Rustenburgite Mineral Data

Rustenburgite Mineral Data +

General Rustenburgite Information

Chemical Formula:

(Pt,Pd)3Sn

Composition:

Molecular Weight = 637.46 gm

Tin 18.62 % Sn

Palladium 12.52 % Pd

Platinum 68.86 % Pt

______

100.00 %

Empirical Formula:

Pt_2.25Pd_0.75Sn

Environment:

As very sparse grains in concentrates.

IMA Status:

Approved IMA 1975

Locality:

Atok and Rustenburg mines, Merensky Reef, Pretoria, Transvaal, South Africa. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 40336

PDF 29-968

Rustenburgite Image

Images:

Click Here for Larger Rustenburgite Image

Rustenburgite Tatyanaite

Comments: Back-scattered electron images showing inclusions of rustenburgite intergrown with taimyrite-tatyanaite aggregates. (AmMin, v 42, p 608).
Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia. Scale: See Image.
© American Mineralogist

Rustenburgite Crystallography

Cell Dimensions:

a = 3.991, Z = 1; V = 63.57 Den(Calc)= 16.65

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

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

By Intensity(I/I_o): 1.202(1), 2.295(1), 1.408(0.9),

Crystal Structure:

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Mihalik P , Hiemstra S A , de Villiers J P R , The Canadian Mineralogist , 13 (1975) p.146-150, Rustenburgite and atokite, two new platinum-group minerals from the, Merensky Reef, Bushveld igneous complex, Locality: the Rustenburg and Atok Platinum Mines in the Bushveld Igneous complex, South Africa

Physical Properties of Rustenburgite

Color:

Tin white.

Diaphaniety:

Opaque

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

5 - Apatite

Luster:

Metallic

Optical Properties of Rustenburgite

RL Anisotrophism:

Slight due to strain.

RL Color:

Light cream.

RL Pleochroism:

None under the microscope but slight through a photometer.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Rustenburgite in Air**
λ	R	∑ R(λ)
480 nm	56.20
546 nm	59.80
589 nm	60.40
656 nm	61.65

**Calculated Relative Intensity Colors of Rustenburgite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%
R

Calculated Properties of Rustenburgite

Electron Density:

r_electron=13.6 gm/cc
note: r_{Rustenburgite}=16.7 gm/cc.

Fermion Index

Fermion Index = 0.29164
Boson Index = 0.70836

Photoelectric:

PE_{Rustenburgite}=1,188.37 barns/electron
U=PE_{Rustenburgite} x r_electron=16140.57 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Rustenburgite is Not Radioactive

Rustenburgite Classification

Dana Class:

1.2.5.2 (1)Native Elements

(1.2)with platinum group metals and alloys

(1.2.5)Isoferroplatinum group (Space Group Pm3m)

1.2.5.1 Isoferroplatinum (Pt,Pd)3(Fe,Cu) P m3m 4/m 3 2/m

1.2.5.2 Rustenburgite (Pt,Pd)3Sn F m3m 4/m 3 2/m

1.2.5.3 Atokite (Pd,Pt)3Sn F m3m 4/m 3 2/m

1.2.5.4 Zvyagintsevite (Pd,Pt,Au)3(Pb,Sn) P m3m 4/m 3 2/m

1.2.5.5 Chengdeite Ir3Fe P m3m 4/m 3 2/m

1.2.5.6 Yixunite! Pt3In P m3m 4/m 3 2/m

Strunz Class:

I/A.16-30 I - Elements

I/A - Metallic and intermetallic compounds, Platinum-Iron-compounds with Tin/Lead and related compunds

I/A.16 - Zvyagintsevite - Plumbopalladinite series

I/A.16-10 Zvyagintsevite (Pd,Pt,Au)3(Pb,Sn) P m3m 4/m 3 2/m

I/A.16-20 Atokite (Pd,Pt)3Sn F m3m 4/m 3 2/m

I/A.16-30 Rustenburgite (Pt,Pd)3Sn F m3m 4/m 3 2/m

I/A.16-40 Niggliite PtSn P 6₃/mmc 6/m 2/m 2/m

I/A.16-50 Stannopalladinite (Pd,Cu)3Sn2(?) P 6₃/mmc 6/m 2/m 2/m

I/A.16-60 Palarstanide Pd8(Sn,As)3 P 6₃22 6 2 2

I/A.16-70 Plumbopalladinite Pd3Pb2 P 6₃/mmc 6/m 2/m 2/m

Other Rustenburgite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Rustenburgite :
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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Rustenburgite

(Pt,Pd)3Sn
Dana No: 1.2.5.2 Strunz No: I/A.16-30
Locality:

Notes: