Haigerachite Mineral Data

Haigerachite Mineral Data
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General Haigerachite Information

Help on Chemical Formula: Chemical Formula: KFe+++3(H2PO4)6(HPO4)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 1,052.58 gm
   Potassium    3.71 %  K     4.47 % K2O
   Iron        15.92 %  Fe   22.76 % Fe2O3
   Phosphorus  23.54 %  P    53.94 % P2O5
   Hydrogen     2.11 %  H    18.83 % H2O
   Oxygen      54.72 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KFe3+3H14(PO4)8•4(H2O)
Help on Environment: Environment: Secondary mineral formed in the dump material of the mine.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Silberbrunnle mine dump near Gengenbach in the central Black Forest, Aufschluss, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the village and valley near the locality.
Help on Synonym: Synonym: IMA1997-049
 

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Haigerachite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.7674:1:1.8321
Help on Cell Dimensions: Cell Dimensions: a = 16.95, b = 9.59, c = 17.57, Z = 4; beta = 90.85° V = 2,855.70 Den(Calc)= 2.45
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.83(1), 3.75(1), 3.02(0.9),3.25(0.5), 3.11(0.4), 3.3(0.4), 7.6(0.4),
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Forms: ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Haigerachite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: White.
Help on Density: Density: 2.44
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Habit: Habit: Scaly - Morphology like fish scales.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Haigerachite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.239,KPDmeas= 0.24,KC= 0.2432
Ncalc = 1.59 - 1.6
Help on Optical Data: Optical Data: Biaxial (-), a=1.557, b=1.598, g=1.602, bire=0.0450
 

Calculated Properties of Haigerachite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.44 gm/cc
note: Specific Gravity of Haigerachite =2.44 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.003644709
Boson Index = 0.996355291
Help on Photoelectric: Photoelectric: PEHaigerachite = 6.17 barns/electron
U=PEHaigerachite x relectron= 15.09 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 53.64 (Gamma Ray American Petroleum Institute Units)
Concentration of Haigerachite per GRapi unit = 1.86 (%)

Estimated Radioactivity from Haigerachite - barely detectable

 

Haigerachite Classification
Help on Dana Class: Dana Class: 39.03.10.01 (39)Hydrated Acid Phosphates, etc
  (39.03)with miscellaneous formulae
  (39.03.10)Dana Group
 
39.03.10.01 Haigerachite! KFe3(H2PO4)6(HPO4)2•4(H2O) C 2/c 2/m
Help on Strunz Class: Strunz Class: 08.CF.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CF -With large and medium-sized cations, RO4:H2O > 1:1
 
08.CF.10 Haigerachite! KFe3(H2PO4)6(HPO4)2•4(H2O) C 2/c 2/m
 

Other Haigerachite Information
Help on References: References: NAME( AmMin, V 85, p263) PHYS. PROP.(AmMin, V 85, p263) OPTIC PROP.(AmMin, V85, p263)
Help on See Also: See Also: Links to other databases for Haigerachite :
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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Haigerachite

KFe+++3(H2PO4)6(HPO4)2•4(H2O)
Dana No: 39.03.10.01 Strunz No: 08.CF.10
Locality:

 

Notes: