Lombardoite
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About Lombardoite
Formula:
Ba2Mn3+(AsO4)2(OH)
Crystal System:
Monoclinic
Member of:
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)'.
Compare 'Unnamed (Possible Ordered As-analogue of Tokyoite)'.
Classification of Lombardoite
Approved, Pending publication
Approval Year:
2016
Chemical Properties of Lombardoite
Formula:
Ba2Mn3+(AsO4)2(OH)
Crystallography of Lombardoite
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)°
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 Lombardoite
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 Lombardoite
Relationship of Lombardoite to other Species
Member of:
Other Members of this group:
| Arsenbrackebuschite | Pb2Fe3+(AsO4)2(OH) | Mon. 2/m : P2/m |
| Arsentsumebite | Pb2Cu(AsO4)(SO4)(OH) | Mon. 2/m : P21/m |
| Bearthite | Ca2Al(PO4)2(OH) | Mon. 2/m : P21/m |
| Brackebuschite | Pb2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Bushmakinite | Pb2Al(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
| Calderónite | Pb2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Canosioite | Ba2Fe3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Feinglosite | Pb2Zn(AsO4)2 · H2O | Mon. 2/m |
| Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
| Gamagarite | Ba2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Goedkenite | Sr2Al(PO4)2(OH) | Mon. 2/m : P21/m |
| Grandaite | Sr2Al(AsO4)2(OH) | Mon. 2/m : P21/m |
| Tokyoite | Ba2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Tsumebite | Pb2Cu(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 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.
References for Lombardoite
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 Lombardoite
mindat.org URL:
https://www.mindat.org/min-50252.html
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Localities for Lombardoite
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The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Italy (TL) | |
| 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. |
Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy