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Vulcanite Mineral Data
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General Vulcanite Information
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 Chemical Formula: |
CuTe |
| Composition: |
Molecular Weight = 191.15 gm |
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Copper 33.24 % Cu |
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Tellurium 66.76 % Te |
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______ |
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100.00 % |
| Empirical Formula: |
CuTe |
| Environment: |
Intermixed with other tellurides. |
| IMA Status: |
Approved IMA 1961 |
| Locality: |
Good Hope mine, Vulcan, Gunnison County, Colorado, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Vulcanite + Pronunciation  |
| Synonym: |
ICSD 42591 |
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PDF 22-252 |
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Vulcanite Image |
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Images:
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Images:
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Cameronite Rickardite Vulcanite
Comments: Gray metallic massive cameronite showing subconchoidal fracture associated with purple rickardite and bronzy plates of vulcanite in a mass of tellurium, co-type specimen.
Location: Good Hope mine, Vulcan District, Gunnison County, Colorado, USA.
Scale: See Image.
© Rruff Database |
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Vulcanite Crystallography
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| Axial Ratios: |
a:b:c =0.5884:1:0.4532 |
| Cell Dimensions: |
a = 4.09, b = 6.95, c = 3.15, Z = 2; V = 89.54 Den(Calc)= 7.09 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmnm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.03(1), 2.86(0.7), 3.52(0.6), |
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Physical Properties of Vulcanite
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| Cleavage: |
{hk0} Good, {h0l} Indistinct |
| Color: |
Bronze, Light bronze. |
| Density: |
7.1 |
| Diaphaneity: |
Opaque |
| Fracture: |
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite). |
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Habit: |
Twinning Common - Crystals are usually twinned. |
| Hardness: |
1-2 - Between Talc and Gypsum |
| Luster: |
Metallic |
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Optical Properties of Vulcanite
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| RL Anisotrophism: |
Very strong, brilliant yellow-white, grayish yellow-white, yellow-orange to gray. |
| RL Pleochroism: |
Very strong, bright yellow to blue-gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Vulcanite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
25.60 |
30.70 |
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| 420 nm |
24.40 |
30.00 |
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| 440 nm |
23.00 |
30.50 |
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| 460 nm |
21.30 |
37.00 |
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| 480 nm |
19.70 |
47.90 |
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| 500 nm |
18.10 |
56.80 |
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| 520 nm |
16.60 |
63.40 |
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| 540 nm |
15.20 |
67.80 |
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| 560 nm |
13.80 |
70.80 |
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| 580 nm |
12.70 |
73.10 |
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| 600 nm |
11.80 |
74.90 |
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| 620 nm |
11.30 |
76.40 |
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| 640 nm |
11.20 |
77.40 |
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| 660 nm |
11.60 |
78.20 |
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| 680 nm |
12.90 |
78.90 |
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| 700 nm |
15.00 |
79.30 |
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Calculated Relative Intensity Colors of Vulcanite in Air
Relative
Intensity |
0% |
70% |
100% |
140% |
210% |
280% |
350% |
420% |
490% |
560% |
630% |
| R1 |
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| R2 |
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Calculated Properties of Vulcanite
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| Electron Density: |
Bulk Density (Electron Density)=6.01 gm/cc
note: Specific Gravity of Vulcanite =7.09 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEVulcanite = 258.05 barns/electron
U=PEVulcanite x rElectron Density=1,550.58 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vulcanite is Not Radioactive |
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Vulcanite Classification
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| Dana Class: |
02.08.13.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.13)Dana Group |
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02.08.13.01 Vulcanite CuTe Pmnm 2/m 2/m 2/m |
| Strunz Class: |
02.CB.75 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.75 Vulcanite CuTe Pmnm 2/m 2/m 2/m |
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Other Vulcanite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Vulcanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Vulcanite
CuTe
Dana No: 02.08.13.01 Strunz No: 02.CB.75
Locality:
Notes:
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