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Chvilevaite Mineral Data
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General Chvilevaite Information
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 Chemical Formula: |
Na(Cu,Fe,Zn)2S2 |
| Composition: |
Molecular Weight = 209.96 gm |
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Sodium 10.95 % Na |
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Zinc 6.23 % Zn |
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Iron 15.96 % Fe |
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Copper 36.32 % Cu |
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Sulfur 30.54 % S |
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______ |
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100.00 % |
| Empirical Formula: |
NaCu1.2Fe2+0.6Zn0.2S2 |
| Environment: |
In heavy sands derived from the contact metamorphic zone between a siliceous marble and ultramafic rock. |
| IMA Status: |
Approved IMA 1988 |
| Locality: |
From an unspecified locality in Sichuan Province, China. In the Gavasai ore field, location not further given, USSR. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek "chroma," "color," as all chromium compounds are colored. |
| Synonym: |
ICSD 39255 |
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PDF 42-1366 |
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Chvilevaite Image |
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Images:
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Chvilevaite
Comments: Black metallic chvilevaite in sandstone. Part of a drillcore.
Location: La Serena, Region III, Chile.
Scale: Specimen Size 0.8x1.8 cm.
© Diederik Visser |
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Chvilevaite Crystallography
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| Axial Ratios: |
a:c = 1:1.76813 |
| Cell Dimensions: |
a = 3.873, c = 6.848, Z = 1; V = 88.96 Den(Calc)= 3.92 |
| Crystal System: |
Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: P 3m |
| X Ray Diffraction: |
By Intensity(I/Io): 1.945(1), 2.4(1), 3.02(1), |
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Physical Properties of Chvilevaite
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| Cleavage: |
{???} Perfect |
| Color: |
Bronze, Black. |
| Diaphaneity: |
Opaque |
| Hardness: |
3.5-4 - Copper Penny-Fluorite |
| Luster: |
Metallic |
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Optical Properties of Chvilevaite
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| RL Anisotrophism: |
Strong, from black to white. |
| RL Color: |
Orange, changing to rosy purple with time. |
| RL Pleochroism: |
Distinct, from light orange to dark gray with a lilac tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Chvilevaite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 420 nm |
17.90 |
17.90 |
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| 440 nm |
17.70 |
18.00 |
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| 460 nm |
17.50 |
18.40 |
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| 480 nm |
17.40 |
19.00 |
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| 500 nm |
17.30 |
19.70 |
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| 520 nm |
17.40 |
20.70 |
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| 540 nm |
17.50 |
21.60 |
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| 560 nm |
17.70 |
22.50 |
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| 580 nm |
17.80 |
23.30 |
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| 600 nm |
18.00 |
24.00 |
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| 620 nm |
18.20 |
24.80 |
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| 640 nm |
18.50 |
25.60 |
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| 660 nm |
18.80 |
26.20 |
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| 680 nm |
19.10 |
26.80 |
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| 700 nm |
19.40 |
27.40 |
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Calculated Relative Intensity Colors of Chvilevaite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
450% |
500% |
| R1 |
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| R2 |
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Calculated Properties of Chvilevaite
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| Electron Density: |
Bulk Density (Electron Density)=3.71 gm/cc
note: Specific Gravity of Chvilevaite =3.92 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0082279281
Boson Index = 0.9917720719 |
| Photoelectric: |
PEChvilevaite = 26.00 barns/electron
U=PEChvilevaite x rElectron Density= 96.50 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chvilevaite is Not Radioactive |
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Chvilevaite Classification
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| Dana Class: |
02.05.09.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.05)where Am Bn Xp, with (m+n):p=3:2 |
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(02.05.09)Dana Group |
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02.05.09.01 Chvilevaite Na(Cu,Fe,Zn)2S2 P 3m 3m |
| Strunz Class: |
02.FB.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O |
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02.FB -With Alkalies (without Cl, etc.) |
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02.FB.10 Chvilevaite Na(Cu,Fe,Zn)2S2 P 3m 3m |
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Other Chvilevaite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.74,p946,1989) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Chvilevaite :
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
15 - WWW-MINCRYST
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Chvilevaite
Na(Cu,Fe,Zn)2S2
Dana No: 02.05.09.01 Strunz No: 02.FB.10
Locality:
Notes:
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