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Zodacite Mineral Data

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General Zodacite Information

Help on Chemical  Formula: Chemical Formula: Ca4Mn++Fe+++4(PO4)6(OH)4•12(H2O)
Help on Composition: Composition: Molecular Weight = 1,292.68 gm
   Calcium     12.40 %  Ca   17.35 % CaO
   Manganese    4.25 %  Mn    5.49 % MnO
   Iron        17.28 %  Fe   24.71 % Fe2O3
   Phosphorus  14.38 %  P    32.94 % P2O5
   Hydrogen     2.18 %  H    19.51 % H2O
   Oxygen      49.51 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Mn2+Fe3+4(PO4)6(OH)4•12(H2O)
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Mangualde pegmatite, Beira, Portugal. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Peter Zodac (1894-1967), founder and editor of Rocks and Minerals.
Help on Name Pronunciation: Name Pronunciation: Zodacite Say ZODACITE

Zodacite Image

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Comments: SEM image of a divergent spray of zodacite crystals. (AmMin, v73:1179).
Location: Mangualde, Portugal. Scale: See Image.
© American Mineralogist

Zodacite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4205:1:0.2613
Help on Cell Dimensions: Cell Dimensions: a = 10.152, b = 24.14, c = 6.308, Z = 2; beta = 91.14° V = 1,545.59 Den(Calc)= 2.78
Help on Crystal System: Crystal System: Monoclinic Space Group: C 2/c,Cc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.18(1), 12(0.6), 2.907(0.5),

Physical Properties of Zodacite

Help on Cleavage: Cleavage: {010} Good
Help on Color: Color: Light yellow, Medium yellow, Colorless.
Help on Density: Density: 2.68
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white

Optical Properties of Zodacite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.11 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.142 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2159,KPDmeas= 0.224,KC= 0.2517
Ncalc = 1.67 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.598, b=1.601, g=1.602, bire=0.0040, 2V(Calc)=58, 2V(Meas)=83.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): very pale green.
Help on Pleochroism (z): Pleochroism (z): pale green.

Calculated Properties of Zodacite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.68 gm/cc
note: Specific Gravity of Zodacite =2.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0040719072
Boson Index = 0.9959280928
Help on Photoelectric: Photoelectric: PEZodacite = 8.34 barns/electron
U=PEZodacite x rElectron Density= 22.37 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zodacite is Not Radioactive

Zodacite 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 Zodacite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.73,p1179-1181,1988) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Zodacite :
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: 08.DH.25





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