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Matioliite Mineral Data

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General Matioliite Information

Help on Chemical  Formula: Chemical Formula: NaMgAl5(PO4)4(OH)6•2H2O
Help on Composition: Composition: Molecular Weight = 784.62 gm
   Sodium       2.75 %  Na    3.71 % Na2O
   Calcium      0.05 %  Ca    0.07 % CaO
   Magnesium    2.73 %  Mg    4.52 % MgO
   Manganese    0.07 %  Mn    0.09 % MnO
   Aluminum    16.64 %  Al   31.45 % Al2O3
   Iron         1.71 %  Fe    1.01 % FeO /  1.32 % Fe2O3
   Phosphorus  15.91 %  P    36.45 % P2O5
   Hydrogen     1.74 %  H    15.52 % H2O
   Oxygen      58.40 %  O
              ______        ______ 
              100.00 %       94.15 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.94Ca0.01Mg0.88Fe2+0.11Mn2+0.01Al4.84Fe3+0.13(PO4)4.032(OH)5.76�(H2O)
Help on Environment: Environment: Occurs as a secondary mineral in vugs from the Gentil mine granitic pegmatite. Dufrenite group. Magnesium analog of burangaite.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Gentil mine, Mendes Pimentel County, Minas Gerais, Brazil Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in honor of Paulo Anselmo Matioli (b.1975), mineral collector, founder, and curator of the Museu de Ci�ncias Naturais Jobas "Jose Bonif�cio de Andrada e Silva" Santos, SP, Bra zil.
Help on Synonym: Synonym: IMA2005-011

Matioliite Image

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Comments: fiberous, blueish, matioliite aggregate on quartz.
Location: Gentil mine, Mendes Pimentel, Minas Gerais, Brazil. Scale: See Image.
© American Mineralogist

Matioliite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =4.9682:1:2.6623
Help on Cell Dimensions: Cell Dimensions: a = 25.075, b = 5.047, c = 13.437, Z = 4; beta = 110.97° V = 1,587.87 Den(Calc)= 3.28
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.654(1), 4.862(0.62), 6.581(0.62),2.666(0.45), 3.027(0.4), 3.291(0.23),

Physical Properties of Matioliite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Blue, Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Matioliite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.089 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1886,KC= 0.2071
Ncalc = 1.68
Help on Optical Data: Optical Data: Biaxial (-), a=1.597, b=1.627, g=1.632, bire=0.0350, 2V(Calc)=42, 2V(Meas)=43. Dispersion r > v.

Calculated Properties of Matioliite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.29 gm/cc
note: Specific Gravity of Matioliite =3.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.003371735
Boson Index = 0.996628265
Help on Photoelectric: Photoelectric: PEMatioliite = 1.93 barns/electron
U=PEMatioliite x rElectron Density= 6.35 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Matioliite is Not Radioactive

Matioliite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.09)where (A)3 (XO4)2 Zq � x(H2O)
  (42.09.01)Burangaite Group Burangaite (Na,Ca)2(Fe,Mg)2Al10(PO4)8(OH,O)12•4(H2O) C 2/c 2/m Dufrenite FeFe4(PO4)3(OH)5•2(H2O) C 2/c 2/m Natrodufrenite Na(Fe,Fe)(Fe,Al)5(PO4)4(OH)6•2(H2O) C 2/c 2/m IMA2008-056! NaMnFe5(PO4)4(OH)6•2H2O C 2/c 2/m Matioliite! NaMgAl5(PO4)4(OH)6•2H2O C 2/c 2/m
Help on  Strunz Class: Strunz Class: 08.DK.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DK -With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
08.DK.15 Dufrenite FeFe4(PO4)3(OH)5•2(H2O) C 2/c 2/m
08.DK.15 Burangaite (Na,Ca)2(Fe,Mg)2Al10(PO4)8(OH,O)12•4(H2O) C 2/c 2/m
08.DK.15 Natrodufrenite Na(Fe,Fe)(Fe,Al)5(PO4)4(OH)6•2(H2O) C 2/c 2/m
08.DK.15 Matioliite! NaMgAl5(PO4)4(OH)6•2H2O C 2/c 2/m
08.DK.15 IMA2008-056! NaMnFe5(PO4)4(OH)6•2H2O C 2/c 2/m

Other Matioliite Information

Help on References: References: NAME( AmMin, v91, p1932) PHYS. PROP.(AmMin, v91, p1932) OPTIC PROP.(AmMin, v91, p1932)
Help on See Also: See Also: Links to other databases for Matioliite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 08.DK.15





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