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Jagüéite

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Formula:
Cu
 
2
Pd
 
3
Se
 
4
System:MonoclinicColour:Creamy yellowish
Hardness:5
Name:Named after the village of Jagüé, which is the closest settlement to El Chire, the mine where the mineral was discovered.


Copper analogue of chrisstanleyite.

Occurs in a telethermal selenide vein-type deposit.

Originally called "jaguéite"; renamed in 2010 (IMA 10-D).

Classification of Jagüéite

IMA status:Renamed approved 2010
Strunz 8th edition ID:2/A.06-28
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 Jagüéite

Type Locality:El Chire prospect, Los Llantenes district, Vinchina Department, La Rioja, Argentina
General Appearance of Type Material:anhedral grains that lack a distinct morphology. Aggregates of intergrown jaguéite and chrisstanleyite measure up to 100 × 20 µm; single grains, however, do not exceed 60 µm
Geological Setting of type material:A telethermal selenide vein-type deposit
Associated Minerals at type locality:
UmangiteTiemanniteNaumanniteKlockmanniteGold
ClausthaliteChrisstanleyiteBerzelianiteAguilariteAguilarite

Physical Properties of Jagüéite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Creamy yellowish
Streak:Black
Hardness (Mohs):5
Hardness (Vickers):VHN25=464 - 772 kg/mm2
Tenacity:Brittle
Cleavage:None Observed
Fracture:Irregular/Uneven
Density (calculated):8.01 g/cm3

Crystallography of Jagüéite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 5.672Å, b = 9.91Å, c = 6.264Å
β = 115.4°
Ratio:a:b:c = 0.572 : 1 : 0.632
Unit Cell Volume:V 318.1 ų
Z:2
Twinning:Prominent spindle-shaped (almost identical to those in chrisstanleyite)
X-Ray Powder Diffraction:
d-spacingIntensity
2.776 (22)
2.759 (23)
2.676 (100)
2.630 (64)
2.508 (31)
2.269 (27)

Optical Data of Jagüéite

Type:Anisotropic
Anisotropism:moderate: brownish - bluish - greenish rotation tints
Bireflectance:Weak to moderate
Reflectivity:
460 nmR1=40.4%R2=48.4%
540 nmR1=44.2%R2=50.7%
580 nmR1=44.7%R2=50.6%
640 nmR1=45.1%R2=50.6%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 50.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:buff to grey-green
Internal Reflections:not observed
Pleochroism:Weak
Comments:Light buff to creamy buff

Chemical Properties of Jagüéite

Formula:
Cu
 
2
Pd
 
3
Se
 
4
Essential elements:Cu, Pd, Se
All elements listed in formula:Cu, Pd, Se
Analytical Data:Forms a limited solid solution series with chrisstanleyite.

Relationship of Jagüéite 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.15Chrisstanleyite
Ag
 
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 Jagüéite

Synonyms:
IMA2002-060Jaguéite
Other Languages:
German:Jaguéit

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 Jagüéite

Reference List:

- +
Paar, W.H., Werner, H., Topa, D., Makovicky, E., Sureda, R.J., De Brodtkorb, M.K., Nickel, E.H., and Putz, H. (2004) Jagueite, Cu2Pd3Se4, a new mineral species from El Chire, La Rioja, Argentina. Canadian Mineralogist: 42(6): 1745-1755.

Internet Links for Jagüéite

Search Engines:
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  • Localities for Jagüéite

    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
      • Vinchina Department
        • Los Llantenes district
    Canadian Mineralogist (2004): 42(6): 1745-1755.
    Australia
     
    • Western Australia
      • East Pilbara Shire
        • Rudall River District
    The Canadian Mineralogist, Vol. 42, pp. 1745-1755 (2004)
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