IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
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 Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Lombardoite

This page is currently not sponsored. Click here to sponsor this page.
Lombardoite

Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Lombardoite

Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Lombardoite

Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Lombardoite

Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Lombardoite

Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Lombardoite

Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Hide all sections | Show all sections

About LombardoiteHide

The As (or arsenate) analogue of tokyoite. Two polytypes are known, one monoclinic (P21/m), one triclinic (P-1).

Compare 'Unnamed (Possible Ordered As-analogue of Tokyoite)'.


Classification of LombardoiteHide

IMA status:
Approved, Pending publication
Approval Year:
2016

Chemical Properties of LombardoiteHide

Formula:
Ba2Mn3+(AsO4)2(OH)
Elements listed:
As, Ba, H, Mn, O - search for minerals with similar chemistry

Crystallography of LombardoiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 7.8636(1) Å, b = 6.13421(8) Å, c = 9.1197(1) Å
β = 112.660(2)°
Ratio:
a:b:c = 1.282 : 1 : 1.487
Unit Cell V:
405.95 ų (Calculated from Unit Cell)

Type Occurrence of LombardoiteHide

Type Locality:
ⓘ Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Place of Conservation of Type Material:
Mineralogical collections of the Museo Regionale di Scienze Naturali, Sezione di Mineralogia, Petrografia e Geologia, via Giovanni Giolitti 36, I-10123 Torino, Italy, catalogue number M/U 17111

Synonyms of LombardoiteHide

Relationship of Lombardoite to other SpeciesHide

Member of:
Brackebuschite Supergroup
Other Members of this group:
ArsenbrackebuschitePb2Fe3+(AsO4)2(OH)Mon. 2/m : P2/m
ArsentsumebitePb2Cu(AsO4)(SO4)(OH)Mon. 2/m : P21/m
BearthiteCa2Al(PO4)2(OH)Mon. 2/m : P21/m
BrackebuschitePb2Mn3+(VO4)2(OH)Mon. 2/m : P21/m
BushmakinitePb2Al(PO4)(VO4)(OH)Mon. 2/m : P21/m
CalderónitePb2Fe3+(VO4)2(OH)Mon. 2/m : P21/m
CanosioiteBa2Fe3+(AsO4)2(OH)Mon. 2/m : P21/m
FeinglositePb2Zn(AsO4)2 · H2OMon. 2/m
FerribushmakinitePb2Fe3+(PO4)(VO4)(OH)Mon. 2/m : P21/m
GamagariteBa2Fe3+(VO4)2(OH)Mon. 2/m : P21/m
GoedkeniteSr2Al(PO4)2(OH)Mon. 2/m : P21/m
GrandaiteSr2Al(AsO4)2(OH)Mon. 2/m : P21/m
TokyoiteBa2Mn3+(VO4)2(OH)Mon. 2/m : P21/m
TsumebitePb2Cu(PO4)(SO4)(OH)Mon. 2/m : P21/m
Unnamed (possible ordered As-analogue of Tokyoite)Ba2Mn[(As,V)O4]2(OH)Mon. 2/m : P21/m

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 LombardoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cámara, F., Bosi, F., Ciriotti, M.E., Bittarello, E., Hålenius, U., Balestra, C. (2016): Lombardoite, IMA 2016-058. CNMNC Newsletter No. 33, October 2016, page 1141; Mineralogical Magazine: 80: 1135–1144.
Cámara, F. & Ciriotti, M. (2016): Polytypism, topological and crystalchemical relations among natrochalcite group and brackebuschite group minerals. EMC2016 - 2nd European Mineralogical Conference, 11-15 September 2016, Rimini, Italy, Abstracts Volume, S16-8.

Internet Links for LombardoiteHide

Localities for LombardoiteHide

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
    • Cuneo Province
      • Maira Valley
        • Canosio
          • Vallone della Valletta
Cámara, F., Ciriotti, M. (2016) Polytypism, topological and crystalchemical relations among natrochalcite group and brackebuschite group minerals. EMC2016 - 2nd European Mineralogical Conference, 11-15 September 2016, Rimini, Italy, Abstracts Volume, S16-8; Cámara, F., Bosi, F., Ciriotti, M.E., Bittarello, E., Hålenius, U., Balestra, C. (2016) Lombardoite, IMA 2016-058. CNMNC Newsletter No. 33, October 2016, page 1141; Mineralogical Magazine, 80, 1135–1144.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 15, 2018 13:53:10 Page generated: September 6, 2018 13:04:47
Go to top of page