Mineralogy Database

Feruvite Mineral Data

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General Feruvite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4
Help on Composition: Composition: Molecular Weight = 1,047.92 gm
   Sodium      0.55 %  Na    0.74 % Na2O
   Calcium     2.87 %  Ca    4.01 % CaO
   Magnesium   6.26 %  Mg   10.38 % MgO
   Titanium    1.37 %  Ti    2.29 % TiO2
   Aluminum    9.27 %  Al   17.51 % Al2O3
   Iron       12.79 %  Fe   16.45 % FeO
   Silicon    16.08 %  Si   34.40 % SiO2
   Boron       3.09 %  B     9.97 % B2O3
   Hydrogen    0.38 %  H     3.44 % H2O
   Oxygen     47.33 %  O
             ______        ______ 
             100.00 %       99.20 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.75Na0.25Fe2+2.4Mg2.7Ti0.3Al3.6(BO3)3Si6O18(OH)4
Help on Environment: Environment: Hydrothermally altered pegmatitic quartz veins.
Help on IMA Status: IMA Status: Approved IMA 1989 (Dana # Changed)
Help on Locality: Locality: Cuvier Island, New Zealand. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the iron content and relationship to uvite.
Help on Name Pronunciation: Name Pronunciation: Feruvite Say FERUVITE
Help on Synonym: Synonym: Feruvite - (
  ICSD 203073
  PDF 46-1385

Feruvite Image

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Comments: BSE image of a typical zoned feruvite-dravite crystal in quartz. The lighter gray core is feruvite (F), and the darker rim and overgrowths consist of dravite (D). The white grains are chlorapatite..
Location: Tourmalinized rock at Cuvier Island, New Zealand. (CanMin, v27:199). Scale: Scale Bar 100 µm.
© Canadian Mineralogist

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Comments: Dark green grains of feruvite in matrix.
Location: Red Cross Lake, Manitoba, Canada. Scale: See Image.
© Rruff Database

Feruvite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.45247
Help on Cell Dimensions: Cell Dimensions: a = 16.012, c = 7.245, Z = 3; V = 1,608.65 Den(Calc)= 3.24
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.586(1), 2.979(0.8), 4.24(0.6),

Physical Properties of Feruvite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brownish black, Dark brown, Black.
Help on Density: Density: 3.207
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 7 - Quartz
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: gray

Optical Properties of Feruvite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2093,KPDmeas= 0.2114,KC= 0.2114
Ncalc = 1.68 - 1.69
Help on Optical Data: Optical Data: Uniaxial (-), e=1.669, w=1.687, bire=0.0180.

Calculated Properties of Feruvite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.16 gm/cc
note: Specific Gravity of Feruvite =3.21 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEFeruvite = 5.43 barns/electron
U=PEFeruvite x rElectron Density= 17.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Feruvite is Not Radioactive

Feruvite Classification

Help on  Dana Class: Dana Class: 61.03b.01.04 (61)Cyclosilicate Six-Membered Rings
  (61.03b)with borate groups (Calcic Tourmaline Subgroup)
  (61.03b.01)Liddicoatite Subgroup
61.03b.01.02 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m
61.03b.01.03 Uvite! (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m
61.03b.01.04 Feruvite! (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
61.03b.01.05 Hydroxyuvite! CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) R 3m 3m
Help on  Strunz Class: Strunz Class: 09.CK.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CK -[Si6O18]12- 6-membered single rings, with insular complex anions
09.CK.05 Chromdravite! NaMg3(Cr,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
09.CK.05 Feruvite! (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
09.CK.05 Dravite NaMg3Al6(BO3)3Si6O18(OH)4 R 3m 3m
09.CK.05 Buergerite! NaFe3Al6(BO3)3Si6O21F R 3m 3m
09.CK.05 Foitite! []Na<0.5(Fe,Al)3Al6Si6O18(BO3)3(OH)4 R 3m 3m
09.CK.05 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m
09.CK.05 Elbaite Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 R 3m 3m
09.CK.05 Rossmanite! []LiAl2Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
09.CK.05 Olenite! NaAl3Al6(BO3)3(Si6O18)(O,OH)4 R 3m 3m
09.CK.05 Povondraite! (Na,K)(Fe,Fe)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 R 3m 3m
09.CK.05 Schorl NaFe3Al6(BO3)3Si6O18(OH)4 R 3m 3m
09.CK.05 Uvite (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m
09.CK.05 Vanadiumdravite! NaMg3V6(Si6O18)(BO3)3(OH)4 R 3m 3m
09.CK.05 Magnesiofoitite! [](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
09.CK.05 Hydroxyuvite! CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) R 3m 3m
09.CK.05 Schorl-(F)! NaFe3Al6Si6O18)(BO3)3(OH)3(F,OH) R 3m 3m

Other Feruvite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p707,1990) OPTIC PROP.(Am.Min.,Vol.75,p707,1990)
Help on See Also: See Also: Links to other databases for Feruvite :
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

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Dana No: 61.03b.01.04 Strunz No: 09.CK.05





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