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Cassagnaite

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Formula:
(Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8
System:
Orthorhombic
Name:
After the type locality, the Cassagna Mine, Graveglia Valley, Ne, Genova Province, Liguria, Italy.
This page provides mineralogical data about Cassagnaite.

Classification of Cassagnaite

Approved 2007
9.BJ.65

9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
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Type Occurrence of Cassagnaite

Crystallography of Cassagnaite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Cell Parameters:
a = 6.066Å, b = 8.908Å, c = 18.995Å
Ratio:
a:b:c = 0.681 : 1 : 2.132
Unit Cell Volume:
V 1,026.41 ų (Calculated from Unit Cell)

Chemical Properties of Cassagnaite

Formula:
(Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8
Essential elements:
All elements listed in formula:

Relationship of Cassagnaite to other Species

9.BJ.05OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
9.BJ.10RosenhahniteHCa3[Si3O9(OH)]
9.BJ.15TrabzoniteCa4(Si3O9)(OH)2
9.BJ.20Thalénite-(Y)Y3Si3O10F
9.BJ.25TiragalloiteMn42+(HAsSi3O13)
9.BJ.30Medaite(Mn,Ca)6(V,As)Si5O18OH
9.BJ.35RuiziteCa2Mn23+[(OH)2|H2Si4O13] · 2H2O
9.BJ.40Ardennite-(As)Mn42+Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6
9.BJ.40Ardennite-(V)Mn42+Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6
9.BJ.45KilchoaniteCa6(SiO4)(Si3O10)
9.BJ.50KornerupineMg3Al6(Si,Al,B)5O21(OH)
9.BJ.50Prismatine(◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
9.BJ.55ZunyiteAl13Si5O20(OH,F)18Cl
9.BJ.60HubeiteCa2Mn2+Fe3+[HSi4O13] · 2H2O

Other Names for Cassagnaite

Name in Other Languages:
Simplified Chinese:羟硅钒铁钙石

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 Cassagnaite

Reference List:
Basso, R., Carbone, C., Palenzona, A. (2008): Cassagnaite, a new V-bearing silicate mineral from the Cassagna mine, northern Apennines, Italy. European Journal of Mineralogy, 20, 95-100.

Palenzona, A. & Martinelli, A. (2009): Cassagnaite una nuova specie vanadinifera dalla Val Graveglia, Genova. Rivista Mineralogica Italiana, 4/2009, 268-270.

Internet Links for Cassagnaite

Localities for Cassagnaite

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 (TL)
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
Basso, R., Carbone, C., Palenzona, A. (2008): Cassagnaite, a new V-bearing silicate mineral from the Cassagna mine, northern Apennines, Italy. European Journal of Mineralogy, 20, 95-100. Palenzona, A. & Martinelli, A. (2009): Cassagnaite una nuova specie vanadinifera dalla Val Graveglia, Genova. Rivista Mineralogica Italiana, 4/2009, 268-270.
Mineral and/or Locality  
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