Mineralogy Database

Matveevite Mineral Data

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General Matveevite Information

Help on Chemical  Formula: Chemical Formula: KTiMn2Fe+++2(PO4)4(OH)3•15(H2O)
Help on Composition: Composition: Molecular Weight = 1,009.69 gm
   Potassium    3.87 %  K     4.66 % K2O
   Titanium     4.74 %  Ti    7.91 % TiO2
   Manganese   10.88 %  Mn   14.05 % MnO
   Iron        11.06 %  Fe   15.82 % Fe2O3
   Phosphorus  12.27 %  P    28.12 % P2O5
   Hydrogen     3.29 %  H    29.44 % H2O
   Oxygen      53.88 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KTiMn2+2Fe3+2(PO4)4(OH)3•15(H2O)
Help on Environment: Environment: The Mn end member in the series with paulkerrite. Decomposition product in granitic pegmatite. Matveevite (1991) discredited as equivalent to Mg-Al-bearing benyacarite.
Help on IMA Status: IMA Status: Discredited IMA 2006 - Approved IMA 1991
Help on Locality: Locality: Ilmenskih National Park, Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1986 for K. K. Matveev (1875-1954).
 

Matveevite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6052:1:0.5126
Help on Cell Dimensions: Cell Dimensions: a = 12.42, b = 20.52, c = 10.52, Z = 4; V = 2,681.11 Den(Calc)= 2.50
Help on Crystal System: Crystal System: Orthorhombic Space Group: Pnam ro P na21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.23(1), 3.15(0.9), 10.4(0.9),7.5(0.8), 2.86(0.4),
 

Physical Properties of Matveevite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Colorless, White, Yellowish white.
Help on Density: Density: 2.32
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Matveevite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.055 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.123 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2363,KPDmeas= 0.2546,KC= 0.2693
Ncalc = 1.62 - 1.67
Help on Optical Data: Optical Data: Biaxial (+), a=1.574, b=1.58, g=1.618, bire=0.0440
 

Calculated Properties of Matveevite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.33 gm/cc
note: Specific Gravity of Matveevite =2.32 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0087448932
Boson Index = 0.9912551068
Help on Photoelectric: Photoelectric: PEMatveevite = 7.69 barns/electron
U=PEMatveevite x relectron= 17.94 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 56.21 (Gamma Ray American Petroleum Institute Units)
Concentration of Matveevite per GRapi unit = 1.78 (%)

Estimated Radioactivity from Matveevite - barely detectable

 

Matveevite Classification

Help on  Dana Class: Dana Class: 42.11.21.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.21)Paulkerrite Group
 
42.11.21.01 Paulkerrite K(Mg,Mn)2(Fe,Al)2Ti(PO4)4(OH)3•15(H2O) P bca 2/m 2/m 2/m
 
42.11.21.02 Mantienneite KMg2Al2Ti(PO4)4(OH)3•15(H2O) P bca 2/m 2/m 2/m
 
42.11.21.03 Matveevite? KTiMn2Fe2(PO4)4(OH)3•15(H2O) Pnam ro P na21 Ortho
 
42.11.21.04 Benyacarite (H2O,K)2Ti(Mn,Fe)2(Fe,Ti)2Ti(PO4)4(O,F)2•14(H2O) P bca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.DH.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
 
08.DH.35 Benyacarite (H2O,K)2Ti(Mn,Fe)2(Fe,Ti)2Ti(PO4)4(O,F)2•14(H2O) P bca 2/m 2/m 2/m
 
08.DH.35 Matveevite? KTiMn2Fe2(PO4)4(OH)3•15(H2O) Pnam ro P na21 Ortho
 
08.DH.35 Mantienneite KMg2Al2Ti(PO4)4(OH)3•15(H2O) P bca 2/m 2/m 2/m
 
08.DH.35 Paulkerrite K(Mg,Mn)2(Fe,Al)2Ti(PO4)4(OH)3•15(H2O) P bca 2/m 2/m 2/m
 

Other Matveevite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Matveevite :
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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Print or Cut-and-Paste your Matveevite Specimen Label here :

Matveevite

KTiMn2Fe+++2(PO4)4(OH)3•15(H2O)
Dana No: 42.11.21.03 Strunz No: 08.DH.35
Locality:

 

Notes:

 

 
   
 


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