Cavoite
A valid IMA mineral species
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About Cavoite
Formula:
CaV4+3O7
Colour:
Colorless to pale olive green-brown, green-grey
Lustre:
Vitreous, Silky
Specific Gravity:
3.51 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for its chemical composition, containing CAlcium, Vanadium and Oxygen.
Type Locality:
This page provides mineralogical data about Cavoite.
Unique Identifiers
Mindat ID:
26440
Long-form identifier:
mindat:1:1:26440:0
Similar Names
IMA Classification of Cavoite
Classification of Cavoite
4.HE.40
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Cvo | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Cavoite
Vitreous, Silky
Transparency:
Transparent
Colour:
Colorless to pale olive green-brown, green-grey
Streak:
White
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Density:
3.51 g/cm3 (Calculated)
Chemistry of Cavoite
Mindat Formula:
CaV4+3O7
Element Weights:
Elements listed:
Crystallography of Cavoite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 10.42 Å, b = 5.28 Å, c = 10.34 Å
Ratio:
a:b:c = 1.973 : 1 : 1.958
Unit Cell V:
568.2 ų
Z:
4
Twinning:
none
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0009473 | Cavoite | Bouloux J C, Galy J (1973) Les hypovanadates MV3O7 (M=Ca,Sr,Cd). Structure cristalline de CaV3O7 Acta Crystallographica B29 269-275 |  | 1973 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.16 Å | (Medium) |
| 3.45 Å | (Weak) |
| 3.00 Å | (Strong) |
| 2.88 Å | (Weak) |
| 1.85 Å | (Medium) |
| 1.56 Å | (Weak) |
Comments:
Gambatesa mine, Italy. Data from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47e : [Vanadates, chromates, manganates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Cavoite
General Appearance of Type Material:
Very rare radiated aggregates of strongly elongated prismatic to acicular crystals up to about 0.28 mm in length.
Place of Conservation of Type Material:
Type material is deposited in the collection of the Dipartimento per lo Studio del Territorio e delle sue Risorse (Dip.Te.Ris), Universita` di Genova, Italy.
Geological Setting of Type Material:
Metamorphosed manganese deposit.
Associated Minerals at Type Locality:
Synonyms of Cavoite
Other Language Names for Cavoite
Common Associates
Associations Based on Photo Data:
| 1 photo of Cavoite associated with Native Copper | Cu |
Related Minerals - Strunz-mindat Grouping
| 4.HE.05 | Melanovanadite | Ca(V5+,V4+)4O10 · 5H2O |
| 4.HE.10 | Shcherbinaite | V5+2O5 |
| 4.HE.15 | Hewettite | CaV6O16 · 9H2O |
| 4.HE.15 | Metahewettite | CaV6O16 · 3H2O |
| 4.HE.20 | Bariandite | Al0.6(V5+,V4+)8O20 · 9H2O |
| 4.HE.20 | Corvusite | (Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O |
| 4.HE.20 | Bokite | (Al,Fe)1.3(V5+,V4+,Fe3+)8O20 · 7.5H2O |
| 4.HE.20 | Fernandinite | (Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2O |
| 4.HE.20 | Straczekite | (Ca,K,Ba)(V5+,V4+)8O20 · 3H2O |
| 4.HE.25 | Häggite | V3+V4+O2(OH)3 |
| 4.HE.30 | Doloresite | V4+3O4(OH)4 |
| 4.HE.35 | Duttonite | V4+O(OH)2 |
Fluorescence of Cavoite
none
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.
Internet Links for Cavoite
mindat.org URL:
https://www.mindat.org/min-26440.html
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References for Cavoite
Reference List:
Mandarino, Joseph A. (2003) New minerals. The Canadian Mineralogist, 41 (5) 1309-1319 doi:10.2113/gscanmin.41.5.1309
Localities for Cavoite
Showing 9 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Australia | |
| Mineralogical Society of America - ... |
Brazil | |
| Mineralogical Society of America - ... |
Burundi | |
| Mineralogical Society of America - ... |
Germany | |
| Mineralogical Society of America - ... |
Italy (TL) | |
| Palenzona A. et al. (Liguria) +2 other references |
Kyrgyzstan | |
| Mineralogical Society of America - ... |
Mexico | |
| Mineralogical Society of America - ... |
Nigeria | |
| Mineralogical Society of America - ... |
Norway | |
| Mineralogical Society of America - ... |
Quick NavTopAbout CavoiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Gambatesa Mine, Reppia, Ne, Genoa, Liguria, Italy