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Foggite Mineral Data

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General Foggite Information

Help on Chemical  Formula: Chemical Formula: CaAl(PO4)(OH)2•(H2O)
Help on Composition: Composition: Molecular Weight = 214.06 gm
   Calcium     18.72 %  Ca   26.20 % CaO
   Aluminum    12.60 %  Al   23.82 % Al2O3
   Phosphorus  14.47 %  P    33.16 % P2O5
   Hydrogen     1.88 %  H    16.83 % H2O
   Oxygen      52.32 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaAl(PO4)(OH)2•(H2O)
Help on Environment: Environment: Secondary mineral, probably formed at < 300 deg. C in complex granite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1975
Help on Locality: Locality: Palermo #1 mine, near North Groton, Grafton County, New Hamshire, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Forrest. F. Fogg (1920-), mineral collector, New Hampshire, USA.
Help on Name Pronunciation: Name Pronunciation: Foggite Say FOGGITE
Help on Synonym: Synonym: ICSD 4261
  PDF 29-282

Foggite Image

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Comments: Bright yellow, rounded crystalline aggregates of foggite on matrix.
Location: Palermo #1 mine, North Groton, Crafton County, New Hampshire, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Foggite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4347:1:0.2433
Help on Cell Dimensions: Cell Dimensions: a = 9.27, b = 21.324, c = 5.19, Z = 8; V = 1,025.93 Den(Calc)= 2.77
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: A2122
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.24(1), 2.693(0.8), 3.109(0.7),

Physical Properties of Foggite

Help on Cleavage: Cleavage: {010} Perfect, {100} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.78
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4 - Fluorite
Help on Streak: Streak: white

Optical Properties of Foggite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2203,KPDmeas= 0.2195,KC= 0.2222
Ncalc = 1.62
Help on Optical Data: Optical Data: Biaxial (+), a=1.61, b=1.61, g=1.611, bire=0.0010, 2V(Calc)=0, 2V(Meas)=40-45.

Calculated Properties of Foggite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.80 gm/cc
note: Specific Gravity of Foggite =2.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0005067159
Boson Index = 0.9994932841
Help on Photoelectric: Photoelectric: PEFoggite = 3.37 barns/electron
U=PEFoggite x rElectron Density= 9.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Foggite is Not Radioactive

Foggite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.02)Foggite Group Foggite CaAl(PO4)(OH)2•(H2O) A2122 2 2 2 Krasnovite! Ba(Al,Mg)(PO4,CO3)(OH)2•(H2O) Pnna,Pnnn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.DL.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1
08.DL.05 Foggite CaAl(PO4)(OH)2•(H2O) A2122 2 2 2

Other Foggite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Foggite :
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.DL.05





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