Mineralogy Database

Whitmoreite Mineral Data

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General Whitmoreite Information

Help on Chemical  Formula: Chemical Formula: Fe++Fe+++2(PO4)2(OH)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 463.56 gm
   Iron        36.14 %  Fe   46.50 % FeO
   Phosphorus  13.36 %  P    30.62 % P2O5
   Hydrogen     2.17 %  H    19.43 % H2O
   Oxygen      48.32 %  O
              ______        ______ 
              100.00 %       96.55 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+Fe2+2(PO4)2(OH)2•4(H2O)
Help on Environment: Environment: Hydrothermal alteration product of triphylite in cavities in quartz-bearing pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Palermo No. 1 mine, North Groton, New Hampshire, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert W. Whitmore (1936-), Micromount mineral collector and owner of the Palermo mine, New Hampshire, USA.
Help on Name Pronunciation: Name Pronunciation: Whitmoreite + Pronunciation Say WHITMOREITE
Help on Synonym: Synonym: ICSD 6202
  PDF 26-1138
 

Whitmoreite Image

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  Whitmoreite

Comments: Two stellate crystal clusters of whitmoreite.
Location: Big Chief mine, Keystone, Penninton County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Whitmoreite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0277:1:0.5622
Help on Cell Dimensions: Cell Dimensions: a = 10, b = 9.73, c = 5.471, Z = 2; beta = 93.8° V = 531.16 Den(Calc)= 2.90
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.05(1), 4.98(0.7), 7.01(0.7),
 

Physical Properties of Whitmoreite

Help on Cleavage: Cleavage: {100} Good
Help on Color: Color: Brown, Greenish brown, Light yellow brown, Dark brown.
Help on Density: Density: 2.87
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Adamantine
 

Optical Properties of Whitmoreite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.19 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.177 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2467,KPDmeas= 0.2492,KC= 0.2095
Ncalc = 1.6 - 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.676, b=1.725, g=1.745, bire=0.0690, 2V(Calc)=62, 2V(Meas)=60-65.
Help on Pleochroism (x): Pleochroism (x): light green brown.
Help on Pleochroism (y): Pleochroism (y): light green brown.
Help on Pleochroism (z): Pleochroism (z): dark green brown.
 

Calculated Properties of Whitmoreite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.88 gm/cc
note: Specific Gravity of Whitmoreite =2.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0078973614
Boson Index = 0.9921026386
Help on Photoelectric: Photoelectric: PEWhitmoreite = 11.30 barns/electron
U=PEWhitmoreite x rElectron Density= 32.52 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Whitmoreite is Not Radioactive
 

Whitmoreite Classification

Help on  Dana Class: Dana Class: 42.11.18.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.18)Whitmoreite Group
 
42.11.18.01 Whitmoreite FeFe2(PO4)2(OH)2•4(H2O) P 21/c 2/m
 
42.11.18.02 Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) P 21/c 2/m
 
42.11.18.03 Ojuelaite ZnFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m
 
42.11.18.04 Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2•4(H2O) P 21/c 2/m
 
42.11.18.05 Gladiusite! Fe2(Fe,Mg)4(PO4)(OH)13•H2O P 21/n 2/m
 
42.11.18.06 Cobaltarthurite! CoFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m
 
42.11.18.07 Kunatite CuFe2(PO4)2(OH)2•4H2O P 21/c 2/m
 
42.11.18.08 Bendadaite! FeFe2(AsO4)2(OH)2•4H2O P 21/c 2/m
Help on  Strunz Class: Strunz Class: 08.DC.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
 
08.DC.15 Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2•4(H2O) P 21/c 2/m
 
08.DC.15 Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) P 21/c 2/m
 
08.DC.15 Ojuelaite ZnFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m
 
08.DC.15 Whitmoreite FeFe2(PO4)2(OH)2•4(H2O) P 21/c 2/m
 
08.DC.15 Cobaltarthurite! CoFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m
 
08.DC.15 Kunatite CuFe2(PO4)2(OH)2•4H2O P 21/c 2/m
 
08.DC.15 Bendadaite! FeFe2(AsO4)2(OH)2•4H2O P 21/c 2/m
 

Other Whitmoreite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Whitmoreite :
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
15 - WWW-MINCRYST

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Whitmoreite

Fe++Fe+++2(PO4)2(OH)2•4(H2O)
Dana No: 42.11.18.01 Strunz No: 08.DC.15
Locality:

 

Notes:

 

 
   
 


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