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Fianelite

A valid IMA mineral species
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About FianeliteHide

Formula:
Mn2+2((V,As)2O7) · 2H2O
Colour:
Red-orange
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.21
Crystal System:
Monoclinic
Name:
Named after its locality.
Loosely related to mesaite. The V analogue of rüdlingerite.


Unique IdentifiersHide

Mindat ID:
6946
Long-form identifier:
mindat:1:1:6946:1
GUID
(UUID V4):
11b59d45-5766-4fe6-9bc5-3d2c872c3eec

IMA Classification of FianeliteHide

Classification of FianeliteHide

8.FC.05

8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
FnlIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
FnlThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of FianeliteHide

Vitreous
Transparency:
Transparent
Colour:
Red-orange
Streak:
orange
Hardness:
Hardness:
VHN15=84 - 89 kg/mm2 - Vickers
Cleavage:
Distinct/Good
Parallel {001}(?) and {100}(?), good.
Density:
3.21(1) g/cm3 (Measured)    3.217(2) g/cm3 (Calculated)

Optical Data of FianeliteHide

Type:
Biaxial
RI values:
nα = 1.820 nβ = 1.820
2V:
Measured: 5° to 10°
Max Birefringence:
δ = 1.820
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
small
Pleochroism:
Strong
Comments:
yellow to red on {010} (?).

Chemistry of FianeliteHide

Mindat Formula:
Mn2+2((V,As)2O7) · 2H2O

Crystallography of FianeliteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.809(2) Å, b = 14.554(4) Å, c = 6.705(4) Å
β = 93.27(3)°
Ratio:
a:b:c = 0.537 : 1 : 0.461
Unit Cell V:
760.80 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space Group: P21/n.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001837FianeliteBrugger J, Berlepsch P (1996) Description and crystal structure of fianelite, Mn2V(V,As)O7.2H2O, a new mineral from Fianel, Val Ferrera, Graubunden, Switzerland American Mineralogist 81 1270-127619960293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.039 Å(100)
5.32 Å(80)
2.721 Å(60)
1.593 Å(60)
3.436 Å(50)
3.259 Å(50)
2.573 Å(50)

Geological EnvironmentHide

Type Occurrence of FianeliteHide

Place of Conservation of Type Material:
Natural History Museum, Basel, Switzerland
Geological Setting of Type Material:
veinlets in metamorphosed Fe–Mn ores
Associated Minerals at Type Locality:
Reference:
Brugger, J. & Berlepsch, P. (1996): Description and crystal structure of fianelite, Mn2V(V,As)O7.2H2O, a new mineral from Fianel, Val Ferrera, Graubünden, Switzerland. American Mineralogist: 81: 1270-1276.

Synonyms of FianeliteHide

Other Language Names for FianeliteHide

German:Fianelit
Simplified Chinese:费水钒锰矿
Spanish:Fianelita
Traditional Chinese:費水釩錳礦

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Fianelite associated with AnsermetiteMn2+(V2O6) · 4H2O

Related Minerals - Strunz-mindat GroupingHide

8.FC.XHylbrowniteNa3Mg(P3O10) · 12H2O Mon. 2/m
8.FC.DonowensiteCa(H2O)3Fe3+2(V2O7)2Tric. 1 : P1
8.FC.05RüdlingeriteMn2+2V5+As5+O7 · 2H2OMon.
8.FC.10CanaphiteNa2Ca(P2O7) · 4H2OMon. m : Pb
8.FC.15PintadoiteCa2(V2O7) · 9H2O
8.FC.20Arnhemite(K,Na)4Mg2(P2O7)2 · 5H2OHex.
8.FC.25WooldridgeiteNa2CaCu2+2(P2O7)2 · 10H2OOrth. mm2 : Fdd2
8.FC.30KanoneroviteNa3Mn2+(P3O10) · 12H2OMon. 2/m
8.FC.35MesaiteCaMn2+5(V2O7)3 · 12H2OMon. 2/m : P2/b

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 FianeliteHide

References for FianeliteHide

Localities for FianeliteHide

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
 
  • Piedmont
    • Cuneo Province
      • Canosio
        • Vallone della Valletta
Cámara et al. (2017)
Japan
 
  • Saitama Prefecture
    • Hanno City
Yamada et al (2000)
Switzerland (TL)
 
  • Grisons
    • Viamala Region
      • Ferrera
        • Ausserferrera
Brugger et al. (1996)
 
矿物 and/or 产地  
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