Minguzzite Mineral Data

Minguzzite Mineral Data
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General Minguzzite Information

Help on Chemical Formula: Chemical Formula: K3Fe+++(C2O4)3•3(H2O)
Help on Composition: Composition: Molecular Weight = 491.25 gm
   Potassium  23.88 %  K    28.76 % K2O
   Iron       11.37 %  Fe   16.25 % Fe2O3
   Hydrogen    1.23 %  H    11.00 % H2O
   Carbon     14.67 %  C    43.98 % C2O3
   Oxygen     48.85 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K3Fe3+(C2O4)3•3(H2O)
Help on Environment: Environment: In limonite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1955
Help on Locality: Locality: Cape Calamita, Elba, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Carlo Minguzzi (1910-1953), Italian mineralogist and professor, University of Pavia.
Help on Name Pronunciation: Name Pronunciation: Minguzzite + Pronunciation Say MINGUZZITE
 

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Minguzzite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.3855:1:0.5168
Help on Cell Dimensions: Cell Dimensions: a = 7.66, b = 19.87, c = 10.27, Z = 4; beta = 105.1° V = 1,509.17 Den(Calc)= 2.16
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.9(1), 2.18(0.65), 3.61(0.65),
Click Here for Large Minguzzite Structure Window Crystal Structure:

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Herpin P , Bulletin de la Societe Francaise de Mineralogie et de Cristallographie , 81 (1958) p.245-256, Structure cristalline des trioxalates complexes de potassium II. Structure du, ferrotrioxalate de potassium racémique et comparaison avec les trioxalates, complexes actifs, Locality: synthetic, Note: C3 (y) changed to 0.259, but still unable to reproduce reported bond distances

 

Physical Properties of Minguzzite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Green, Yellow green.
Help on Density: Density: 2.092 - 2.142, Average = 2.11
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Minguzzite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.791 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.756 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2546,KPDmeas= 0.2597,KC= 0.145
Ncalc = 1.3 - 1.31
Help on Optical Data: Optical Data: Biaxial (-), a=1.498-1.501, b=1.554-1.555, g=1.594-1.597, bire=0.0960, 2V(Calc)=76-80, 2V(Meas)=78.
Help on Pleochroism (x): Pleochroism (x): yellow green.
Help on Pleochroism (y): Pleochroism (y): emerald green.
Help on Pleochroism (z): Pleochroism (z): emerald green.
 

Calculated Properties of Minguzzite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.15 gm/cc
note: Specific Gravity of Minguzzite =2.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.004288805
Boson Index = 0.995711195
Help on Photoelectric: Photoelectric: PEMinguzzite = 5.87 barns/electron
U=PEMinguzzite x relectron= 12.65 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 343.65 (Gamma Ray American Petroleum Institute Units)
Concentration of Minguzzite per GRapi unit = 0.29 (%)

Estimated Radioactivity from Minguzzite - barely detectable

 

Minguzzite Classification
Help on Dana Class: Dana Class: 50.01.04.01 (50)Salts of Organic Acids
  (50.01)(Oxalates)
  (50.01.04)Dana Group
 
50.01.04.01 Minguzzite K3Fe(C2O4)3•3(H2O) P 21/c 2/m
Help on Strunz Class: Strunz Class: 10.AB.25 10 - ORGANIC COMPOUNDS
  10.A - Salts of Organic Acids
  10.AB -Oxalates
 
10.AB.25 Minguzzite K3Fe(C2O4)3•3(H2O) P 21/c 2/m
 

Other Minguzzite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Minguzzite :
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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Print or Cut-and-Paste your Minguzzite Specimen Label here :

Minguzzite

K3Fe+++(C2O4)3•3(H2O)
Dana No: 50.01.04.01 Strunz No: 10.AB.25
Locality:

 

Notes: