Uvite Mineral Data

Uvite Mineral Data
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General Uvite Information

Help on Chemical Formula: Chemical Formula: (Ca,Na)(Mg,Fe++)3Al5Mg(BO3)3Si6O18(OH,F)4
Help on Composition: Composition: Molecular Weight = 970.23 gm
   Sodium      0.59 %  Na    0.80 % Na2O
   Calcium     3.10 %  Ca    4.33 % CaO
   Magnesium   5.64 %  Mg    9.35 % MgO
   Aluminum   13.90 %  Al   26.27 % Al2O3
   Iron        4.32 %  Fe    5.55 % FeO
   Silicon    17.37 %  Si   37.16 % SiO2
   Boron       3.34 %  B    10.76 % B2O3
   Hydrogen    0.31 %  H     2.79 % H2O
   Oxygen     49.47 %  O
   Fluorine    1.96 %  F     1.96 % F
                -   %   F    -0.82 % -O=F2    
             ______        ______ 
             100.00 %       98.14 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.75Na0.25Mg2.25Fe2+0.75Al5(BO3)3Si6O18(OH)3F
Help on Environment: Environment: Pegmatitic and skarn rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1929 (Dana # Changed)
Help on Locality: Locality: Province Uva, Sri Lanka. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Uvite Say UVITE
Help on Synonym: Synonym: ICSD 74189
  PDF 29-342
  Tourmaline
  Uvite - (61.3.1.3)
 

Uvite Image

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Uvite

Comments: Reddish brown, prismatic uvite crystals.
Location: Brumado, Bahia, Brazil. Scale: 4.5 x 5.5 cm.
© Fabre Minerals

Uvite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.4527
Help on Cell Dimensions: Cell Dimensions: a = 15.973, c = 7.231, Z = 3; V = 1,597.73 Den(Calc)= 3.02
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.965(1), 2.577(0.9), 2.043(0.8),
Click Here for Large Uvite Structure Window Crystal Structure:

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MacDonald D J , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.849-858, The crystal chemistry of Si=Al substitution in tourmaline, Sample: T72

View Additional jPOWD Structure files for Uvite
[1] [2] [3] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Uvite

Help on Cleavage: Cleavage: {1011} Indistinct
Help on Color: Color: Yellowish brown, Brown, Blackish brown, Bluish black.
Help on Density: Density: 3.1 - 3.2, Average = 3.15
Help on Diaphaneity: Diaphaneity: Translucent to opaque
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
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: 7.5 - Garnet
Help on Luminescence: Luminescence: Fluorescent, Short UV=yellow.
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: light brown
 

Optical Properties of Uvite

Help on Dichroism (e): Dichroism (e): light brown.
Help on Dichroism (w): Dichroism (w): brown.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2185,KPDmeas= 0.2095,KC= 0.205
Ncalc = 1.62 - 1.66
Help on Optical Data: Optical Data: Uniaxial (-), e=1.65, w=1.67, bire=0.0200.
 

Calculated Properties of Uvite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Uvite =3.15 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEUvite = 2.92 barns/electron
U=PEUvite x rElectron Density= 9.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Uvite is Not Radioactive
 

Uvite Classification
Help on Dana Class: Dana Class: 61.03b.01.03 (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 Uvite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Collectors Book of Fluorescent Minerals;Dana8) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Uvite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - CalTech Mineral Spectroscopy
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - Franklin Minerals(Dunn)
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - MinMax(Deutsch)
15 - MinMax(English)
16 - Mineral and Gemstone Kingdom
17 - Mineralienatlas (Deutsch)
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - WWW-MINCRYST

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

Uvite

(Ca,Na)(Mg,Fe++)3Al5Mg(BO3)3Si6O18(OH,F)4
Dana No: 61.03b.01.03 Strunz No: 09.CK.05
Locality:

 

Notes: