Briartite Mineral Data (original) (raw)

General Briartite Information

Help on Chemical Formula: Chemical Formula:

Cu2(Zn,Fe)GeS4

Help on Composition: Composition:

Molecular Weight = 390.97 gm

Zinc 12.54 % Zn

Iron 3.57 % Fe

Copper 32.51 % Cu

Germanium 18.57 % Ge

Sulfur 32.81 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Cu2Zn0.75Fe2+0.25GeS4

Help on Environment: Environment:

As inclusions in other Ge-Ga-bearing sulfides.

Help on IMA Status: IMA Status:

Approved IMA 1965

Help on Locality: Locality:

From Kipushi, Shaba Province, Zaire. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

For Gaston Briart, who studied the Kipushi deposit.

Help on Name Pronunciation: Name Pronunciation:

Briartite + Pronunciation Say BRIARTITE

Help on Synonym: Synonym:

ICSD 47165

PDF 26-527

Briartite Image

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

Click Here for Larger Briartite Image Briartite Catamarcaite Bornite Comments: Briartite-type phase (Bri) in close association with catamarcaite (Ct) lining a cavity in massive bornite (Bn) - chalcocite (Cc) ore; Sp is sphalerite (CanMin v44:1481). Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina..Scale: See Image. © Canadian Mineralogist

Briartite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:1.97556

Help on Cell Dimensions: Cell Dimensions:

a = 5.32, c = 10.51, Z = 2; V = 297.46 Den(Calc)= 4.36

Help on Crystal System: Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.06(1), 1.87(0.5), 1.89(0.5),

Click Here for Large Briartite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

| | Wintenberger M , Materials Research Bulletin , 14 (1979) p.1195-1202, Etude de la structure cristallographique et magnetique de Cu2FeGeS4 et remarque, sur la structure magnetique de Cu2MnSnS4 | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Briartite

Help on Color: Color:

Blue gray, Gray, Iron gray.

Help on Density: Density:

4.5

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Hardness: Hardness:

3.5-4 - Copper Penny-Fluorite

Help on Luster: Luster:

Metallic

Optical Properties of Briartite

Help on RL Anisotrophism: RL Anisotrophism:

Weak in air, distinct in oil.

Help on RL Color: RL Color:

Gray to gray blue.

Help on Reflectivity Reflectivity

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

λ R ∑ R(λ)
400 nm 23.40
420 nm 24.20
440 nm 25.00
460 nm 25.70
480 nm 26.40
500 nm 27.00
520 nm 27.40
540 nm 27.60
560 nm 27.50
580 nm 27.20
600 nm 26.80
620 nm 26.00
640 nm 25.00
660 nm 23.80
680 nm 22.50
700 nm 21.20

Calculated Relative Intensity Colors of Briartite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 320% 350%
R

Calculated Properties of Briartite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.08 gm/cc
note: Specific Gravity of Briartite =4.36 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEBriartite = 35.41 barns/electron
U=PEBriartite x rElectron Density= 144.54 barns/cc.

Help on Radioactivity: Radioactivity:

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

Briartite Classification

Help on Dana Class: Dana Class:

02.09.02.03 (02)Sulfides - Including Selenides and Tellurides

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

(02.09.02)Stannite Group (Tetragonal: I-42m) A2BCS type

02.09.02.01 Stannite Cu2FeSnS4 I 42m 4 2m

02.09.02.02 Cernyite Cu2CdSnS4 I 42m 4 2m

02.09.02.03 Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m

02.09.02.04 Kuramite Cu3SnS4 I 42m 4 2m

02.09.02.05 Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 432, P 43m, or P m3m Cubic

02.09.02.06 Hocartite Ag2FeSnS4 I 42m 4 2m

02.09.02.07 Pirquitasite Ag2ZnSnS4 I 42m 4 2m

02.09.02.08 Velikite Cu2HgSnS4 I 42m 4 2m

02.09.02.09 Kesterite Cu2(Zn,Fe)SnS4 I 4 4

02.09.02.10 Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m

02.09.02.11 Barquillite! Cu2CdGeS4 I 42m 4 2m

Help on Strunz Class: Strunz Class:

02.KA.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.K - Sulfarsenates, Sulfantimonates

02.KA -Sulfarsenates with (As,Sb)S4 tetrahedra

02.KA.10 Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m

02.KA.10 Barquillite! Cu2CdGeS4 I 42m 4 2m

02.KA.10 Famatinite Cu3SbS4 I 42m 4 2m

02.KA.10 Luzonite Cu3AsS4 I 42m 4 2m

02.KA.10 Permingeatite Cu3SbSe4 I 42m 4 2m

Other Briartite Information

Help on References: References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

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

Briartite

Cu2(Zn,Fe)GeS4
Dana No: 02.09.02.03 Strunz No: 02.KA.10
Locality:

Notes: