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Calcioferrite Mineral Data

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General Calcioferrite Information

Help on Chemical  Formula: Chemical Formula: Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4•12(H2O)
Help on Composition: Composition: Molecular Weight = 1,233.18 gm
   Calcium     13.00 %  Ca   18.19 % CaO
   Magnesium    1.97 %  Mg    3.27 % MgO
   Aluminum     2.19 %  Al    4.13 % Al2O3
   Iron        13.59 %  Fe   19.42 % Fe2O3
   Phosphorus  15.07 %  P    34.53 % P2O5
   Hydrogen     2.29 %  H    20.45 % H2O
   Oxygen      51.90 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: •12(H2O)Ca4MgFe3+3Al(PO4)6(OH)4
Help on Environment: Environment: Found in a bed of Tertiary clay. The Fe-analog of montgomeryite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1858
Help on Locality: Locality: Battenberg, Bavaria, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition.
Help on Name Pronunciation: Name Pronunciation: Calcioferrite + Pronunciation Say CALCIOFERRITE

Calcioferrite Image

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Comments: Whitish green botryoidal crust of calcioferrite on matrix.
Location: Brugues, Barcelona, Catalunya, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calcioferrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4272:1:0.2607
Help on Cell Dimensions: Cell Dimensions: a = 10.34, b = 24.2, c = 6.31, Z = 2; beta = 91.5° V = 1,578.40 Den(Calc)= 2.59
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 12.1(1), 1.578(0.9), 2.59(0.9),2.65(0.9), 2.9(0.9), 3.15(0.7), 5.17(0.6), 6.05(0.6),

Physical Properties of Calcioferrite

Help on Cleavage: Cleavage: {???} Perfect, {???} Very Good
Help on Color: Color: Greenish yellow, Yellow, Yellow green, Yellowish white.
Help on Density: Density: 2.53
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Pearly
Help on Streak: Streak: yellowish white

Optical Properties of Calcioferrite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.076 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.097 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2232,KPDmeas= 0.2285,KC= 0.2472
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (-), a=1.572, b=1.579, g=1.583, bire=0.0110, 2V(Calc)=72, 2V(Meas)=75.

Calculated Properties of Calcioferrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.55 gm/cc
note: Specific Gravity of Calcioferrite =2.53 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0052792049
Boson Index = 0.9947207951
Help on Photoelectric: Photoelectric: PECalcioferrite = 6.39 barns/electron
U=PECalcioferrite x rElectron Density= 16.29 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Calcioferrite is Not Radioactive

Calcioferrite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.08)Montgomeryite group Montgomeryite Ca4MgAl4(PO4)6(OH)4•12(H2O) C 2/c 2/m Kingsmountite (Ca,Mn)4(Fe,Mn)Al4(PO4)6(OH)4•12(H2O) C 2 2 Calcioferrite Ca4Fe(Fe,Al)4(PO4)6(OH)4•12(H2O) C 2 2 Zodacite Ca4MnFe4(PO4)6(OH)4•12(H2O) C 2/c,Cc Mono Angastonite! CaMgAl2(PO4)2(OH)4?7H2O P1 1
Help on  Strunz Class: Strunz Class: 08.DH.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
08.DH.25 Calcioferrite Ca4Fe(Fe,Al)4(PO4)6(OH)4•12(H2O) C 2 2
08.DH.25 Kingsmountite (Ca,Mn)4(Fe,Mn)Al4(PO4)6(OH)4•12(H2O) C 2 2
08.DH.25 Montgomeryite Ca4MgAl4(PO4)6(OH)4•12(H2O) C 2/c 2/m
08.DH.25 Zodacite Ca4MnFe4(PO4)6(OH)4•12(H2O) C 2/c,Cc Mono

Other Calcioferrite Information

Help on References: References: NAME( Dana8) 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 Calcioferrite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 08.DH.25





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