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Brizziite

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Le Cetine di Cotorniano Mine (Le Cetine Mine; Cetine Mine; Rosia), Chiusdino, Siena Province, Tuscany, Italy
© Elmar Lackner

Show Brizziite Photos (2)
Formula:
NaSb
5+
 
O
 
3
System:TrigonalColour:Colourless, light pink ...
Lustre:PearlyHardness:2½
Name:For Dr. Giancarlo Brizzi (1936-1992), mineral collector who discovered the first specimens.
This page provides mineralogical data about Brizziite.

Classification of Brizziite

IMA status:Approved 1993
Strunz 8th edition ID:4/C.05-60
Nickel-Strunz 10th (pending) edition ID:4.CB.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
Dana 8th edition ID:44.3.12.1

44 : ANTIMONATES
3 : Miscellaneous
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Type Occurrence of Brizziite

Type Locality:Le Cetine di Cotorniano Mine (Le Cetine Mine; Cetine Mine; Rosia), Chiusdino, Siena Province, Tuscany, Italy
General Appearance of Type Material:Dense aggregates and incrustations of platy hexagonal crystals to 0.2 mm
Place of Conservation of Type Material:University of Florence, Florence, Italy (No. 2037/RI)
Geological Setting of type material:Weathering product of stibnite in an antimony deposit in highly silicified limestone
Associated Minerals at type locality:
StibiconiteSénarmontiteMopungiteCetineite

Physical Properties of Brizziite

Lustre:Pearly
Diaphaneity (Transparency):Transparent
Colour:Colourless, light pink or yellow in aggregates
Streak:White
Hardness (Mohs):2½
Hardness (Vickers):VHN15=41 - 70 kg/mm2
Tenacity:Elastic
Cleavage:Perfect
on {0001}
Density (measured):4.8 g/cm3
Density (calculated):4.95 g/cm3

Crystallography of Brizziite

Crystal System:Trigonal
Class (H-M):3 - Rhombohedral
Space Group:R3
Cell Parameters:a = 5.301Å, c = 15.932Å
Ratio:a:c = 1 : 3.005
Unit Cell Volume:V 387.72 ų (Calculated from Unit Cell)
Z:6
Morphology:Hexagonal crystals, flattened on {0001}, in dense aggregates and incrustations
Twinning:On {0001}, polysynthetic, common
X-Ray Powder Diffraction:
d-spacingIntensity
1.874 (100)
2.365 (69)
1.471 (69)
2.650 (67)
5.30 (53)
3.00 (50)
Comments:Recorded on type material

Optical Data of Brizziite

Type:Uniaxial (-)
RI values: nω = 1.840 nε = 1.631
Maximum Birefringence:δ = 0.209

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Brizziite

Formula:
NaSb
5+
 
O
 
3
Essential elements:Na, O, Sb
All elements listed in formula:Na, O, Sb
Analyical Data:(1) Averages of 40 electron microprobe analyses on three grains of type material
(2) Theoretical values
         (1)      (2)

Sb2O5  (83.28)  (83.92)
Na2O   (15.98)  (16.08)

sum     99.26   100.00 wt.-%

Relationship of Brizziite to other Species

Related Minerals - Nickel-Strunz Grouping):
4.CB.05Corundum
Al
 
2
O
 
3
4.CB.05Ecandrewsite
(Zn,Fe
2+
 
,Mn
2+
 
)TiO
 
3
4.CB.05Eskolaite
Cr
 
2
O
 
3
4.CB.05Geikielite
MgTiO
 
3
4.CB.05Hematite
Fe
 
2
O
 
3
4.CB.05Ilmenite
Fe
2+
 
TiO
 
3
4.CB.05Karelianite
V
 
2
O
 
3
4.CB.05Melanostibite
Mn
2+
 
(Sb
5+
 
,Fe
3+
 
)O
 
3
4.CB.05Pyrophanite
Mn
2+
 
TiO
 
3
4.CB.05Auroantimonate
AuSbO
 
3
4.CB.05Romanite
([],Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
4.CB.10Avicennite
Tl
 
2
O
 
3
4.CB.10Bixbyite
(Mn
3+
 
,Fe
3+
 
)
 
2
O
 
3
4.CB.15Armalcolite
(Mg,Fe
2+
 
)Ti
 
2
O
 
5
4.CB.15Pseudobrookite
Fe
 
2
TiO
 
5
4.CB.15Mongshanite
(Mg,Cr,Fe
2+
 
)
 
2
(Ti,Zr)
 
5
O
 
12
4.CB.20Zincohögbomite-2N2S
Ti(Zn,Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.CB.20Zincohögbomite-2N6S
Ti(Zn,Mg,Fe)
 
6
Al
 
16
O
 
31
(OH)
4.CB.20Magnesiohögbomite-6N6S
Ti(Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.CB.20Magnesiohögbomite-2N3S
Ti(Mg,Fe)
 
3
Al
 
10
O
 
19
(OH)
4.CB.20Magnesiohögbomite-2N2S
Ti(Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.CB.20Ferrohögbomite-6N12S
Ti(Fe,Mg)
 
4
Al
 
12
O
 
23
(OH)
4.CB.25Pseudorutile
Fe
 
2
Ti
 
3
O
 
9
4.CB.25Tietaiyangite
Fe
3+
4
Fe
2+
 
TiO
 
9
4.CB.30Berdesinskiite
V
3+
2
TiO
 
5
4.CB.35Kyzylkumite
V
 
2
Ti
 
3
O
 
9
4.CB.35Olkhonskite
(Cr,V)
 
2
Ti
 
3
O
 
9
4.CB.35Schreyerite
V
 
2
Ti
 
3
O
 
9
4.CB.40Kamiokite
Fe
 
2
Mo
 
3
O
 
8
4.CB.40Nolanite
(V,Fe,Fe,Ti)
 
10
O
 
14
(OH)
 
2
4.CB.40Rinmanite
Zn
 
2
Sb
 
2
Mg
 
2
Fe
 
4
O
 
14
(OH)
 
2
4.CB.45Claudetite
As
 
2
O
 
3
4.CB.45Stibioclaudetite
AsSbO
 
3
4.CB.50Arsenolite
As
 
2
O
 
3
4.CB.50Sénarmontite
Sb
 
2
O
 
3
4.CB.55Valentinite
Sb
 
2
O
 
3
4.CB.60Bismite
Bi
 
2
O
 
3
4.CB.65Sphaerobismoite
Bi
 
2
O
 
3
4.CB.70Sillénite
Bi
 
12
SiO
 
20

Other Names for Brizziite

German names:
Brizziit
Russian names:
Бриззиит
Spanish names:
Brizziita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Brizziite

Reference List:Olmi, F. and Sabelli, C. (1994): Brizziite, NaSbO3, a new mineral from the Cetine mine (Tuscany, Italy): description and crystal structure. European Journal of Mineralogy 6, 667-672. - American Mineralogist (1995), 80, 630 (abstract).

Sabelli, C., Olmi, F. and Santucci, A. (1994): Brizziite, una nuova specie da Le Cetine di Cotorniano (SI). Rivista Mineralogica Italiana 1994, 271-273 (in Italian).

Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 77.

Internet Links for Brizziite

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    Localities for Brizziite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Tuscany
      • Siena Province
        • Chiusdino
    		Eur.J.Min. (1994) 6, 667-672; Mineralogical Record 27, 201; Rivista Mineralogica Italiana (1994) 3/1994, 271-273.
    Mineral and/or Locality
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