Mineralogy Database

Fernandinite Mineral Data

Search Webmineral :

General Fernandinite Information

Help on Chemical  Formula: Chemical Formula: CaV8O20•4(H2O)
Help on Composition: Composition: Molecular Weight = 839.66 gm
   Calcium    4.77 %  Ca    6.68 % CaO
   Vanadium  48.54 %  V    86.64 % V2O5
   Hydrogen   0.96 %  H     8.58 % H2O
   Oxygen    45.73 %  O
            ______        ______ 
            100.00 %      101.91 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaV5+8O20•4(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1915
Help on Locality: Locality: Minasragra, Peru. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Eulagio E. Fernanadini, former owner of the Minasragra deposit.
Help on Name Pronunciation: Name Pronunciation: Fernandinite + Pronunciation Say FERNANDINITE
Help on Synonym: Synonym: ICSD 79139
  PDF 45-1362

Fernandinite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Greenish-yellow fernandinite coatings on sandstone.
Location: Deremo-Snyder Mine, Egnar, San Miguel County, Colorado. USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fernandinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.1964:1:3.0166
Help on Cell Dimensions: Cell Dimensions: a = 11.68, b = 3.654, c = 11.023, Z = 1; beta = 105° V = 454.42 Den(Calc)= 3.07
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.68(1), 1.84(0.8), 3.48(0.3),1.95(0.1), 2.55(0.1), 2.83(0.1), 3.55(0.1), 5.65(0.1),

Physical Properties of Fernandinite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Dark green.
Help on Density: Density: 2.78
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: dark green

Optical Properties of Fernandinite

Help on Optical Data: Optical Data: NCalc= 2.04 - from Gladstone-Dale relationship (KC = 0.3378) where Ncalc=Dcalc*KC+1
NCalc= 1.94 - from Gladstone-Dale relationship (KC = 0.3378) where Ncalc=Dmeas*KC+1

Calculated Properties of Fernandinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.95 gm/cc
note: Specific Gravity of Fernandinite =3.07 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0014987724
Boson Index = 0.9985012276
Help on Photoelectric: Photoelectric: PEFernandinite = 9.90 barns/electron
U=PEFernandinite x rElectron Density= 29.25 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fernandinite is Not Radioactive

Fernandinite Classification

Help on  Dana Class: Dana Class: (47)Vanadium Oxysalts
  (47.03.02)Straczekite Group Straczekite (Ca,K,Ba)(V5,V4)8O20•3H2O C 2/m 2/m Corvusite (Na,Ca,K)V8O20•4(H2O) C 2/m 2/m Fernandinite CaV8O20•4(H2O) C 2/m 2/m Bariandite Al0.6V8O20•9(H2O) C 2/c 2/m Bokite (Al,Fe)1.3(V,Fe)8O20•4.7(H2O) C 2/m 2/m Kazakhstanite Fe5V3V12O39(OH)9•9(H2O) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.HE.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HE -Phyllovanadates
04.HE.20 Bokite (Al,Fe)1.3(V,Fe)8O20•4.7(H2O) C 2/m 2/m
04.HE.20 Bariandite Al0.6V8O20•9(H2O) C 2/c 2/m
04.HE.20 Corvusite (Na,Ca,K)V8O20•4(H2O) C 2/m 2/m
04.HE.20 Fernandinite CaV8O20•4(H2O) C 2/m 2/m
04.HE.20 Straczekite (Ca,K,Ba)(V5,V4)8O20•3H2O C 2/m 2/m

Other Fernandinite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Fernandinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Fernandinite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Fernandinite :

Ask about Fernandinite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Fernandinite Specimen Label here :


Dana No: Strunz No: 04.HE.20





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.