Hongshiite Mineral Data

Hongshiite Mineral Data +

General Hongshiite Information

Chemical Formula:

PtCu

Composition:

Molecular Weight = 258.63 gm

Copper 24.57 % Cu

Platinum 75.43 % Pt

______

100.00 %

Empirical Formula:

PtCu

Environment:

Apatite-bearing actinolized diopsidite.

IMA Status:

Not Approved IMA 1974

Locality:

Hong district, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Hongshiite Image

Images:

Hongshiite Palladodymite Ruthenium

Comments: Palladodymite (light gray, in two small grains), hongshiite (pale creamy grayish, tarnished brownish) in massive ruthenium. Polished section (from microprobe analysis) in reflected light.
Location: Miass River, Zlatoust, Ilmen Mts, Chelyabinsk Oblast', Urals Region, Russia. Scale: Picture size 0.09 mm.
© Thomas Witzke / Abraxas-Verlag

Hongshiite Crystallography

Axial Ratios:

a:c = 1:1.23301

Cell Dimensions:

a = 10.703, c = 13.197, Z = 48; V = 1,309.23 Den(Calc)= 15.74

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 1.91(1), 2.211(1), 4.52(1),

Physical Properties of Hongshiite

Cleavage:

None

Color:

Lead gray, Bronze.

Density:

15.63

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

5 - Apatite

Luster:

Metallic

Streak:

black

Optical Properties of Hongshiite

RL Anisotrophism:

Weak to moderate, dull gray to dull reddish brown.

RL Color:

Bright white with a slight brownish tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Hongshiite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
480 nm	58.90	56.70
546 nm	62.80	60.50
589 nm	65.80	63.80

**Calculated Relative Intensity Colors of Hongshiite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%
R₁
R₂

Calculated Properties of Hongshiite

Electron Density:

r_electron=13.0 gm/cc
note: r_Hongshiite=15.7 gm/cc.

Fermion Index

Fermion Index = 0.25495
Boson Index = 0.74505

Photoelectric:

PE_Hongshiite=1,193.30 barns/electron
U=PE_Hongshiite x r_electron=15541.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hongshiite is Not Radioactive

Hongshiite Classification

Dana Class:

1.2.3.1 (1)Native Elements

(1.2)with platinum group metals and alloys

(1.2.3)Dana Group

1.2.3.1 Hongshiite * PtCu R 3m 3 2/m

Strunz Class:

I/A.14-90 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.14 - Platinum series

I/A.14-10 Rhodium (Rh,Pt) F m3m 4/m 3 2/m

I/A.14-20 Palladium Pd,Pt F m3m 4/m 3 2/m

I/A.14-30 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m

I/A.14-70 Platinum Pt F m3m 4/m 3 2/m

I/A.14-80 Yixunite! Pt3In P m3m 4/m 3 2/m

I/A.14-85 Damiaoite! PtIn2 F m3m 4/m 3 2/m

I/A.14-90 Hongshiite PtCu R 3m 3 2/m

I/A.14-100 Skaergaardite! CuPd P m3m 4/m 3 2/m

Other Hongshiite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Hongshiite :
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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Hongshiite

PtCu
Dana No: 1.2.3.1 Strunz No: I/A.14-90
Locality:

Notes: