Mineralogy Database

Warwickite Mineral Data

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General Warwickite Information

Help on Chemical  Formula: Chemical Formula: Mg(Ti,Fe+++,Al)(BO3)O
Help on Composition: Composition: Molecular Weight = 147.29 gm
   Magnesium  16.50 %  Mg   27.36 % MgO
   Titanium   19.50 %  Ti   32.54 % TiO2
   Aluminum    1.83 %  Al    3.46 % Al2O3
   Iron       11.37 %  Fe   16.26 % Fe2O3
   Boron       7.34 %  B    23.63 % B2O3
   Oxygen     43.45 %  O
             ______        ______ 
             100.00 %      103.26 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgTi0.6Fe3+0.3Al0.1(BO3)O
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1838
Help on Locality: Locality: Southwest of Edenville, in the town of Warwick, Orange Co., New York. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Warwickite + Pronunciation Say WARWICKITE
Help on Synonym: Synonym: ICSD 8130
  PDF 19-775

Warwickite Image

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  Warwickite   Chondrodite

Comments: Black crystalline warwickite with tan chondrodite in white marble.
Location: Amity, near Warwick, Orange County, New York, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Warwickite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9827:1:0.3296
Help on Cell Dimensions: Cell Dimensions: a = 9.197, b = 9.358, c = 3.085, Z = 4; V = 265.51 Den(Calc)= 3.68
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.58(1), 1.5(0.5), 1.6(0.5),

Physical Properties of Warwickite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Brown, Black.
Help on Density: Density: 3.36
Help on Diaphaneity: Diaphaneity: Transparent to Subtranslucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: bluish black

Optical Properties of Warwickite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.169 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.241 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2215,KPDmeas= 0.2426,KC= 0.2918
Ncalc = 1.98 - 2.07
Help on Optical Data: Optical Data: Biaxial (+), a=1.806, b=1.809, g=1.83, bire=0.0240

Calculated Properties of Warwickite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.25 gm/cc
note: Specific Gravity of Warwickite =3.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEWarwickite = 7.12 barns/electron
U=PEWarwickite x rElectron Density= 23.16 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Warwickite is Not Radioactive

Warwickite Classification

Help on  Dana Class: Dana Class: (24)Borates - Anhydrous
  (24.02)where (A)2 BO2 [XO3]
  (24.02.02)Dana Group Warwickite Mg(Ti,Fe,Al)(BO3)O Pnam 2/m 2/m 2/m Yuanfuliite (Mg,Fe)(Fe,Al,Mg,Ti,Fe)(BO3)O Pnam 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 06.AB.20 06 - BORATES
  06.A - Monoborates
  06.AB -BO3, with additional anions; 1(D) + OH, etc.
06.AB.20 Warwickite Mg(Ti,Fe,Al)(BO3)O Pnam 2/m 2/m 2/m
06.AB.20 Yuanfuliite (Mg,Fe)(Fe,Al,Mg,Ti,Fe)(BO3)O Pnam 2/m 2/m 2/m

Other Warwickite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Warwickite :
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: Strunz No: 06.AB.20





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