Brizziite-III Mineral Data (original) (raw)
General Brizziite-III Information
NaSb+++++O3
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
NaSbO3
The result of deep weathering of stibnite.
Approved IMA 1994
The Cetine mine, approximately 20 km SW of Sienna, Tuscany, Italy. Link to MinDat.org Location Data.
For Dr. Giancarlo Brizzi (1936-1992) who discovered the mineral.
IMA1993-044
Brizziite-III Image
Brizziite-III Brizziite-VII 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 |
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Brizziite-III Crystallography
a:c = 1:3.00547
a = 5.301, c = 15.932, Z = 6; V = 387.72 Den(Calc)= 4.95
Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
By Intensity(I/Io): 1.874(1), 1.471(0.69), 2.365(0.69),
Physical Properties of Brizziite-III
{001} Perfect
Colorless.
4.8 - 4.95, Average = 4.87
Transparent
Unknown - Minerals too small to observe fractures.
Encrustations - Forms crust-like aggregates on matrix.
Platy - Sheet forms (e.g. micas).
2 - Gypsum
Non-fluorescent.
Pearly
white
Optical Properties of Brizziite-III
colorless.
colorless.
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
Uniaxial (-), e=1.631, w=1.84, bire=0.2090.
Calculated Properties of Brizziite-III
Bulk Density (Electron Density)=4.42 gm/cc
note: Specific Gravity of Brizziite-III =4.95 gm/cc.
Fermion Index = 0.0001195361
Boson Index = 0.9998804639
PEBrizziite-III = 208.40 barns/electron
U=PEBrizziite-III x rElectron Density= 920.59 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Brizziite-III is Not Radioactive
Brizziite-III Classification
04.03.05.06 (04)Simple Oxides
(04.03)with a cation charge of 3+ (A+++2 O3)
(04.03.05)Ilmenite Group
04.03.05.01 Ilmenite FeTiO3 R 3 3
04.03.05.02 Geikielite MgTiO3 R 3 3
04.03.05.03 Pyrophanite MnTiO3 R 3 3
04.03.05.04 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
04.03.05.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
04.03.05.06 Brizziite-III NaSbO3 R 3 3
04.03.05.07 Akimotoite! (Mg,Fe)SiO3 R 3 3
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
NAME( MinRec) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(MinRec)
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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Print or Cut-and-Paste your Brizziite-III Specimen Label here :
Brizziite-III
NaSb+++++O3
Dana No: 04.03.05.06 Strunz No: 04.CB.05
Locality:
Notes: