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Grattarolaite

A valid IMA mineral species
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05621920017688530449696.jpg
Grattarolaite, etc.

Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy
08674020017271928643913.jpg
Grattarolaite, etc.

Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy
05621920017688530449696.jpg
Grattarolaite, etc.

Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy
08674020017271928643913.jpg
Grattarolaite, etc.

Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy
05621920017688530449696.jpg
Grattarolaite, etc.

Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy
08674020017271928643913.jpg
Grattarolaite, etc.

Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy
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About GrattarolaiteHide

06632220017271928696090.jpg
Giuseppe Grattarola
Formula:
Fe3+3(PO4)O3
Colour:
Reddish brown
Lustre:
Greasy
Specific Gravity:
4.08 (Calculated)
Crystal System:
Trigonal
Name:
Named in honor of Giuseppe Grattarola (1905, Vercelli, Italy - 1988, Florence, Italy), Professor of Mineralogy at the University of Florence, Italy.
This page provides mineralogical data about Grattarolaite.


Unique IdentifiersHide

Mindat ID:
6978
Long-form identifier:
mindat:1:1:6978:2

IMA Classification of GrattarolaiteHide

IMA status:
Approved
IMA Formula:
Fe3+3O3PO4
Approval year:
1995
First published:
1997

Classification of GrattarolaiteHide

Strunz-mindat (2026):
8.BE.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
GraIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of GrattarolaiteHide

Lustre:
Greasy
Colour:
Reddish brown
Streak:
Brown
Hardness Data:
Could not be measured
Cleavage:
None Observed
Density:
4.08 g/cm3 (Calculated)

Chemistry of GrattarolaiteHide

Mindat Formula:
Fe3+3(PO4)O3
Element Weights:
Element% weight
Fe53.956 %
O36.069 %
P9.975 %

Calculated from ideal end-member formula.
Elements listed:
Fe, O, P - search for minerals with similar chemistry

Crystallography of GrattarolaiteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 7.994 Å, c = 6.855 Å
Ratio:
a:c = 1 : 0.858
Unit Cell V:
379.37 ų (Calculated from Unit Cell)
Z:
3

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0013505GrattarolaiteModaressi A, Courtois A, Gerardin R, Malaman B, Gleitzer C (1983) Fe3PO7, un cas de coordinence 5 du fer trivalent, etude structurale et magnetique Journal of Solid State Chemistry 47 245-2551983synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.09 Å(100)
1.623 Å(23)
2.078 Å(20)
2.446 Å(16)
1.440 Å(16)
1.997 Å(13)
1.545 Å(12)
Comments:
Synthetic

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
50 : Coal and/or oil shale minerals<0.36
Stage 10b: Anthropogenic minerals<10 Ka
54 : Coal and other mine fire minerals (see also #51 and #56)

Type Occurrence of GrattarolaiteHide

Type Locality:
ⓘ Castelnuovo Mine (Castelnuovo Pit; Castelnuovo deposit), Cavriglia, Arezzo Province, Tuscany, Italy
General Appearance of Type Material:
Reddish brown nodules intimately intergrown with rodolicoite. Small crystallites <100 nm.
Place of Conservation of Type Material:
Museum of Natural History, Florence University, Florence, Italy, 2087/RI.
Geological Setting of Type Material:
Lignite mine.
Associated Minerals at Type Locality:
Rodolicoite

Synonyms of GrattarolaiteHide

Other Language Names for GrattarolaiteHide

Common AssociatesHide

Associations Based on Photo Data:
3 photos of Grattarolaite associated with RodolicoiteFe3+PO4

Related Minerals - Strunz-mindat GroupingHide

8.BE.05AugeliteAl2(PO4)(OH)3Mon. 2/m : B2/m
8.BE.15CornetiteCu3(PO4)(OH)3Orth. mmm(2/m2/m2/m) : Pbca
8.BE.20ClinoclaseCu3(AsO4)(OH)3Mon. 2/m : P21/b
8.BE.25GilmariteCu3(AsO4)(OH)3Tric. 1 : P1
8.BE.25ArhbariteCu2Mg(AsO4)(OH)3Tric. 1 : P1
8.BE.30FlinkiteMn2+2Mn3+(AsO4)(OH)4Orth. mmm(2/m2/m2/m) : Pnma
8.BE.30ArganditeMn7(VO4)2(OH)8Mon. 2/m : P21/m
8.BE.30RaadeiteMg7(PO4)2(OH)8Mon. 2/m
8.BE.30AllactiteMn2+7(AsO4)2(OH)8Mon. 2/m : P21/b
8.BE.35'Mineral E (of Dunn, et. al., 1982)'Orth. mmm(2/m2/m2/m)
8.BE.35Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
8.BE.35Magnesiochlorophoenicite(Mg,Mn)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
8.BE.40Gerdtremmelite(Zn,Fe)(Al,Fe)2(AsO4)(OH)5Tric.
8.BE.45DixeniteCuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6Trig. 3 : R3
8.BE.45McgoverniteMn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21Trig. 3m : R3c
8.BE.45Hematolite(Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23Trig. 3 : R3
8.BE.45Turtmannite(Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+xTrig.
8.BE.45CarlfrancisiteMn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42Trig. 3m : R3c
8.BE.45Arakiite(Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23Mon. m : Bb
8.BE.45KraissliteZn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16Orth. 222 : C2221
8.BE.50SynadelphiteMn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2OOrth. mmm(2/m2/m2/m) : Pnma
8.BE.55Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8Orth. mmm(2/m2/m2/m) : Ccca
8.BE.60KoliciteMn2+7Zn4(AsO4)2(SiO4)2(OH)8Orth. mmm(2/m2/m2/m) : Cmca
8.BE.65Sabelliite(Cu,Zn)2Zn(AsO4,SbO4)(OH)3Trig. 3 : P3
8.BE.70JarosewichiteMn2+3Mn3+(AsO4)(OH)6Orth. 222
8.BE.75TheisiteCu5Zn5(AsO4,SbO4)2(OH)14Orth.
8.BE.80CoparsiteCu4(AsO4,VO4)O2ClOrth. mmm(2/m2/m2/m) : Pbcm
8.BE.85WaterhouseiteMn2+7(PO4)2(OH)8Mon. 2/m : P21/b
8.BE.90VasilseverginiteCu9O4(AsO4)2(SO4)2Mon. 2/m

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.

Internet Links for GrattarolaiteHide

References for GrattarolaiteHide

Localities for GrattarolaiteHide

Showing 2 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Italy (TL)
 
  • Tuscany
    • Arezzo Province
      • Cavriglia
Cipriani et al. (1997) +1 other reference
    • Upper Valdarno (Upper Val d'Arno)
      • Santa Barbara lignite district (Santa Barbara lignite basin; Cavriglia lignite basin; San Giovanni Valdarno lignite basin)
Cipriani et al. (1997) +1 other reference
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