Ovamboite Mineral Data (original) (raw)

General Ovamboite Information

Help on Chemical Formula: Chemical Formula:

Cu20(Fe,Cu,Zn)6W2Ge6S32

Help on Composition: Composition:

Molecular Weight = 3,470.24 gm

Vanadium 0.09 % V

Zinc 3.28 % Zn

Gallium 0.46 % Ga

Iron 4.67 % Fe

Copper 39.21 % Cu

Tin 0.03 % Sn

Germanium 9.86 % Ge

Molybdenum 1.00 % Mo

Arsenic 2.55 % As

Tungsten 9.70 % W

Sulfur 29.17 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Cu21.41Fe2+2.9Zn1.74W1.83Mo0.36V2+0.06Sn0.01Ge4.71As1.18Ga0.23S31.57

Help on Environment: Environment:

In a germanium-bearing massive-sulfide base-metal deposit.

Help on IMA Status: IMA Status:

Approved IMA 2003 (Dana # Added)

Help on Locality: Locality:

Tsumeb deposit, Ovamboland, Namibia, and (2) the Maikain deposit, Kazakhstan. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the locality.

Help on Synonym: Synonym:

IMA1992-039

Ovamboite Image

Click Here for Larger Ovamboite Image in a New Browser Window Images:

Click Here for Larger Ovamboite Image Ovamboite Comments: BSE image of ovamboite (ov), germanite (germ) and chalcocite (cc). Location: Tsumeb deposit, Namibia.Scale: See Image. © Diederik Visser

Ovamboite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 10.68, Z = 1; V = 1,218.19 Den(Calc)= 4.73

Help on Crystal System: Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: P 43n

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.08(1)(222), 1.887(0.7)(440), 1.612(0.5)(622),2.67(0.2)(400), 1.225(0.15)(662), 1.333(0.1)(800), 1.543(0.1)(444),

Physical Properties of Ovamboite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Gray.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Habit: Habit:

Cubic Crystals - Occurs as cubic shaped crystals.

Help on Habit: Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Help on Hardness: Hardness:

3.5 - Copper Penny

Help on Luster: Luster:

Metallic

Optical Properties of Ovamboite

Help on RL Anisotrophism: RL Anisotrophism:

None.

Help on RL Bireflectance: RL Bireflectance:

None.

Help on RL Color: RL Color:

Pale yellowish pink with no internal reflections.

Help on RL Pleochroism: RL Pleochroism:

None.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Ovamboite in Air

λ R ∑ R(λ)
470 nm 24.00
546 nm 24.30
589 nm 24.40
650 nm 24.00

Calculated Relative Intensity Colors of Ovamboite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 320% 360% 370%
R

Calculated Properties of Ovamboite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.37 gm/cc
note: Specific Gravity of Ovamboite =4.73 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEOvamboite = 145.87 barns/electron
U=PEOvamboite x rElectron Density= 637.34 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ovamboite is Not Radioactive

Ovamboite Classification

Help on Dana Class: Dana Class:

02.09.04.04 (02)Sulfides - Including Selenides and Tellurides

(02.09)where Am Bn Xp, with (m+n):p=1:1

(02.09.04)Germanite Group

02.09.04.01 Renierite (Cu,Zn)11(Ge,As)2Fe4S16 P 42c- 4 2m

02.09.04.02 Germanite Cu26Fe4Ge4S32 P 43n 4 3m

02.09.04.03 Maikainite! Cu20(Fe,Cu)6Mo2Ge6S32 P 43n 4 3m

02.09.04.04 Ovamboite! Cu20(Fe,Cu,Zn)6W2Ge6S32 P 43n 4 3m

Help on Strunz Class: Strunz Class:

02.CB.30 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.C - Metal Sulfides, M:S = 1:1 (and similar)

02.CB -With Zn, Fe, Cu, Ag, Au, etc

02.CB.30 Colusite Cu12-13V(As,Sb,Sn,Ge)3S16 P 43n 4 3m

02.CB.30 Germanite Cu26Fe4Ge4S32 P 43n 4 3m

02.CB.30 Germanocolusite Cu13V(Ge,As)3S16 P 43n 4 3m

02.CB.30 Nekrasovite Cu26V2(Sn,As,Sb)6S32 P 43n 4 3m

02.CB.30 Stibiocolusite Cu13V(Sb,As,Sn)3S16 P 43n 4 3m

02.CB.30 Maikainite! Cu20(Fe,Cu)6Mo2Ge6S32 P 43n 4 3m

02.CB.30 Ovamboite! Cu20(Fe,Cu,Zn)6W2Ge6S32 P 43n 4 3m

Other Ovamboite Information

Help on References: References:

NAME( CanMin, 42:1250) PHYS. PROP.(CanMin, 42:1250) OPTIC PROP.(CanMin, 42:1250)

Help on See Also: See Also:

Links to other databases for Ovamboite :
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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Ask about Ovamboite here :
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Print or Cut-and-Paste your Ovamboite Specimen Label here :

Ovamboite

Cu20(Fe,Cu,Zn)6W2Ge6S32
Dana No: 02.09.04.04 Strunz No: 02.CB.30
Locality:

Notes: