Vincentite Mineral Data

Vincentite Mineral Data +

General Vincentite Information

Chemical Formula:

(Pd,Pt)3(As,Sb,Te)

Composition:

Molecular Weight = 466.99 gm

Antimony 7.82 % Sb

Tellurium 8.20 % Te

Arsenic 8.02 % As

Palladium 59.25 % Pd

Platinum 16.71 % Pt

______

100.00 %

Empirical Formula:

Pd_2.6Pt_0.4As_0.5Sb_0.3Te_0.3

IMA Status:

Approved IMA 1974

Locality:

Riam Kanan, R., Borneo Link to MinDat.org Location Data.

Name Origin:

Named for Ewart A. Vincent (1919-), professor of mineralogy, Oxford University.

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Vincentite Crystallography

Axial Ratios:

a:b:c =1.7768:1:1.2736

Cell Dimensions:

a = 11.226, b = 6.318, c = 8.047, Z = 8; beta = 100.95° V = 560.35 Den(Calc)= 11.07

Crystal System:

MonoclinicSpace Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.8(1)(602), 1.775(0.9)(404), 1.745(0.8)(331),1.758(0.8)(423), 1.838(0.6)(600),

Physical Properties of Vincentite

Color:

Gray.

Density:

6.816

Diaphaniety:

Opaque

Hardness:

5 - Apatite

Luster:

Metallic

Optical Properties of Vincentite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Vincentite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	38.80	43.10
546 nm	45.40	51.30
589 nm	48.00	54.20
650 nm	50.80	55.90

**Calculated Relative Intensity Colors of Vincentite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	230%
R₁
R₂

Calculated Properties of Vincentite

Electron Density:

r_electron=9.40 gm/cc
note: r_Vincentite=11.1 gm/cc.

Fermion Index

Fermion Index = 0.19533
Boson Index = 0.80467

Photoelectric:

PE_Vincentite= 463.85 barns/electron
U=PE_Vincentite x r_electron=4,358.60 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Vincentite is Not Radioactive

Vincentite Classification

Dana Class:

2.2.5.1 (2)Sulfides - Including Selenides and Tellurides

(2.2)where Am Bn Xp, with (m+n):p=3:1

(2.2.5)Dana Group

2.2.5.1 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono

Strunz Class:

II/A.05-20 II - Sulfides and sulphosalts

II/A - Alloys and alloylike compounds, with metals of the Platinum series, (Palladium)

II/A.05 - Atheneite - Genkinite series

II/A.05-10 Atheneite (Pd,Hg)3As P 6/mmm 6/m 2/m 2/m

II/A.05-20 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono

II/A.05-30 Stillwaterite Pd8As3 P 3 3

II/A.05-40 Arsenopalladinite Pd8(As,Sb)3 P1 1

II/A.05-50 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m

II/A.05-60 Mertieite-I Pd11(Sb,As)4 Unk Hex

II/A.05-70 Mertieite-II Pd8(Sb,As)3 R 3c 3m

II/A.05-80 Stibiopalladinite Pd5Sb2 P 6₃mc 6mm

II/A.05-90 Palladoarsenide Pd2As P 2/m 2/m

II/A.05-100 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 2₁cn Ortho

II/A.05-102 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m

II/A.05-105 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho

II/A.05-110 Majakite PdNiAs Unk Hex

II/A.05-112 Menshikovite! Pd3Ni2As3 P 6₃/m,P 6₃, or P 6₃22 Hex

II/A.05-115 Polkanovite! Rh12As7 P 6₃m 6/m

II/A.05-120 Genkinite (Pt,Pd)4Sb3 P 4₁2₁2 4 2 2

Other Vincentite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, Vol 88, p 255) OPTIC PROP.(AmMin, Vol 88, p 255)

See Also:

Links to other databases for Vincentite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Vincentite

(Pd,Pt)3(As,Sb,Te)
Dana No: 2.2.5.1 Strunz No: II/A.05-20
Locality:

Notes: