Feruvite Mineral Data

Feruvite Mineral Data +

[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com]
Dan Weinrich Auctions
Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens
The Place To Find Great Specimens At Great Prices!

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.

Synonym:

Feruvite - (61.3.1.4)

ICSD 203073

PDF 46-1385

Tourmaline

Search for Feruvite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

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

$Help on X Ray Diffraction:$ 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

Diaphaniety:

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

Optical Data:

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

Calculated Properties of Feruvite

Electron Density:

r_electron=3.16 gm/cc
note: r_Feruvite=3.21 gm/cc.

Fermion Index

Fermion Index = 0.02468
Boson Index = 0.97532

Photoelectric:

PE_Feruvite= 5.43 barns/electron
U=PE_Feruvite x r_electron= 17.19 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Feruvite is Not Radioactive

Feruvite Classification

Dana Class:

61.3b.1.4 (61)Cyclosilicate Six-Membered Rings

(61.3b)with borate groups (Calcic Tourmaline Subgroup)

(61.3b.1)Dana Group

61.3b.1.2 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m

61.3b.1.3 Uvite! (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m

61.3b.1.4 Feruvite ! (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m

61.3b.1.5 IMA2000-030! CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) R 3m 3m

Strunz Class:

VIII/E.19-100 VIII - Silicates

VIII/E - Cyklosilicates, six rings [Si6O18]12-

VIII/E.19 - Tourmaline group

VIII/E.19-05 Rossmanite! []LiAl2Al6(Si6O18)(BO3)3(OH)4 R 3m 3m

VIII/E.19-10 Elbaite Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-15 Magnesiofoitite! [](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 R 3m 3m

VIII/E.19-20 Dravite NaMg3Al6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-30 Chromdravite! NaMg3(Cr,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-35 Vanadiumdravite! NaMg3V6(Si6O18)(BO3)3(OH)4 R 3m 3m

VIII/E.19-50 Schorl NaFe3Al6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-55 Foitite! []Na<0.5(Fe,Al)3Al6Si6O18(BO3)3(OH)4 R 3m 3m

VIII/E.19-60 Olenite! NaAl3Al6(BO3)3(Si6O18)(O,OH)4 R 3m 3m

VIII/E.19-70 Buergerite! NaFe3Al6(BO3)3Si6O21F R 3m 3m

VIII/E.19-75 Povondraite! (Na,K)(Fe,Fe)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 R 3m 3m

VIII/E.19-80 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m

VIII/E.19-90 Uvite (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m

VIII/E.19-100 Feruvite (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 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)

Search for Feruvite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Feruvite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Feruvite Mineral Data :

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 :

Feruvite

(Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4
Dana No: 61.3b.1.4 Strunz No: VIII/E.19-100
Locality:

Notes: