Ferraioloite
A valid IMA mineral species
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About Ferraioloite
Jim Ferraiolo
Formula:
MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20
Crystal System:
Monoclinic
Name:
The species is named in honour of the late James (Jim) Anthony Ferraiolo (May 14, 1947-February 6, 2014). The mineral is pronounced /fe..(r) i: âOu lOu ait/. Jim worked as scientific assistant at the American Museum of Natural History (AMNH) from April 1978 until August 1982 and also as transaction coordinator at the Smithsonian Institutionâs Museum of Natural History from September 1982 until April 1985. He was best known for his publication A Systematic Classification of Nonsilicate Minerals (Bulletin 172 of the AMNH, 1982), which was widely used in Museum collections, as a basis for collection classification and organisation (e.g. Museums Victoria, Australia). Recently, Jim was a member of the IMA CNMNC subcommittee for mineral group nomenclature and the subcommittee on unnamed minerals. Jim also spent more than a decade as a manager with mindat.org and was instrumental in publishing the description of ferrolaueite (Ferraiolo, 2012; Segeler et al., 2012).
First described from sample found at the eastern dump of the Foote Lithium Company mine, Cleveland Co., North Carolina, USA.
Closely related to falsterite. Chemically somewhat resembles jasonsmithite.
The structure is layered with heteropolyhedra; layers || (100); there are isolated Mg(H2O)6 octahedra and water molecules between the layers.
Closely related to falsterite. Chemically somewhat resembles jasonsmithite.
The structure is layered with heteropolyhedra; layers || (100); there are isolated Mg(H2O)6 octahedra and water molecules between the layers.
Unique Identifiers
Mindat ID:
46878
Long-form identifier:
mindat:1:1:46878:7
Similar Names
| Ferrilite | A synonym of 'Dolerite' |
| Ferrolite | An artificial material |
IMA Classification of Ferraioloite
Approved
IMA Formula:
MgMn2+4(Fe2+0.5Al0.5)4Zn2+4(PO4)8(OH)4·20H2O
Approval year:
2015
First published:
2016
Type description reference:
Mills, Stuart J., Grey, Ian E., Kampf, Anthony R., MaCrae, Colin M., Smith, Jason B., Davidson, Cameron J., Glenn, A. Matt (2016) Ferraioloite, MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20, a new secondary phosphate mineral from the Foote mine, USA. European Journal of Mineralogy, 28 (3) 655-661 doi:10.1127/ejm/2016/0028-2525
Classification of Ferraioloite
8.CF.
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
F : With large and medium-sized cations, RO4:H2O > 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
F : With large and medium-sized cations, RO4:H2O > 1:1
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Frl | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Optical Data of Ferraioloite
Type:
Biaxial (-)
RI values:
nα = 1.575 nβ = 1.5825(5) nγ = 1.5835(5)
2V:
Measured: 40° , Calculated: 40°
Max. Birefringence:
δ = 0.009
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 Âĩm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 Âĩm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
weak (r>v)
Comments:
colourless (X, Z), blue grey (Y)
Chemistry of Ferraioloite
Mindat Formula:
MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20
Element Weights:
Common Impurities:
Ca
Crystallography of Ferraioloite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
I2/m
Cell Parameters:
a = 25.333(3) Å, b = 6.299(1) Å, c = 15.161(3) Å
β = 90.93(3)°
β = 90.93(3)°
Ratio:
a:b:c = 4.022 : 1 : 2.407
Unit Cell V:
2419 Ã
Âģ
Morphology:
platelets, blades
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.7 Ã | (100) |
| 4.78 Ã | (4) |
| 4.22 Ã | (4) |
| 3.580 Ã | (4) |
| 3.499 Ã | (5) |
| 3.245 Ã | (7) |
| 2.924 Ã | (8) |
| 2.869 Ã | (5) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Ferraioloite
General Appearance of Type Material:
platelets and blades up to ca. 0.2 mm long and a few Ξm thick
Place of Conservation of Type Material:
Cotype material is deposited in the mineralogical collections of the Museum Victoria, Melbourne, Australia, registration numbers M53492 and M53493, and the Natural History Museum of Los Angeles County, Los Angeles, California,USA, catalogue numbers 65593
Geological Setting of Type Material:
vugs in a thin sugary fine-grained pegmatite seam
Associated Minerals at Type Locality:
Reference:
Mills, Stuart J., Grey, Ian E., Kampf, Anthony R., MaCrae, Colin M., Smith, Jason B., Davidson, Cameron J., Glenn, A. Matt (2016) Ferraioloite, MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20, a new secondary phosphate mineral from the Foote mine, USA. European Journal of Mineralogy, 28 (3) 655-661 doi:10.1127/ejm/2016/0028-2525
Synonyms of Ferraioloite
Other Language Names for Ferraioloite
Dutch:Ferraioloiet
German:Ferraioloit
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.CF. | Naalasite | NaAl(AsO3OH)2 · H2O |
| 8.CF. | Nafeasite | Na3Fe3+3(AsO3OH)6 · 3H2O |
| 8.CF. | Falsterite | Ca2MgMn2+2Fe2+2Fe3+2Zn4(PO4)8(OH)4(H2O)14 |
| 8.CF. | Espadaite | Na4Ca3Mg2[AsO3(OH)]2[AsO2(OH)2]10 · 7H2O |
| 8.CF. | Liraite | NaCa2Mn2+2[Fe3+Fe2+]Mn2+2(PO4)6(H2O)2 |
| 8.CF.05 | Tassieite | (Na,âŧ)Ca2(Mg,Fe2+,Fe3+)2(Fe2+,Mg)2(Fe3+,Mg)2(PO4)6 · 2H2O |
| 8.CF.05 | Bederite | Ca2(Mn2+)4(Fe3+)2(PO4)6 · 2H2O |
| 8.CF.05 | Wicksite | NaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2O |
| 8.CF.05 | Grischunite | NaCa2Mn2+5Fe3+(AsO4)6 · 2H2O |
| 8.CF.05 | Maneckiite | (Naâŧ)Ca2Fe2+2(Fe3+Mg)Mn2(PO4)6 · 2H2O |
| 8.CF.10 | Haigerachite | KFe3+3(PO3OH)2[PO2(OH)2]6 · 4H2O |
| 8.CF.10 | Yazganite | NaFe3+2(Mg,Mn2+)(AsO4)3 · H2O |
| 8.CF.15 | Currierite | Na4Ca3MgAl4(AsO3OH)12 · 9H2O |
| 8.CF.20 | RÃosecoite | Ca2Mg(AsO3OH)3(H2O)2 |
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 Ferraioloite
mindat.org URL:
https://www.mindat.org/min-46878.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Ferraioloite
Reference List:
HÃĨlenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter no 28. Mineralogical Magazine, 79 (7) 1859-1864 doi:10.1180/minmag.2015.079.7.18
Mills, Stuart J., Grey, Ian E., Kampf, Anthony R., MaCrae, Colin M., Smith, Jason B., Davidson, Cameron J., Glenn, A. Matt (2016) Ferraioloite, MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20, a new secondary phosphate mineral from the Foote mine, USA. European Journal of Mineralogy, 28 (3) 655-661 doi:10.1127/ejm/2016/0028-2525
Localities for Ferraioloite
Showing 2 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
Portugal | |
| DOI: ... +1 other reference |
USA (TL) | |
| Mills et al. (2016) |
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SÃtio do Castelo Mine, Folgosinho, Gouveia, Guarda, Portugal