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Cassagnaite

A valid IMA mineral species

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Photos of Cassagnaite (8)

Cassagnaite Gallery Search Photos of Cassagnaite

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Cassagnaite, etc.

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite, etc.

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite, etc.

Cassagna Mine, Ne, Genoa, Liguria, Italy

Cassagnaite

Cassagna Mine, Ne, Genoa, Liguria, Italy

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About CassagnaiteHide

Cassagna

Cassagna Mine, Ne, Genoa, Liguria, Italy

Formula:

(Ca,Mn²⁺)₄(Fe³⁺,Mn³⁺,Al)₄(V³⁺,Mg,Al)₂(Si₃O₁₀)(SiO₄)₂(OH,O)₈

Colour:

Golden brown

Lustre:

Vitreous

Specific Gravity:

3.22 (Calculated)

Crystal System:

Orthorhombic

Name:

Named by R. Basso, C. Carbone, and A. Palenzona in 2008 after the type locality, the Cassagna Mine, Graveglia Valley, Ne, Genova Province, Liguria, Italy.

Type Locality:

ⓘ Cassagna Mine, Ne, Genoa, Liguria, Italy

This page provides mineralogical data about Cassagnaite.

Unique IdentifiersHide

Mindat ID:

31591

Long-form identifier:

mindat:1:1:31591:7

GUID
(UUID V4):

e532e523-6053-4c65-b585-81a1d411ce59

IMA Classification of CassagnaiteHide

IMA status:

Approved

IMA Formula:

Ca₄Fe³⁺₄V³⁺₂(OH)₆O₂(Si₃O₁₀)(SiO₄)₂

Approval year:

2007

First published:

2008

Type description reference:

Basso, Riccardo, Carbone, Cristina, Palenzona, Andrea (2008) Cassagnaite, a new, V-bearing silicate mineral from the Cassagna mine, northern Apennines, Italy. European Journal of Mineralogy, 20 (1) 95-100 doi:10.1127/0935-1221/2007/0019-1777

Classification of CassagnaiteHide

Strunz-mindat (2024):

9.BJ.65

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Csg	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 CassagnaiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Golden brown

Streak:

Nearly white

Tenacity:

Brittle

Density:

3.22 g/cm³ (Calculated)

Chemistry of CassagnaiteHide

Mindat Formula:

(Ca,Mn²⁺)₄(Fe³⁺,Mn³⁺,Al)₄(V³⁺,Mg,Al)₂(Si₃O₁₀)(SiO₄)₂(OH,O)₈

Elements listed:

Al, Ca, Fe, H, Mg, Mn, O, Si, V - search for minerals with similar chemistry

Crystallography of CassagnaiteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Space Group:

Cmcm

Cell Parameters:

a = 6.066(1) Å, b = 8.908(1) Å, c = 18.995(2) Å

Ratio:

a:b:c = 0.681 : 1 : 2.132

Unit Cell V:

1,026.41 Å³ (Calculated from Unit Cell)

Morphology:

Prism {011} and the pinacoids {001} and {100}.

Crystal StructureHide

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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)
0007254	Cassagnaite	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		2008	Cassagna mine, northern Apennines, Liguria, Italy	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cassagnaite'
loop_
_publ_author_name
'Basso R'
'Carbone C'
'Palenzona A'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 20 
_journal_year 2008
_journal_page_first 95
_journal_page_last 100
_publ_section_title
;
 Cassagnaite, a new, V-bearing silicate mineral from the Cassagna mine,
 northern Apennines, Italy
;
_database_code_amcsd 0007254
_chemical_compound_source 'Cassagna mine, northern Apennines, Liguria, Italy'
_chemical_formula_sum 'Ca1.65 Mn1.05 Fe.8 Al.75 V.35 Mg.3 Si2.6 O13 H3'
_cell_length_a 6.066
_cell_length_b 8.908
_cell_length_c 18.995
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1026.412
_exptl_crystal_density_diffrn      3.222
_symmetry_space_group_name_H-M 'C m c m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,y,z'
  '1/2-x,1/2+y,z'
  'x,-y,-z'
  '1/2+x,1/2-y,-z'
  'x,y,1/2-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,1/2+z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ca   0.00000   0.68340   0.15710   0.82500   0.01343
Mn   0.00000   0.68340   0.15710   0.17500   0.01343
Fe3+M1   0.25000   0.25000   0.00000   0.40000   0.00570
Mn3+M1   0.25000   0.25000   0.00000   0.35000   0.00570
AlM1   0.25000   0.25000   0.00000   0.25000   0.00570
V3+M2   0.24480   0.44110   0.25000   0.17500   0.00291
MgM2   0.24480   0.44110   0.25000   0.15000   0.00291
AlM2   0.24480   0.44110   0.25000   0.12500   0.00291
Si1   0.00000   0.10660   0.25000   0.60000   0.00785
Si2   0.00000   0.02890   0.09480   1.00000   0.00507
O1   0.00000   0.95550   0.17960   1.00000   0.00418
O2   0.22800   0.18640   0.25000   1.00000   0.02660
O3   0.21660   0.11820   0.08080   1.00000   0.00684
O4   0.00000   0.86660   0.05400   1.00000   0.02444
O-H5   0.00000   0.36810   0.03260   1.00000   0.01153
O-H6   0.00000   0.42140   0.17990   0.50000   0.01267

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
9.52 Å	(100)
2.66 Å	(70)
2.54 Å	(65)
4.85 Å	(50)
4.98 Å	(45)
4.03 Å	(40)
2.32 Å	(40)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-𝑇 alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Type Occurrence of CassagnaiteHide

Type Locality:

ⓘ Cassagna Mine, Ne, Genoa, Liguria, Italy

General Appearance of Type Material:

Fracture fillings in braunite + quartz layered mineralizations. Very rare isolated prismatic to tabular crystals < 0.06 mm. A few crystal aggregates to 1 mm.

Place of Conservation of Type Material:

Dipartimento per lo Studio del Territorio e delle sue Risorse (Dip.Te.Ris), University of Genoa, Italy.

Geological Setting of Type Material:

Hydrothermal alteration of braunite-bearing layered mineralization and metacherts.

Associated Minerals at Type Locality:

Quartz

Piemontite

Braunite

Reference:

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.

Download:

https://rruff.info/rruff_1.0/uploads/EJM20_95.pdf

Synonyms of CassagnaiteHide

IMA2006-019a

Other Language Names for CassagnaiteHide

Simplified Chinese:羟硅钒铁钙石

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Cassagnaite associated with Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
1 photo of Cassagnaite associated with Quartz	SiO₂

Related Minerals - Strunz-mindat Grouping Hide

9.BJ.	Arsenmedaite	Mn²⁺₆ As⁵⁺Si₅O₁₈(OH)	Mon. 2/m
9.BJ.05	Orientite	Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀ · 4H₂O	Orth. mmm (2/m 2/m 2/m)
9.BJ.10	Rosenhahnite	HCa₃[Si₃O₉(OH)]	Tric. 1 : P1
9.BJ.15	Trabzonite	Ca₄(Si₃O₉)(OH)₂	Orth. mm2 : Ama2
9.BJ.20	Thalénite-(Y)	Y₃Si₃O₁₀F	Mon.
9.BJ.25	Tiragalloite	Mn²⁺₄As⁵⁺Si₃O₁₂(OH)	Mon. 2/m
9.BJ.30	Medaite	Mn²⁺₆V⁵⁺Si₅O₁₈(OH)	Mon. 2/m
9.BJ.35	Ruizite	Ca₂Mn³⁺₂[Si₄O₁₁(OH)₂](OH)₂ · 2H₂O	Mon. 2
9.BJ.35	Taniajacoite	SrCaMn³⁺₂Si₄O₁₁(OH)₄ · 2H₂O	Tric. 1
9.BJ.35	Strontioruizite	Sr₂Mn³⁺₂Si₄O₁₁(OH)₄ · 2H₂O	Mon. 2 : B2
9.BJ.40	Ardennite-(As)	Mn²⁺₄Al₄(AlMg)(AsO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆	Orth. mmm (2/m 2/m 2/m)
9.BJ.40	Ardennite-(V)	Mn²⁺₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆	Orth. mmm (2/m 2/m 2/m) : Pmmn
9.BJ.40	Kannanite	Ca₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆	Orth. mmm (2/m 2/m 2/m) : Pmmn
9.BJ.40	Alpeite	Ca₄Mn³⁺₂Al₂(Mn³⁺Mg)(SiO₄)₂(Si₃O₁₀)(V⁵⁺O₄)(OH)₆	Orth. mmm (2/m 2/m 2/m) : Pmmn
9.BJ.45	Kilchoanite	Ca₆(SiO₄)(Si₃O₁₀)	Orth. mmm (2/m 2/m 2/m)
9.BJ.50	Kornerupine	Mg₃Al₆(Si,Al,B)₅O₂₁(OH)	Orth. mmm (2/m 2/m 2/m) : Cmcm
9.BJ.50	Prismatine	(◻,Fe,Mg)(Mg,Al,Fe)₅Al₄Si₂(Si,Al)₂(B,Si,Al)(O,OH,F)₂₂	Orth. mmm (2/m 2/m 2/m) : Cmcm
9.BJ.55	Zunyite	Al₁₃Si₅O₂₀(OH,F)₁₈Cl	Iso. 4 3m : F4 3m
9.BJ.60	Hubeite	Ca₂Mn²⁺Fe³⁺Si₄O₁₂(OH) · 2H₂O	Tric. 1 : P1
9.BJ.70	Pavlovskyite	Ca₈(SiO₄)₂(Si₃O₁₀)	Orth. mmm (2/m 2/m 2/m) : Pbcn

Fluorescence of CassagnaiteHide

In UV light:

Not fluorescent

Other InformationHide

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 CassagnaiteHide

mindat.org URL:

https://www.mindat.org/min-31591.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for CassagnaiteHide

Reference List:

Piilonen, P.C., Poirier, G., Tait, K.T. (2008) New mineral names. American Mineralogist: 93: 1686-1691.

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

(2023) Cassagnaite. Handbook of Mineralogy. Mineralogical Society of America

Localities for CassagnaiteHide

This 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.

Locality ListHide

- 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). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Italy (TL)
Liguria Genoa Ne ⓘ Cassagna Mine (TL)	Basso et al. (2008) +1 other reference

Spain
Canary Islands Santa Cruz de Tenerife Province Tenerife ⓘ Los Humilladeros	Dill et al. (2023)

Cassagnaite

About CassagnaiteHide

Unique IdentifiersHide

IMA Classification of CassagnaiteHide

Classification of CassagnaiteHide

Mineral SymbolsHide

Physical Properties of CassagnaiteHide

Chemistry of CassagnaiteHide

Crystallography of CassagnaiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of CassagnaiteHide

Synonyms of CassagnaiteHide

Other Language Names for CassagnaiteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of CassagnaiteHide

Other InformationHide

Internet Links for CassagnaiteHide

References for CassagnaiteHide

Localities for CassagnaiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide