Barquillite Mineral Data (original) (raw)

General Barquillite Information

Help on Chemical Formula: Chemical Formula:

Cu2CdGeS4

Help on Composition: Composition:

Molecular Weight = 440.38 gm

Cadmium 25.53 % Cd

Copper 28.86 % Cu

Germanium 16.49 % Ge

Sulfur 29.13 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Cu2CdGeS4

Help on Environment: Environment:

The cadmium dominant analog of briartite. A member of the Stannite group.

Help on IMA Status: IMA Status:

Approved IMA 1996 (Dana # Added)

Help on Locality: Locality:

Fuentes Villanas mine, Barquilla Sn-Ge-Cd-Cu-Fe vein-type deposit, southwestern Salamanca, Spain. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after Barquilla, a village near the discovery locality.

Help on Name Pronunciation: Name Pronunciation:

Barquillite + Pronunciation Say BARQUILLITE

Help on Synonym: Synonym:

IMA1996-050

Search for Barquillite Images

Click Here To Search Images:

Barquillite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:1.94495

Help on Cell Dimensions: Cell Dimensions:

a = 5.45, c = 10.6, Z = 2; V = 314.85 Den(Calc)= 4.64

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): 3.1(1), 1.92(0.8), 1.89(0.7),

Physical Properties of Barquillite

Help on Color: Color:

Gray.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Habit: Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Help on Habit: Habit:

Platy - Sheet forms (e.g. micas).

Help on Habit: Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Help on Hardness: Hardness:

4-4.5 - Between Fluorite and Apatite

Help on Luster: Luster:

Metallic

Optical Properties of Barquillite

Help on RL Anisotrophism: RL Anisotrophism:

Very weak.

Help on RL Bireflectance: RL Bireflectance:

Very weak.

Help on RL Color: RL Color:

Gray with a pale violet tint.

Help on RL Pleochroism: RL Pleochroism:

Very weak.

Help on Reflectivity Reflectivity

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

λ R ∑ R(λ)
460 nm 24.42
480 nm 24.18
540 nm 23.29
560 nm 23.19
580 nm 23.04
600 nm 23.07
640 nm 23.28
660 nm 23.46

Standardized Intensity (100%) Reflection Spectra of Barquillite in Oil

λ R ∑ R(λ)
460 nm 10.79
480 nm 10.49
540 nm 9.85
560 nm 9.69
580 nm 9.59
600 nm 9.54
640 nm 9.72
660 nm 9.91

Calculated Relative Intensity Colors of Barquillite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 320% 360% 380%
R

Calculated Relative Intensity Colors of Barquillite in Oil

RelativeIntensity 0% 100% 200% 300% 400% 500% 600% 700% 800% 900% 910%
R

Calculated Properties of Barquillite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.26 gm/cc
note: Specific Gravity of Barquillite =4.64 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Help on Photoelectric: Photoelectric:

PEBarquillite = 92.33 barns/electron
U=PEBarquillite x rElectron Density= 393.03 barns/cc.

Help on Radioactivity: Radioactivity:

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

Barquillite Classification

Help on Dana Class: Dana Class:

02.09.02.11 (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 Barquillite Information

Help on References: References:

NAME( CanMin, 8/1999) PHYS. PROP.(AmMin, V84, p1464) OPTIC PROP.(AmMin, V84, p 1464)

Help on See Also: See Also:

Links to other databases for Barquillite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Barquillite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Barquillite :

A Bijoux Google Search for Barquillite
Adam's Minerals Google Search for Barquillite
Cape Minerals Google Search for Barquillite
Dakota Matrix Minerals Google Search for Barquillite
Excalibur Mineral Corp. Google Search for Barquillite
Exceptional Minerals Google Search for Barquillite
John Betts Fine Minerals Search for Barquillite
McDougall Minerals Google Search for Barquillite
Mineral News Website Link
Rock and Mineral Shows Google Search for Barquillite
Weinrich Minerals, Inc. Google Search for Barquillite

Ask about Barquillite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

Print or Cut-and-Paste your Barquillite Specimen Label here :

Barquillite

Cu2CdGeS4
Dana No: 02.09.02.11 Strunz No: 02.KA.10
Locality:

Notes: