Tongxinite Mineral Data

Tongxinite Mineral Data

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General Tongxinite Information

Chemical Formula:

Cu2Zn

Composition:

Molecular Weight = 192.48 gm

Zinc 33.97 % Zn

Copper 66.03 % Cu

______

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).

Search for Tongxinite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Tongxinite Crystallography

Cell Dimensions:

a = 7.735, Z = 12; V = 462.79 Den(Calc)= 8.29

Crystal System:

IsometricSpace Group: Unk

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

By Intensity(I/I_o): 2.1(1), 2.153(0.8), 1.815(0.7),1.849(0.7),

Physical Properties of Tongxinite

Color:

Golden yellow.

Diaphaniety:

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

Optical Properties of Tongxinite

RL Color:

Gold colored, tarnishing blue.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Tongxinite in Air**
λ	R	∑ R(λ)
480 nm	41.12
500 nm	46.60
520 nm	49.02
540 nm	56.63
560 nm	58.00
580 nm	61.45
600 nm	65.10
620 nm	68.80
640 nm	73.53
660 nm	77.50

**Calculated Relative Intensity Colors of Tongxinite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R

Calculated Properties of Tongxinite

Electron Density:

r_electron=7.58 gm/cc
note: r_Tongxinite=8.29 gm/cc.

Fermion Index

Fermion Index = 0.01392
Boson Index = 0.98608

Photoelectric:

PE_Tongxinite= 48.02 barns/electron
U=PE_Tongxinite x r_electron= 363.96 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tongxinite is Not Radioactive

Tongxinite Classification

Dana Class:

1.0.0.0 (1)Native Elements

(1.0)Without Dana Classification Numbers

(Alloys)

Strunz Class:

I/X.00-00 I - Elements

I/X - Unclassified Strunz Elements

I/X.00 - Alloys

Other Tongxinite Information

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 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Ask about Tongxinite here :
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Print or Cut-and-Paste your Tongxinite Specimen Label here :

Tongxinite

Cu2Zn
Dana No: Unknown Strunz No: I/X.00-00
Locality:

Notes: