Feruvite Mineral Data

General Feruvite Information

Chemical Formula: (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 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 Empirical Formula: Ca_0.75Na_0.25Fe²⁺_2.4Mg_2.7Ti_0.3Al_3.6(BO₃)₃Si₆O₁₈(OH)₄ Environment: Hydrothermally altered pegmatitic quartz veins. IMA Status: Approved IMA 1989 (Dana # Changed) Locality: Cuvier Island, New Zealand. Link to MinDat.org Location Data. Name Origin: Named for the iron content and relationship to uvite. Name Pronunciation: Feruvite Synonym: Feruvite - (61.3.1.4)   ICSD 203073   PDF 46-1385   Tourmaline  

Feruvite Image

Images:

Feruvite 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

Images:

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

Feruvite Crystallography

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

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Grice J D , Robinson G W , The Canadian Mineralogist , 27 (1989) p.199-203, Feruvite, a new member of the tourmaline group, and its crystal structure

 

Physical Properties of Feruvite

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

Optical Properties of Feruvite

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 Optical Data: Uniaxial (-), e=1.669, w=1.687, bire=0.0180.  

Calculated Properties of Feruvite

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

Feruvite Classification

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

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

References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p707,1990) OPTIC PROP.(Am.Min.,Vol.75,p707,1990) 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
15 - WWW-MINCRYST
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Feruvite :

A Bijoux Google Search for Feruvite
Adam's Minerals Google Search for Feruvite
Cape Minerals Google Search for Feruvite
Dakota Matrix Minerals Google Search for Feruvite
Excalibur Mineral Corp. Google Search for Feruvite
Exceptional Minerals Google Search for Feruvite
John Betts Fine Minerals Search for Feruvite
McDougall Minerals Google Search for Feruvite
Mineral News Website Link
Rock and Mineral Shows Google Search for Feruvite
Weinrich Minerals, Inc. Google Search for Feruvite

Ask about Feruvite 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 Español

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