Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About BalangeroiteHide

Crystal System:
Named for the type locality in the Balangero - Corio area, Torino Province, Piedmont, Italy.
Isostructural with:
Two polytypes are known, 2M and 1A (Bonaccorsi et al., 2012).

Classification of BalangeroiteHide


9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
3 : Single-Width Unbranched Chains, W=1 with chains P=4

14 : Silicates not Containing Aluminum
21 : Silicates of Fe and Mg

Physical Properties of BalangeroiteHide


Optical Data of BalangeroiteHide

RI values:
nα = 1.680 nγ = 1.680
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v strong

Chemical Properties of BalangeroiteHide

IMA Formula:
Common Impurities:

Crystallography of BalangeroiteHide

Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Unit Cell Volume (calc):
Triclinic Monoclinic 
1 - Pinacoidal2/m - Prismatic
a = 9.602 Å, b = 13.891 Å, c = 14.012 Å
α = 86.99°, β = 76.79°, γ = 76.67°
a = 19.179 Å, b = 9.601 Å, c = 19.218 Å
β = 90.52°
a:b:c = 0.691 : 1 : 1.009a:b:c = 1.998 : 1 : 2.002
V 1,770.47 ų
(Calculated from Unit Cell)
V 3,538.61 ų
(Calculated from Unit Cell)

Type Occurrence of BalangeroiteHide

Synonyms of BalangeroiteHide

Other Language Names for BalangeroiteHide

Related Minerals - Nickel-Strunz GroupingHide

9.DH.05LeucophaniteNaCaBeSi2O6FOrth. 2 2 2 : P21 21 21
9.DH.10OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2OMon.
9.DH.30KrauskopfiteBaSi2O5 · 3H2OMon.
9.DH.35GageiteMn21(Si4O12)2O3(OH)20Mon. 2/m
9.DH.40AenigmatiteNa4[Fe2+10Ti2]O4[Si12O36]Tric. 1 : P1
9.DH.40HøgtuvaiteCa4[Fe2+6Fe3+6]O4[Si8Be2Al2O36]Tric. 1 : P1
9.DH.40Makarochkinite(Ca,Na)4[Fe2+8Fe3+2Ti2]O4[Si8Be2Al2O36]Tric. 1 : P1
9.DH.40RhöniteCa4[Mg8Fe3+2Ti2]O4[Si6Al6O36]Tric. 1 : P1
9.DH.40SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]Tric. 1 : P1
9.DH.40WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]Tric. 1 : P1
9.DH.40WilkinsoniteNa2Fe2+4Fe3+2(Si6O18)O2Tric. 1 : P1
9.DH.45SapphirineMg4(Mg3Al9)O4[Si3Al9O36]Mon. 2/m : P21/b
9.DH.50Khmaralite(Mg,Al,Fe)16[(Al,Si,Be)12O36]O4Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide,Mg,Zn)42Si16O54(OH)40Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.21.2Ringwoodite(Mg,Fe2+)2SiO4Iso. m3m (4/m 3 2/m) : Ia3d
14.21.4ClinoferrosiliteFe2+SiO3Mon. 2/m : P21/b
14.21.5Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
14.21.7 Magnesiocummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.8Grunerite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
14.21.9MinnesotaiteFe2+3Si4O10(OH)2Tric. 1 : P1
14.21.11Jimthompsonite(Mg,Fe)5Si6O16(OH)2Orth. mmm (2/m 2/m 2/m) : Pbca
14.21.12Clinojimthompsonite(Mg,Fe)5Si6O16(OH)2Mon. 2/m : B2/b

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 BalangeroiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ferraris, G. (1983) Balangeroite, un nuovo minerale da Balangero. Notiziario di Mineralogia e Paleontologia, April 1983.
Compagnoni, R., G. Ferraris, and L. Fiori (1983) Balangeroite, a new fibrous silicate related to gageite from Balangero, Italy. American Mineralogist, 68, 214-219.
Ferraris, G., M. Mellini, and S. Merlino (1987) Electron-diffraction and electron-microscopy study of balangeroite and gageite: crystal structures, polytypism, and fiber texture. American Mineralogist, 72, 382-391.
Belluso, E. and G. Ferraris (1991) New data on balangeroite and carlosturanite from alpine serpentinites. European Journal of Mineralogy, 3, 559-566.
Bonaccorsi, E., Ferraris, G., and Merlino, S. (2012) Crystal structure of 2M and 1A polytypes of balangeroite. Zeitschrift für Kristallographie, 227, 460-467.

Internet Links for BalangeroiteHide

Localities for BalangeroiteHide

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.
Italy (TL)
  • Piedmont
    • Metropolitan City of Turin
      • Balangero
Compagnoni, R., Ferraris, G., and Fiora, L. (1983) Balangeroite, a new fibrous silicate related to gageite from Balangero. American Mineralogist, 67, 214-219.; Prete, R. (1995) L'amiantifera di S. Vittore, Balangero, Torino. Rivista Mineralogica Italiana, 4/1995, 313-333.
      • Lanzo Torinese
Belluso, E., Compagnoni, R., Ferraris, G. (1995): Occurrence of asbestiform minerals in the serpentinites of the Piemonte zone, western Alps. “Giornata di studio in ricordo del Prof. Stefano Zucchetti”, Politecnico di Torino, Dipartimento Georisorse e Territorio, 12 Maggio 1994. Contribution volume, Tipolitografia Edicta, Torino, 57-66.
      • Varisella
Belluso, E., Compagnoni, R., Ferraris, G. (1995): Occurrence of asbestiform minerals in the serpentinites of the Piemonte zone, western Alps. “Giornata di studio in ricordo del Prof. Stefano Zucchetti”, Politecnico di Torino, Dipartimento Georisorse e Territorio, 12 Maggio 1994. Contribution volume, Tipolitografia Edicta, Torino, 57-66.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: February 21, 2020 10:40:20 Page generated: February 18, 2020 04:50:16
Go to top of page