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Bazzite

Big Photo

Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway
© OT. Ljostad

Show Bazzite Photos (37)
Formula:
Be
 
3
Sc
 
2
Si
 
6
O
 
18
Colour:Deep blue or other ...Hardness:6½ - 7
Name:Named in 1915 for Alessandro E. Bazzi, discoverer of the mineral.


The scandium analogue of Beryl.

Typically found as small to tiny hexagonal crystals with a deep blue or blue-green color. (Hard to distinguish from beryl.)

Classification of Bazzite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/E.12-20
Nickel-Strunz 10th (pending) edition ID:9.CJ.05

9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
Dana 7th edition ID:61.1.1.2
Dana 8th edition ID:61.1.1.2

61 : CYCLOSILICATES Six-Membered Rings
1 : Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
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Type Occurrence of Bazzite

Type Locality:Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Year of Discovery:1915

Occurrences of Bazzite

Geological Setting:Found in miarolitic cavities in granites, granite pegmatites and in Alpine veins associated with pegmatitic minerals.

Physical Properties of Bazzite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Deep blue or other shades of blue, blue-green.
Streak:White
Hardness (Mohs):6½ - 7
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Poor/Indistinct
Poor on {0001}.
Fracture:Irregular/Uneven
Density (measured):2.77 - 2.8 g/cm3
Density (calculated):2.82 g/cm3

Chemical Properties of Bazzite

Formula:
Be
 
3
Sc
 
2
Si
 
6
O
 
18
Essential elements:Be, O, Sc, Si
All elements listed in formula:Be, O, Sc, Si
Analytical Data:Al may substitute for Sc to a small extent.
Common Impurities:Fe,Mn,Mg,Li,Na,K,Rb,Cs
Relationship of Bazzite to other Species
Related Minerals - Nickel-Strunz Grouping):

- + 
9.CJ.05Beryl
Be
 
3
Al
 
2
Si
 
6
O
 
18
9.CJ.05Indialite
Mg
 
2
Al
 
4
Si
 
5
O
 
18
9.CJ.05Stoppaniite
(Na,[ ])
 
2
(Fe,Al,Mg)
 
4
[Be
 
6
Si
 
12
O
 
36
]·2H2O
9.CJ.10Cordierite
(Mg,Fe)
 
2
Al
 
4
Si
 
5
O
 
18
9.CJ.10Sekaninaite
(Fe,Mg)
 
2
Al
 
4
Si
 
5
O
 
18
9.CJ.15aCombeite
Na
 
2
Ca
 
2
Si
 
3
O
 
9
9.CJ.15bImandrite
Na
 
12
Ca
 
3
Fe
3+
2
[Si
 
6
O
 
18
]
 
2
9.CJ.15aKazakovite
Na
 
6
Ti[Si
 
6
O
 
16
(OH)
 
2
]
9.CJ.15cKoashvite
Na
 
6
(Ca,Mn)(Ti,Fe)Si
 
6
O
 
18
·H
 
2
O
9.CJ.15aLovozerite
Na
 
2
Ca(Zr,Ti)[Si
 
6
O
 
12
(OH,O)
 
6
]*H
 
2
O
9.CJ.15aTisinalite
Na
 
3
H
 
3
(Mn,Ca,Fe)TiSi
 
6
(O,OH)
 
18
·2H
 
2
O
9.CJ.15aZirsinalite
Na
 
6
(Ca,Mn
2+
 
,Fe
2+
 
)Zr[Si
 
6
O
 
18
]
9.CJ.15aLitvinskite
Na
 
2
([],Na,Mn)ZrSi
 
6
O
 
12
(OH,O)
 
6
9.CJ.15aKapustinite
Na
 
5
(Na,Mn
2+
 
)
 
<1
Zr[Si
 
6
O
 
16
(OH)
 
2
]
9.CJ.25Baratovite
KCa
 
7
(Ti,Zr)
 
2
Li
 
3
Si
 
12
O
 
36
F
 
2
9.CJ.25Katayamalite
KCa
 
7
Ti
 
2
Li
 
3
Si
 
12
O
 
36
(OH)
 
2
9.CJ.25Aleksandrovite
KCa
 
7
Sn
 
2
Li
 
3
Si
 
12
O
 
30
F
 
2
9.CJ.30Dioptase
Cu
 
6
(Si
 
6
O
 
18
)·6H
 
2
O
9.CJ.35Kostylevite
K
 
2
ZrSi
 
3
O
 
9
·H
 
2
O
9.CJ.40Petarasite
Na
 
5
Zr
 
2
[(OH,Cl)|Si
 
6
O
 
18
]·2H
 
2
O
9.CJ.45Gerenite-(Y)
(Ca,Na)
 
2
(Y,REE)
 
3
Si
 
6
O
 
18
·2H
 
2
O
9.CJ.50Odintsovite
K
 
2
Na
 
4
Ca
 
3
Ti
 
2
Be
 
4
Si
 
12
O
 
38
9.CJ.55Mathewrogersite
Pb
 
7
(Fe
2+
 
,Cu)Al
 
3
Ge[(OH,H
 
2
O)
 
6
|(Si
 
3
O
 
9
)
 
4
]
9.CJ.60Pezzottaite
Cs(Be
 
2
Li)Al
 
2
Si
 
6
O
 
18
Other Names for Bazzite
Other Languages:
German:Bazzit
Russian:Баццит
Spanish:Bazzita
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 Bazzite
Reference List:American Mineralogist (1955): 40: 370.



American Mineralogist (1967): 52: 563-564.



Tschermaks Mineralogische und Petrographische Mitteilungen: 35: 410-421.



Canadian Mineralogist: 38: 1419-1424.



Gaines, Richard V., H. Catherine, W. Skinner, Eugene E. Foord, Brian Mason, Abraham Rosenzweig (1997), Dana's New Mineralogy : The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, 8th. edition: 1244.


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