General Braithwaiteite Information

Help on Chemical Formula: Chemical Formula: NaCu5(Ti,Sb)2O2(AsO4)4[AsO3(OH)]2•8H2O

Help on Composition: Composition: Molecular Weight = 1,574.79 gm

Sodium 1.27 % Na 1.71 % Na₂O

Titanium 2.74 % Ti 4.57 % TiO₂

Copper 20.86 % Cu 26.11 % CuO

Antimony 11.60 % Sb 13.12 % SbO

Arsenic 28.16 % As 43.20 % As₂O₅

Hydrogen 1.15 % H 10.30 % H₂O

Oxygen 34.22 % O

______ ______

100.00 % 99.01 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula: Na_0.87Cu_5.17Ti_0.9Sb_1.5O₂4(AsO₄)_0.98(AsO₃OH)₂ƒL8(H₂O)

Help on Environment: Environment: Secondary mineral formed by oxidation of primary enargite by Na- and Ti-rich fluids in an arid environment.

Help on IMA Status: IMA Status: Approved IMA 2006

Help on Locality: Locality: Veta Negra, Laurani, Bolivia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin: Named for Richard Braithwaite, University of Reading, United Kingdom.

Help on Synonym: Synonym: IMA2006-050

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Braithwaiteite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0..&checktime(7114,1,1,':').0802

Help on Cell Dimensions: Cell Dimensions: a = 7.0308, b = 9.8823, c = 10.6754, Z = 1; alpha = 106.973°, beta = 104.274°, gamma = 93.839° V = 685.98 Den(Calc)= 3.81

Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/I_o): 9.825(1), 2.947(0.6), 5.887(0.5),2.442(0.3), 2.736(0.3), 3.232(0.3), 3.354(0.3), 4.635(0.3),

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Optical Properties of Braithwaiteite

Help on Optical Data: Optical Data: NCalc= 1.66 - from Gladstone-Dale relationship (KC = 0.1706) where Ncalc=Dcalc*KC+1

Calculated Properties of Braithwaiteite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.61 gm/cc
note: Specific Gravity of Braithwaiteite =3.85 gm/cc.

Help on Fermion Index: Fermion Index: Fermion Index = 0.0037040949
Boson Index = 0.9962959051

Help on Photoelectric: Photoelectric: PE_{Braithwaiteite} = 65.68 barns/electron
U=PE_{Braithwaiteite} x rElectron Density= 237.20 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Braithwaiteite is Not Radioactive

Braithwaiteite Classification

Help on Dana Class: Dana Class: 39.02.07.03 (39)Hydrated Acid Phosphates, etc

(39.02)H2 (AB)5 (XO4)4 ƒL x(H2O)

(39.02.07)Lindackerite Group

39.02.07.01 Lindackerite CuCu4(AsO4)2(AsO3OH)2•~9(H2O) P1 1

39.02.07.02 IMA2008-010! CaCu4(AsO4)2(AsO3OH)2•10H2O P1 1

39.02.07.03 Braithwaiteite NaCu5(Ti,Sb)2O2(AsO4)4[AsO3(OH)]2•8H2O P1 1

39.02.07.04 Veselovskyite (Zn,Cu,Co)Cu4(AsO4)2(AsO3OH)2•9H2O P1 1

Help on Strunz Class: Strunz Class: 08.DB.75 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DB -With only medium-sized cations, (OH, etc.):RO4 < 1:1

08.DB.75 Braithwaiteite NaCu5(Ti,Sb)2O2(AsO4)4[AsO3(OH)]2•8H2O P1 1

Other Braithwaiteite Information

Help on References: References: NAME( AmMin, v94:561) PHYS. PROP.(AmMin, v94:561)

Help on See Also: See Also: Links to other databases for Braithwaiteite :
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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