
    Germany
     
    • Saxony-Anhalt
      • Harz Mts
        • Tilkerode (Abberode)
    		Lapis 2002(11), 42-43
    UK
     
    • England
      • Devon
        • South Devon
          • Torquay
    		Min.Mag.(1998) 62, 257-264
    Mineral and/or Locality
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