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Canavesite

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Formula:
Mg2(HBO3)(CO3) · 5H2O
System:
Monoclinic
Name:
Named in 1978 by Giovanni Ferraris, Marinella Franchini-Angela, and Paolo Orlandini for the type locality, Vola Gera Tunnel, Brosso, Canavese District, Torino, Italy.
This page provides mineralogical data about Canavesite.

Classification of Canavesite

Approved 1977
6.H0.50

6 : BORATES
H : Unclassified borates
0 :
17.1.8.1

17 : COMPOUND CARBONATES
1 : Miscellaneous
10.4.1

10 : Borates with other anions
4 : Borates with carbonate
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First Recorded Occurrence of Canavesite

Year of Discovery:
1977

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°
Max Birefringence:
δ = 0.020
Image 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:
Mg2(HBO3)(CO3) · 5H2O
Essential elements:
All elements listed in formula:

Relationship of Canavesite to other Species

6.H0.10Braitschite-(Ce)(Ca,Na2)7(Ce,La)2B22O43 · 7H2O
6.H0.40EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2O
6.H0.55QilianshaniteNaHCO3 · H3BO3 · 2H2O
10.4.2CarboboriteCa2Mg[B(OH)4]2(CO3)2 · 4H2O
10.4.3BorcariteCa4Mg(B4O6(OH)6)(CO3)2
10.4.4SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2Cl
10.4.5Moydite-(Y)Y[B(OH)4](CO3)
10.4.6GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3

Other Names for Canavesite

Name in Other Languages:
German:Canavesit
Spanish:Canavesita

Other Information

Health Risks:
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

Localities for Canavesite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Mineral and/or Locality  
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