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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Tongxinite Mineral Data
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General Tongxinite Information
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Chemical Formula: |
Cu2Zn |
Composition: |
Molecular Weight = 192.48 gm |
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Zinc 33.97 % Zn |
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Copper 66.03 % Cu |
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______ |
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100.00 % |
Empirical Formula: |
Cu2Zn |
Environment: |
Silicified oxidized zone in Cu ore deposits. |
IMA Status: |
Not Submitted IMA |
Locality: |
Yulong ore district and Malasondo district, Tibet. Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition (tong=copper, xin=zinc). |
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Tongxinite Image |
Images:
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Tongxinite
Comments: Tiny nugget with sorosite in a geletin capsule.
Location: Newjansk, Ural, Russia.
Scale: Not given.
© Diederik Visser |
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Tongxinite Crystallography
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Cell Dimensions: |
a = 7.735, Z = 12; V = 462.79 Den(Calc)= 8.29 |
Crystal System: |
Isometric Space Group: Unk |
X Ray Diffraction: |
By Intensity(I/Io): 2.1(1), 2.153(0.8), 1.815(0.7),1.849(0.7), |
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Physical Properties of Tongxinite
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Color: |
Golden yellow. |
Diaphaneity: |
Opaque |
Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Habit: |
Tarnishes - Freshly fractured surfaces form a surface oxidation film |
Luster: |
Metallic |
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Optical Properties of Tongxinite
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RL Color: |
Gold colored, tarnishing blue. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Tongxinite in Air
λ |
R |
![](../images/Reflect_scale_v.gif) |
∑ R(λ) |
480 nm |
41.12 |
![](../images/480nm.BMP) |
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500 nm |
46.60 |
![](../images/500nm.BMP) |
520 nm |
49.02 |
![](../images/520nm.BMP) |
540 nm |
56.63 |
![](../images/540nm.BMP) |
560 nm |
58.00 |
![](../images/560nm.BMP) |
580 nm |
61.45 |
![](../images/580nm.BMP) |
600 nm |
65.10 |
![](../images/600nm.BMP) |
620 nm |
68.80 |
![](../images/620nm.BMP) |
640 nm |
73.53 |
![](../images/640nm.BMP) |
660 nm |
77.50 |
![](../images/660nm.BMP) |
Calculated Relative Intensity Colors of Tongxinite in Air
Relative Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
R |
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Calculated Properties of Tongxinite
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Electron Density: |
Bulk Density (Electron Density)=7.58 gm/cc note: Specific Gravity of Tongxinite =8.29 gm/cc. |
Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
Photoelectric: |
PETongxinite = 48.02 barns/electron U=PETongxinite x rElectron Density= 363.96 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tongxinite is Not Radioactive |
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Tongxinite Classification
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Dana Class: |
01.00.00.00 (01)Native Elements |
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(01.00)Without Dana Classification Numbers |
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(01.00.00)Alloys |
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01.00.00.00 Antitaenite* gamma-Fe3Ni Unk Cubic |
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01.00.00.00 Goldamalgam* (Au,Ag)Hg I m3m 4/m 3 2/m |
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01.00.00.00 IMA2007-036 TiFeSi2 Pbam 2/m 2/m 2/m |
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01.00.00.00 Rhenium* Re P 63/mmc 6/m 2/m 2/m |
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01.00.00.00 Tantalum* Ta I m3m 4/m 3 2/m |
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01.00.00.00 Titanium* Ti P 63/mmc 6/m 2/m 2/m |
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01.00.00.00 Tongxinite* Cu2Zn Unk Cubic |
Strunz Class: |
01.AB.10b 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AB -Zinc-brass family (Cu-Zn alloys) |
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01.AB.10b Danbaite CuZn2 Unk Cubic |
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01.AB.10b Tongxinite* Cu2Zn Unk Cubic |
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Other Tongxinite Information
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References: |
NAME( AmMin, V85, p264) PHYS. PROP.(AmMin, V85, p264) OPTIC PROP.(AmMin, V85, p264) |
See Also: |
Links to other databases for Tongxinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Tongxinite Specimen Label here :
Tongxinite
Cu2Zn
Dana No: 01.00.00.00 Strunz No: 01.AB.10b
Locality:
Notes:
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