Rodolicoite
A valid IMA mineral species
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About Rodolicoite
Francesco Rodolico
Formula:
Fe3+PO4
Colour:
Reddish brown
Lustre:
Greasy
Specific Gravity:
3.04 (Calculated)
Crystal System:
Trigonal
Name:
Named after Francesco Rodolico (1905, Florence, Italy – 30 March 1988, Florence, Italy), Professor of Mineralogy at the University of Florence, Italy, specialist of the history of geology and of building and ornamental materials, and author of "Le pietre delle città d’Italia".
This page provides mineralogical data about Rodolicoite.
Unique Identifiers
Mindat ID:
7271
Long-form identifier:
mindat:1:1:7271:3
IMA Classification of Rodolicoite
Classification of Rodolicoite
8.AB.
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Rdl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Rodolicoite
Greasy
Transparency:
Opaque
Colour:
Reddish brown
Streak:
Brown
Cleavage:
None Observed
Density:
3.04 g/cm3 (Calculated)
Chemistry of Rodolicoite
Mindat Formula:
Fe3+PO4
Element Weights:
Elements listed:
Crystallography of Rodolicoite
Crystal System:
Trigonal
Class (H-M):
32 - Trapezohedral
Space Group:
P3121
Cell Parameters:
a = 5.048 Å, c = 11.215 Å
Ratio:
a:c = 1 : 2.222
Unit Cell V:
247.50 ų (Calculated from Unit Cell)
Z:
3
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012693 | Rodolicoite | Long G J, Cheetham A K, Battle P D (1983) Study of the iron-phosphorus-oxygen system by Mossbauer effect, neutron diffraction, magnetic susceptibility, and analytical electron microscopy: some pitfalls and solutions in the analysis of a complex mixture Inorganic Chemistry 22 3012-3016 | 1983 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.445 Å | (100) |
| 4.360 Å | (19) |
| 2.362 Å | (14) |
| 1.8846 Å | (12) |
| 2.180 Å | (10) |
| 1.4214 Å | (10) |
Comments:
Synthetic
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 52 : Guano- and urine-derived minerals | <0.4 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Rodolicoite
General Appearance of Type Material:
Reddish brown nodules intimately intergrown with grattarolaite. 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:
Synonyms of Rodolicoite
Other Language Names for Rodolicoite
Common Associates
Associations Based on Photo Data:
| 3 photos of Rodolicoite associated with Grattarolaite | Fe3+3(PO4)O3 |
Related Minerals - Strunz-mindat Grouping
| 8.AB. | Kryzaite | Na4(MgCr)(PO4)3 |
| 8.AB. | Niasite | Ni2+4.5(AsO4)3 |
| 8.AB. | Johanngeorgenstadtite | Ni2+4.5(AsO4)3 |
| 8.AB. | Karwowskiite | Ca9Mg(Fe2+0.5◻0.5)(PO4)7 |
| 8.AB. | Olsenite | KFe4(PO4)3 |
| 8.AB. | Borisenkoite | Cu3[(V,As)O4]2 |
| 8.AB.05 | Farringtonite | Mg3(PO4)2 |
| 8.AB.10 | Natrophilite | NaMn2+PO4 |
| 8.AB.10 | 'Sicklerite' | Li1-x(Mn3+xMn2+1-x)PO4 |
| 8.AB.10 | Simferite | LiMg(PO4) |
| 8.AB.10 | Heterosite | Fe3+(PO4) |
| 8.AB.10 | Lithiophilite | LiMn2+PO4 |
| 8.AB.10 | Karenwebberite | NaFe2+PO4 |
| 8.AB.10 | Triphylite | LiFe2+PO4 |
| 8.AB.10 | 'Ferrisicklerite' | Li1-x(Fe3+xFe2+1-x)PO4 |
| 8.AB.10 | Purpurite | Mn3+(PO4) |
| 8.AB.15 | Zavalíaite | Mn2+3(PO4)2 |
| 8.AB.15 | Chopinite | Mg3(PO4)2 |
| 8.AB.15 | Sarcopside | Fe2+3(PO4)2 |
| 8.AB.20 | Beusite | Mn2+Mn2+2 (PO4)2 |
| 8.AB.20 | Graftonite-(Ca) | CaFe2+2(PO4)2 |
| 8.AB.20 | Graftonite-(Mn) | MnFe2+2(PO4)2 |
| 8.AB.20 | Graftonite | Fe2+Fe2+2(PO4)2 |
| 8.AB.20 | Beusite-(Ca) | CaMn2+2(PO4)2 |
| 8.AB.25 | Xanthiosite | Ni3(AsO4)2 |
| 8.AB.30 | Lammerite | Cu3(AsO4)2 |
| 8.AB.30 | Paralammerite | Cu3(AsO4)2 |
| 8.AB.35 | Mcbirneyite | Cu3(VO4)2 |
| 8.AB.35 | Pseudolyonsite | Cu3(VO4)2 |
| 8.AB.35 | Stranskiite | Zn2Cu(AsO4)2 |
| 8.AB.40 | Michalskiite | Fe3+1.33Cu2+2(MgFe3+)2(VO4)6 |
| 8.AB.40 | Lyonsite | Cu3Fe4(VO4)6 |
Other Information
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 Rodolicoite
mindat.org URL:
https://www.mindat.org/min-7271.html
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References for Rodolicoite
Reference List:
Ng, Hok Nam, Calvo, Crispin (1975) Refinement of the Crystal Structure of the Low-quartz Modification of Ferric Phosphate. Canadian Journal of Chemistry, 53 (14). 2064-2067 doi:10.1139/v75-287
Arnold, H. (1986) Crystal structure of FePO4 at 294 and 20 K. Zeitschrift für Kristallographie, 177 (1-2). p.139-142. doi:10.1524/zkri.1986.177.1-2.139
Localities for Rodolicoite
Showing 4 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Brazil | |
| Piló et al. (2023) |
Italy (TL) | |
| Cipriani et al. (1997) +1 other reference |
| Cipriani et al. (1997) +1 other reference |
Nigeria | |
| Okoli et al. (2023) |
Quick NavTopAbout RodolicoiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Castelnuovo Mine, Cavriglia, Arezzo Province, Tuscany, Italy