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Canavesite

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Big Photo

Brosso Mine, Cálea, Léssolo, Canavese District, Torino Province, Piedmont, Italy
© Thomas Witzke

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Formula:
Mg
 
2
(HBO
 
3
)(CO
 
3
) · 5H
 
2
O
System:Monoclinic
Name:Named for the type locality, a mine in the Canavese district, Italy.
This page provides mineralogical data about Canavesite.

Classification of Canavesite

IMA status:Approved 1977
Strunz 8th edition ID:5/G.06-40
Nickel-Strunz 10th (pending) edition ID:6.H0.50

6 : BORATES
H : Unclassified borates
0 :
Dana 8th edition ID:17.1.8.1

17 : COMPOUND CARBONATES
1 : Miscellaneous
Hey's CIM Ref.:10.4.1

10 : Borates with other anions
4 : Borates with carbonate
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Type Occurrence of Canavesite

Type Locality:Brosso Mine, Cálea, Léssolo, Canavese District, Torino Province, Piedmont, Italy
Year of Discovery:1978

Crystallography of Canavesite

Crystal System:Monoclinic
Cell Parameters:a = 23.49Å, b = 6.16Å, c = 21.91Å
β = 114.91°
Ratio:a:b:c = 3.813 : 1 : 3.557
Unit Cell Volume:V 2,875.41 ų (Calculated from Unit Cell)

Optical Data of Canavesite

Type:Biaxial (+)
RI values: nα = 1.485 nβ = 1.494 nγ = 1.505
2V:Calculated: 86°
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Canavesite

Formula:
Mg
 
2
(HBO
 
3
)(CO
 
3
) · 5H
 
2
O
Essential elements:B, C, H, Mg, O
All elements listed in formula:B, C, H, Mg, O

Relationship of Canavesite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.H0.10Braitschite-(Ce)
(Ca,Na
 
2
)
 
7
(Ce,La)
 
2
B
 
22
O
 
43
 · 7H
 
2
O
6.H0.40Ekaterinite
Ca
 
2
(B
 
4
O
 
7
)(Cl,OH)
 
2
 · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
10.4.2Carboborite
Ca
 
2
Mg[B(OH)
 
4
]
 
2
(CO
 
3
)
 
2
 · 4H
 
2
O
10.4.3Borcarite
Ca
 
4
Mg(B
 
4
O
 
6
(OH)
 
6
)(CO
 
3
)
 
2
10.4.4Sakhaite
Ca
 
12
Mg
 
4
(BO
 
3
)
 
7
(CO
 
3
)
 
4
(OH)
 
2
Cl
10.4.5Moydite-(Y)
Y[B(OH)
 
4
](CO
 
3
)
10.4.6Gaudefroyite
Ca
 
4
Mn
3+
2-3
(BO
 
3
)
 
3
(CO
 
3
)(O,OH)
 
3

Other Names for Canavesite

Synonyms:
IMA1977-025
Other Languages:
German:Canavesit
Spanish:Canavesita

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 Canavesite

Reference List:

- +
American Mineralogist: 64: 652-653.

Canadian Mineralogist (1978): 16: 69-73.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Canavesite

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  • Raman and XRD data at RRUFF project
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    • Localities for Canavesite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (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
     
    • Piedmont
      • Torino Province
        • Canavese District
          • Léssolo
            • Cálea
    		G. Signorelli; Can.Min.(1978) 16, 69-73
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Ogdensburg
            • Sterling Hill
    		Dunn(1995):Pt4:619-620.
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