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About FerraioloiteHide

Jim Ferraiolo
Crystal System:
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: ‘Ou 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 Institution’s 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 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. Unique combination of elements.

The structure is layered with heteropolyhedra; layers || (100); there are isolated Mg(H2O)6 octahedra and water molecules between the layers.

Classification of FerraioloiteHide

Approval Year:

Optical Data of FerraioloiteHide

Biaxial (-)
RI values:
nα = 1.575 nβ = 1.583(5) nγ = 1.584(5)
Measured: 40° , Calculated: 40°
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
weak (r>v)
colourless (X, Z), blue grey (Y)

Chemical Properties of FerraioloiteHide

IMA Formula:
Common Impurities:

Crystallography of FerraioloiteHide

Crystal System:
Cell Parameters:
a = 25.333(3) Å, b = 6.299(1) Å, c = 15.161(3) Å
β = 90.93(3)°
a:b:c = 4.022 : 1 : 2.407
Unit Cell V:
2419 ų
platelets, blades

X-Ray Powder DiffractionHide

Powder Diffraction Data:

Type Occurrence of FerraioloiteHide

General Appearance of Type Material:
platelets and blades up to ca. 0.2 mm long and a few μm 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:

Synonyms of FerraioloiteHide

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 FerraioloiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mills, S.J., Grey, I.E., Kampf, A.R, MacRae, C.M., Smith, J.B., Davidson, C.J. and Glenn, A.M. (2015) Ferraioloite, IMA 2015-066. CNMNC Newsletter No. 28, December 2015, page 1862; Mineralogical Magazine: 79: 1859–1864.
Mills, S.J., Grey, I.E., Kampf, A.R., Macrae, C.M., Smith, J.B., Davidson, C.J. and Glenn, A.M. (2016) Ferraioloite, a new secondary phosphate mineral from the Foote mine, USA. European Journal of Mineralogy, 28(3), 655‒661.

Internet Links for FerraioloiteHide

Localities for FerraioloiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
Mills, S.J., Grey, I.E., Kampf, A.R., Macrae, C.M., Smith, J.B., Davidson, C.J. and Glenn, A.M. (2016) Ferraioloite, a new secondary phosphate mineral from the Foote mine, USA. European Journal of Mineralogy, 28(3), 655‒661.
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