Cattiite Mineral Data

Cattiite Mineral Data
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General Cattiite Information

Help on Chemical Formula: Chemical Formula: Mg3(PO4)2•22(H2O)
Help on Composition: Composition: Molecular Weight = 659.66 gm
   Magnesium   10.76 %  Mg   17.84 % MgO
   Iron         0.08 %  Fe    0.11 % FeO
   Phosphorus   9.44 %  P    21.63 % P2O5
   Hydrogen     6.74 %  H    60.22 % H2O
   Oxygen      72.98 %  O
              ______        ______ 
              100.00 %       99.79 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg2.92Fe2+0.01(PO4)2.01•22.05(H2O)
Help on Environment: Environment: Occurs in cavities in a dolomite carbonatite vein that cuts forsterite-magnetite ore.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Zhelezny Mine Kovdor massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Michele Catti, Professor of Physical Chemistry, University of Milano Bicocca, Italy.
Help on Synonym: Synonym: IMA2000-032
 

Cattiite Image

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Cattiite

Comments: Colorless cattiite grain fragment.
Location: Zheleznyi Fe Mine, Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Grain size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Cattiite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.001:1:2.3327
Help on Cell Dimensions: Cell Dimensions: a = 6.932, b = 6.925, c = 16.154, Z = 1; alpha = 82.21°, beta = 89.7°, gamma = 119.51° V = 668.62 Den(Calc)= 1.64
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.98(1)(002), 5.32(0.63)(003), 3.19(0.45)(114,005,212), 2.658(0.37)(006,022), 2.896(0.33)(202), 2.728(0.32)(115), 2.867(0.3)(222), 4.
Click Here for Large Cattiite Structure Window Crystal Structure:

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Catti M , Franchini-Angela M , Ivaldi G , Zeitschrift fur Kristallographie , 155 (1981) p.53-64, A case of polytypism in hydrated oxysalts:, the crystal structure of Mg3(PO4)2*22H2O-II, Locality: synthetic

 

Physical Properties of Cattiite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless.
Help on Density: Density: 1.65
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Cattiite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2843,KPDmeas= 0.2826,KC= 0.2802
Ncalc = 1.46
Help on Optical Data: Optical Data: Biaxial (-), a=1.459, b=1.47, g=1.47, bire=0.0110
 

Calculated Properties of Cattiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.75 gm/cc
note: Specific Gravity of Cattiite =1.65 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECattiite = 0.89 barns/electron
U=PECattiite x rElectron Density= 1.56 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cattiite is Not Radioactive
 

Cattiite Classification
Help on Dana Class: Dana Class: 40.03.12.02 (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 · x(H2O)
  (40.03.12)Dana Group
 
40.03.12.01 Phaunouxite Ca3(AsO4)•11(H2O) P1 1
 
40.03.12.02 Cattiite! Mg3(PO4)2•22(H2O) P1 1
Help on Strunz Class: Strunz Class: 08.CE.50 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CE -With only medium-sized cations, RO4:H2O £ 1:2.5
 
08.CE.50 Cattiite! Mg3(PO4)2•22(H2O) P1 1
 

Other Cattiite Information
Help on References: References: NAME( AmMin, 88:1175) PHYS. PROP.(AmMin, 88:1175) OPTIC PROP.(AmMin, 88:1175)
Help on See Also: See Also: Links to other databases for Cattiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (MinSocAm)
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

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Cattiite

Mg3(PO4)2•22(H2O)
Dana No: 40.03.12.02 Strunz No: 08.CE.50
Locality:

 

Notes: