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Minguzzite

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Carlo Minguzzi
Formula:
K3Fe3+(C2O4)3 · 3H2O
Colour:
Green, yellow-green
Lustre:
Sub-Vitreous
Specific Gravity:
2.142
Crystal System:
Monoclinic
Name:
For University of Parvia, Parvia, Lombardy, Italy mineralogist, Carlo Minguzzi [October 9, 1910 - October 17, 1953].
This page provides mineralogical data about Minguzzite.


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Classification of MinguzziteHide

Approved, 'Grandfathered' (first described prior to 1959)
10.AB.25

10 : ORGANIC COMPOUNDS
A : Salts of organic acids
B : Oxalates
50.1.4.1

50 : ORGANIC COMPOUNDS
1 : Oxalates
31.1.10

31 : Oxalates, Citrates, Mellitates and Acetates
1 : Oxalates

Physical Properties of MinguzziteHide

Sub-Vitreous
Transparency:
Transparent, Translucent
Colour:
Green, yellow-green
Tenacity:
Brittle
Cleavage:
Perfect
{010}
Density:
2.142 g/cm3 (Measured)    2.156 g/cm3 (Calculated)

Optical Data of MinguzziteHide

Type:
Biaxial (-)
RI values:
nα = 1.498 - 1.501 nβ = 1.554 - 1.555 nγ = 1.594 - 1.597
2V:
Measured: 78° , Calculated: 76° to 80°
Birefringence:
0.096
Max Birefringence:
δ = 0.096
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v
Optical Extinction:
Inclined
Pleochroism:
Strong
Comments:
X yellow green, Y,Z emerald green

Chemical Properties of MinguzziteHide

Formula:
K3Fe3+(C2O4)3 · 3H2O

Crystallography of MinguzziteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 7.66 Å, b = 19.87 Å, c = 10.27 Å
β = 105.1°
Ratio:
a:b:c = 0.386 : 1 : 0.517
Unit Cell V:
1,509.17 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular crystals

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.2 (50)
6.9 (100)
4.96 (60)
3.61 (70)
3.16 (50)
3.03 (40)
2.67 (60)
2.18 (70)
Comments:
ICDD 14-720 (synthetic)

Type Occurrence of MinguzziteHide

Other Language Names for MinguzziteHide

German:Minguzzit
Spanish:Minguzzita

Related Minerals - Nickel-Strunz GroupingHide

10.AB.05HumboldtineFe2+(C2O4) · 2H2OMon. 2/m
10.AB.05LindbergiteMn2+(C2O4) · 2H2OMon. 2/m
10.AB.10GlushinskiteMg(C2O4) · 2H2OMon.
10.AB.15MoolooiteCu(C2O4) · 0.4H2OOrth.
10.AB.20StepanoviteNaMgFe3+(C2O4)3 · 8-9H2OTrig. 3m : P3c1
10.AB.30WheatleyiteNa2Cu(C2O4)2 · 2H2OTric.
10.AB.35ZhemchuzhnikoviteNaMgAl(C2O4)3 · 8H2OTrig. 3m : P3c1
10.AB.40WeddelliteCa(C2O4) · (2.5-x)H2OTet. 4/m : I4/m
10.AB.45WhewelliteCa(C2O4) · H2OMon. 2/m : P21/b
10.AB.50CaoxiteCa(C2O4) · 3H2OTric.
10.AB.55Oxammite(NH4)2(C2O4) · H2OOrth. 2 2 2 : P21 21 2
10.AB.60NatroxalateNa2(C2O4)Mon.
10.AB.65Coskrenite-(Ce)(Ce,Nd,La)2(C2O4)(SO4)2 · 12H2OTric.
10.AB.70Levinsonite-(Y)(Y,Nd,La)Al(C2O4)(SO4)2 · 12H2OMon. 2/m
10.AB.75Zugshunstite-(Ce)(Ce,Nd,La)Al(C2O4)(SO4)2 · 12H2OMon.
10.AB.80NovgorodovaiteCa2(C2O4)Cl2 · 2H2OMon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

31.1.1Oxammite(NH4)2(C2O4) · H2OOrth. 2 2 2 : P21 21 2
31.1.2MoolooiteCu(C2O4) · 0.4H2OOrth.
31.1.3WheatleyiteNa2Cu(C2O4)2 · 2H2OTric.
31.1.4GlushinskiteMg(C2O4) · 2H2OMon.
31.1.5WhewelliteCa(C2O4) · H2OMon. 2/m : P21/b
31.1.6WeddelliteCa(C2O4) · (2.5-x)H2OTet. 4/m : I4/m
31.1.7HumboldtineFe2+(C2O4) · 2H2OMon. 2/m
31.1.8StepanoviteNaMgFe3+(C2O4)3 · 8-9H2OTrig. 3m : P3c1
31.1.9ZhemchuzhnikoviteNaMgAl(C2O4)3 · 8H2OTrig. 3m : P3c1

Fluorescence of MinguzziteHide

Not fluorescent

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MinguzziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Analytical Chemistry (1938) v 10, p. 488.
Accademia Nazionale dei Lincei (1955) v 18, p. 392.
American Mineralogist (1956): 41: 370.
Bulletin de Mineralogie (1958): 81: 245-256. (Structure)

Internet Links for MinguzziteHide

Localities for MinguzziteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy (TL)
 
  • Tuscany
    • Livorno Province
      • Elba Island
        • Capoliveri
Atti Accad.Lincei.Rend.Cl.Sci.fis.mat.nat., Roma (1955) ser.8, 18, 392-402
C.L. Garavelli (1955) – Un nuovo minerale tra i prodotti secondari del giacimento di Capo Calamita (Isola d ' Elba). – Atti Acc. Naz. Lincei, Rend., v.18, s.8, f.4: 392-402.
Mineral and/or Locality  
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