Mineralogy Database

Brizziite-III Mineral Data

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General Brizziite-III Information

Help on Chemical  Formula: Chemical Formula: NaSb+++++O3
Help on Composition: Composition: Molecular Weight = 192.74 gm
   Sodium    11.93 %  Na   16.08 % Na2O
   Antimony  63.17 %  Sb   88.07 % SbO3
   Oxygen    24.90 %  O
            ______        ______ 
            100.00 %      104.15 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaSbO3
Help on Environment: Environment: The result of deep weathering of stibnite.
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: The Cetine mine, approximately 20 km SW of Sienna, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Dr. Giancarlo Brizzi (1936-1992) who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Brizziite-III + Pronunciation Say BRIZZIITE-III
Help on Synonym: Synonym: IMA1993-044

Brizziite-III Image

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  Brizziite-VII   Brizziite-III

Comments: Colorless thin hexagonal plates of brizziite. Brizzite-VII and brizzite-III are the same mineral with different Dana classification numbers.
Location: Le Cetine di Cotorniano, Chiusdino, Siena Province, Tuscany, Italy. Scale: See Image.
© Rruff Database

Brizziite-III Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.00547
Help on Cell Dimensions: Cell Dimensions: a = 5.301, c = 15.932, Z = 6; V = 387.72 Den(Calc)= 4.95
Help on Crystal System: Crystal System: Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.874(1), 1.471(0.69), 2.365(0.69),

Physical Properties of Brizziite-III

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless.
Help on Density: Density: 4.8 - 4.95, Average = 4.87
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Unknown - Minerals too small to observe fractures.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Pearly
Help on Streak: Streak: white

Optical Properties of Brizziite-III

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -3.939 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -3.864 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1486,KPDmeas= 0.1509,KC= 0.0305
Ncalc = 1.15
Help on Optical Data: Optical Data: Uniaxial (-), e=1.631, w=1.84, bire=0.2090.

Calculated Properties of Brizziite-III

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.42 gm/cc
note: Specific Gravity of Brizziite-III =4.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001195361
Boson Index = 0.9998804639
Help on Photoelectric: Photoelectric: PEBrizziite-III = 208.40 barns/electron
U=PEBrizziite-III x rElectron Density= 920.59 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Brizziite-III is Not Radioactive

Brizziite-III Classification

Help on  Dana Class: Dana Class: (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.05)Ilmenite Group Ilmenite FeTiO3 R 3 3 Geikielite MgTiO3 R 3 3 Pyrophanite MnTiO3 R 3 3 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3 Melanostibite Mn(Sb,Fe)O3 R 3 3 Brizziite-III NaSbO3 R 3 3 Akimotoite! (Mg,Fe)SiO3 R 3 3
Help on  Strunz Class: Strunz Class: 04.CB.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CB -With medium-sized cations
04.CB.05 Auroantimonate* AuSbO3 Ortho ? Ortho
04.CB.05 Geikielite MgTiO3 R 3 3
04.CB.05 Brizziite-III NaSbO3 R 3 3
04.CB.05 Brizziite-VII NaSbO3 R 3 3
04.CB.05 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
04.CB.05 Corundum Al2O3 R 3c 3 2/m
04.CB.05 Eskolaite Cr2O3 R 3c 3 2/m
04.CB.05 Hematite Fe2O3 R 3c 3 2/m
04.CB.05 Karelianite V2O3 R 3c 3 2/m
04.CB.05 Ilmenite FeTiO3 R 3 3
04.CB.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
04.CB.05 Pyrophanite MnTiO3 R 3 3
04.CB.05 Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig
04.CB.05 Tistarite! Ti2O3 R 3c 3 2/m

Other Brizziite-III Information

Help on References: References: NAME( MinRec) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Brizziite-III :
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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Dana No: Strunz No: 04.CB.05





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