Haigerachite Mineral Data

General Haigerachite Information

Chemical Formula:

KFe+++3(H2PO4)6(HPO4)2•4(H2O)

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

Empirical Formula:

KFe³⁺₃H₁₄(PO₄)₈•4(H₂O)

Environment:

Secondary mineral formed in the dump material of the mine.

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Silberbrunnle mine dump near Gengenbach in the central Black Forest, Aufschluss, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for the village and valley near the locality.

Synonym:

IMA1997-049

Search for Haigerachite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Haigerachite Crystallography

Axial Ratios:

a:b:c =1.7674:1:1.8321

Cell Dimensions:

a = 16.95, b = 9.59, c = 17.57, Z = 4; beta = 90.85° V = 2,855.70 Den(Calc)= 2.45

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 1 1 0) ( 1 0 0) ( 0 0 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Physical Properties of Haigerachite

Cleavage:

{001} Good

Color:

White.

Density:

2.44

Diaphaneity:

Transparent to Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Habit:

Scaly - Morphology like fish scales.

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Haigerachite

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

Optical Data:

Biaxial (-), a=1.557, b=1.598, g=1.602, bire=0.0450

Calculated Properties of Haigerachite

Electron Density:

Bulk Density (Electron Density)=2.44 gm/cc
note: Specific Gravity of Haigerachite =2.44 gm/cc.

Fermion Index:

Fermion Index = 0.003644709
Boson Index = 0.996355291

Photoelectric:

PE_Haigerachite= 6.17 barns/electron
U=PE_Haigerachite x r_electron= 15.09 barns/cc.

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

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

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

References:

NAME( AmMin, V 85, p263) PHYS. PROP.(AmMin, V 85, p263) OPTIC PROP.(AmMin, V85, p263)

See Also:

Links to other databases for Haigerachite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Haigerachite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Haigerachite :

A Bijoux Google Search for Haigerachite
Adam's Minerals Google Search for Haigerachite
Cape Minerals Google Search for Haigerachite
Dakota Matrix Minerals Google Search for Haigerachite
Excalibur Mineral Corp. Google Search for Haigerachite
Exceptional Minerals Google Search for Haigerachite
John Betts Fine Minerals Search for Haigerachite
McDougall Minerals Google Search for Haigerachite
Mineral News Website Link
Rock and Mineral Shows Google Search for Haigerachite
Weinrich Minerals, Inc. Google Search for Haigerachite

Ask about Haigerachite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Haigerachite Specimen Label here :

Haigerachite

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

Notes: