General Hongshiite Information
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Chemical Formula: |
PtCu |
Composition: |
Molecular Weight = 258.63 gm |
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Copper 24.57 % Cu |
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Platinum 75.43 % Pt |
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______ |
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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. |
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Hongshiite Image |
Images:
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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 |
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Hongshiite Crystallography
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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 |
X Ray Diffraction: |
By Intensity(I/Io): 1.91(1), 2.211(1), 4.52(1), |
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Physical Properties of Hongshiite
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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 |
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Optical Properties of Hongshiite
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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 |
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∑ R1(λ) |
∑ R2(λ) |
| 480 nm |
58.90 |
56.70 |

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| 546 nm |
62.80 |
60.50 |

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| 589 nm |
65.80 |
63.80 |

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Calculated Relative Intensity Colors of Hongshiite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
| R1 |
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| R2 |
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Calculated Properties of Hongshiite
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Electron Density: |
relectron=13.0 gm/cc note: rHongshiite =15.7 gm/cc. |
Fermion Index |
Fermion Index = 0.25495 Boson Index = 0.74505 |
Photoelectric: |
PEHongshiite =1,193.30 barns/electron U=PEHongshiite x relectron=15541.65 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hongshiite is Not Radioactive |
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Hongshiite Classification
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Dana Class: |
1.2.3.1 (1)Native Elements |
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(1.2)with platinum group metals and alloys |
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(1.2.3)Dana Group |
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1.2.3.1 Hongshiite * PtCu R 3m 3 2/m |
Strunz Class: |
I/A.14-90 I - Elements |
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I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides |
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I/A.14 - Platinum series |
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I/A.14-10 Rhodium (Rh,Pt) F m3m 4/m 3 2/m |
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I/A.14-20 Palladium Pd,Pt F m3m 4/m 3 2/m |
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I/A.14-30 Iridium (Ir,Os,Ru,Pt) F m3m 4/m 3 2/m |
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I/A.14-70 Platinum Pt F m3m 4/m 3 2/m |
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I/A.14-80 Yixunite! Pt3In P m3m 4/m 3 2/m |
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I/A.14-85 Damiaoite! PtIn2 F m3m 4/m 3 2/m |
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I/A.14-90 Hongshiite PtCu R 3m 3 2/m |
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I/A.14-100 Skaergaardite! CuPd P m3m 4/m 3 2/m |
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Other Hongshiite Information
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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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Print or Cut-and-Paste your Hongshiite Specimen Label here :
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Hongshiite
PtCu
Dana No: 1.2.3.1 Strunz No: I/A.14-90
Locality:
Notes:
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