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Nannoniite
A valid IMA mineral species
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About Nannoniite
Roberto Nannoni
Formula:
Al2(OH)5F
Colour:
colourless to white
Lustre:
Vitreous, Earthy
Hardness:
2 - 3
Specific Gravity:
2.492 (Calculated)
Crystal System:
Monoclinic
Name:
The name honours Roberto Nannoni (1943–2022) for his contribution to the knowledge of Tuscan mineralogy. Roberto graduated in geological sciences at the University of Pisa in 1967. After graduating, he became a teacher of chemistry, biology, and earth sciences at secondary schools. He was a collaborator of the Museo Provinciale di Storia Naturale of Leghorn from 1972 to 1998, and, during the 1980s, he was honorary curator of the mineralogical collection of that museum.
Homeotypic with gibbsite.
This phase was originally discovered at Francon Quarry, Quebec, Canada and first noted in the description of weloganite by Sabina et al. (1968) as a "fine-grained white mineral which gives an X-ray pattern somewhat similar to that of gibbsite." It was later reported in detail with optics, microprobe, PXRD, and thermogravimetry in Jambor et al. (1990). It was then designated as "UM1990-28-OHF:Al" in the list of unnamed valid minerals. However, due to the lack of enough pure material, the mineral was not submitted for the approval as a new mineral species. Crystals of sufficient quality were discovered later at the Le Cetine di Cotorniano Mine and formally described under the name "nannoniite".
This phase was originally discovered at Francon Quarry, Quebec, Canada and first noted in the description of weloganite by Sabina et al. (1968) as a "fine-grained white mineral which gives an X-ray pattern somewhat similar to that of gibbsite." It was later reported in detail with optics, microprobe, PXRD, and thermogravimetry in Jambor et al. (1990). It was then designated as "UM1990-28-OHF:Al" in the list of unnamed valid minerals. However, due to the lack of enough pure material, the mineral was not submitted for the approval as a new mineral species. Crystals of sufficient quality were discovered later at the Le Cetine di Cotorniano Mine and formally described under the name "nannoniite".
Unique Identifiers
Mindat ID:
471229
Long-form identifier:
mindat:1:1:471229:5
IMA Classification of Nannoniite
Approved
Approval year:
2024
Type description reference:
Classification of Nannoniite
4.FE.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
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 |
|---|---|---|
| Nnn | 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 Nannoniite
Vitreous, Earthy
Colour:
Colourless to white
Streak:
White
Hardness:
2 - 3 on Mohs scale
Comment:
in analogy with gibbsite
Tenacity:
Brittle
Cleavage:
Perfect
{001}
{001}
Density:
2.492 g/cm3 (Calculated)
Chemistry of Nannoniite
Mindat Formula:
Al2(OH)5F
Element Weights:
Elements listed:
Crystallography of Nannoniite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/c
Setting:
P21/n
Cell Parameters:
a = 8.688(3) Å, b = 5.024(2) Å, c = 9.734(4) Å
β = 90.77(2)°
β = 90.77(2)°
Ratio:
a:b:c = 1.729 : 1 : 1.938
Unit Cell V:
424.84 ų (Calculated from Unit Cell)
Z:
4
Epitaxial Relationships of Nannoniite
Epitaxial Minerals:
| 'Weloganite' | Na2Sr3Zr(CO3)6 · 3H2O |
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.86 Å | (vs) |
| 4.35 Å | (s) |
| 3.241 Å | (m) |
| 2.427 Å | (ms) |
| 2.223 Å | (mw) |
| 1.981 Å | (m) |
| 1.742 Å | (mw) |
| 1.447 Å | (m) |
Reference:
Comments:
X-ray powder diffraction pattern is similar, but not identical, to that of gibbsite.
Type Occurrence of Nannoniite
General Appearance of Type Material:
occurs as (hemi-)spherical aggregates, up to 1 mm in diameter, formed by spindle-like crystals or tabular individuals.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue numbers 20071 (holotype) and 20072 (cotype)
Associated Minerals at Type Locality:
Reference:
Synonyms of Nannoniite
Other Language Names for Nannoniite
Dutch:Nannoniiet
German:Nannoniit
Common Associates
Associations Based on Photo Data:
| 11 photos of Nannoniite associated with Quartz | SiO2 |
| 8 photos of Nannoniite associated with Weloganite | Na2Sr3Zr(CO3)6 · 3H2O |
| 6 photos of Nannoniite associated with Calcite | CaCO3 |
| 4 photos of Nannoniite associated with Albite | Na(AlSi3O8) |
| 4 photos of Nannoniite associated with Montroyalite | Sr4Al8(CO3)3(OH,F)26 · 10-11H2O |
| 4 photos of Nannoniite associated with Strontiodresserite | SrAl2(CO3)2(OH)4 · H2O |
| 3 photos of Nannoniite associated with Hydrodresserite | BaAl2(CO3)2(OH)4 · 3H2O |
| 3 photos of Nannoniite associated with Baryte | BaSO4 |
| 2 photos of Nannoniite associated with Wurtzite | (Zn,Fe)S |
| 2 photos of Nannoniite associated with Dolomite | CaMg(CO3)2 |
Related Minerals - Strunz-mindat Grouping
| 4.FE.05 | Brucite | Mg(OH)2 |
| 4.FE.05 | Theophrastite | Ni(OH)2 |
| 4.FE.05 | Amakinite | Fe2+(OH)2 |
| 4.FE.05 | Portlandite | Ca(OH)2 |
| 4.FE.05 | Pyrochroite | Mn(OH)2 |
| 4.FE.10 | Doyleite | Al(OH)3 |
| 4.FE.10 | Bayerite | Al(OH)3 |
| 4.FE.10 | Nordstrandite | Al(OH)3 |
| 4.FE.10 | Gibbsite | Al(OH)3 |
| 4.FE.15 | Lepidocrocite | Fe3+O(OH) |
| 4.FE.15 | Böhmite | AlO(OH) |
| 4.FE.20 | Heterogenite | Co3+O(OH) |
| 4.FE.20 | Grimaldiite | CrO(OH) |
| 4.FE.25 | Lithiophorite | (Al,Li)MnO2(OH)2 |
| 4.FE.25 | Feitknechtite | Mn3+O(OH) |
| 4.FE.30 | Quenselite | PbMnO2(OH) |
| 4.FE.35 | Ferrihydrite | Fe3+10O14(OH)2 |
| 4.FE.40 | Vernadite | (Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O |
| 4.FE.40 | Feroxyhyte | Fe3+O(OH) |
| 4.FE.45 | Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
| 4.FE.50 | Fuettererite | Pb3Cu2+6Te6+O6(OH)7Cl5 |
Fluorescence of Nannoniite
shows a bluish-white fluorescence under shortwave UV radiation (λ=254 nm) and a yellowish-white fluorescence under longwave UV radiation (λ=350 nm).
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 Nannoniite
mindat.org URL:
https://www.mindat.org/min-471229.html
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References for Nannoniite
Reference List:
Sabina, Ann P., Jambor, John L., Plant, A. G. (1968) Weloganite, a new strontium zirconium carbonate from Montreal Island, Canada. The Canadian Mineralogist, 9 (4) 468-477 p.476 - First recorded literature entry; mentioned as an unnamed mineral similar to gibbsite
Jambor, John L.; Sabina, Ann P.; Ramik, Robert A.; Sturman, B. Drako (1990) A fluorine-bearing gibbsite-like mineral from the Francon quarry, Montreal, Quebec. The Canadian Mineralogist, 28 (1). 147-153
Biagioni, C., Mugnaioli, E., Lorenzon, S., Mauro, D., Musetti, S., Sejkora, J., Belmonte, D., Demitri, N., Dolníček, Z. (2024) Nannoniite, IMA 2024-010, in IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 80. European Journal of Mineralogy, 36 (4). 599-604 doi:10.5194/ejm-36-599-2024
Localities for Nannoniite
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.
Canada | |
| Sabina et al. (1968) +1 other reference |
| Sabina et al. (1968) | |
Italy (TL) | |
| Biagioni et al. (2024) |
Norway | |
| Husdal (2019) |
Quick NavTopAbout NannoniiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography Epitaxial Relationships X-Ray Powder DiffractionType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Francon quarry, Montréal, Québec, Canada