Ciprianiite
This page is currently not sponsored. Click here to sponsor this page.
About Ciprianiite
Formula:
Ca4[(Th,U),Ca]Σ2Al(Be0.5☐1.5)Σ2[B4Si4O22](OH)2
Formerly Ca4[(Th,U)(REE)]Al◻2(Si4B4O22)(OH,F)2; changed due to approval of the IMA 18-D proposal
Colour:
Brown
Lustre:
Vitreous
Crystal System:
Monoclinic
Member of:
Name:
Named by G. Della Ventura, P. Bonazzi, R. Oberti, and L. Ottolini in 2002 in honor of Curzio Cipriani (26 November 1927, Florence, Italy - 6 December 2007, Florence, Italy), Professor of Mineralogy and Head of the Museum of Mineralogy (later the Musuem of Natural History), at the University of Florence, for his contribution to mineral systematics. He was on the Commission of Museums of the International Mineralogical Association for more than twenty years and he founded the journal Museologia Scientifica.
Type Locality:
Hellandite group mineral. REE is primarily Ce and Nd, with minor La, Pr and Sm.
First mineral to combine Th and B as essential components (the second is UM1995-43-SiO:BTh).
First mineral to combine Th and B as essential components (the second is UM1995-43-SiO:BTh).
Classification of Ciprianiite
Approved
Approval Year:
2001
9.DK.20
9 : SILICATES (Germanates)
D : Inosilicates
K : Inosilicates with 5-periodic single chains
9 : SILICATES (Germanates)
D : Inosilicates
K : Inosilicates with 5-periodic single chains
Physical Properties of Ciprianiite
Vitreous
Colour:
Brown
Optical Data of Ciprianiite
Type:
Biaxial (-)
RI values:
nα = 1.680 nβ = 1.694 nγ = 1.708
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v strong
Chemical Properties of Ciprianiite
Formula:
Ca4[(Th,U),Ca]Σ2Al(Be0.5☐1.5)Σ2[B4Si4O22](OH)2
Formerly Ca4[(Th,U)(REE)]Al◻2(Si4B4O22)(OH,F)2; changed due to approval of the IMA 18-D proposal
Formerly Ca4[(Th,U)(REE)]Al◻2(Si4B4O22)(OH,F)2; changed due to approval of the IMA 18-D proposal
IMA Formula:
Ca4[(Th,U)Ca]Σ2Al(Be0.5◻1.5)Σ2[B4Si4O22](OH)2
Crystallography of Ciprianiite
Crystal System:
Monoclinic
Type Occurrence of Ciprianiite
Synonyms of Ciprianiite
Other Language Names for Ciprianiite
Relationship of Ciprianiite to other Species
Member of:
Other Members of this group:
| Ferri-mottanaite-(Ce) | Ca4Ce2Fe3+(Be1.5◻0.5)[Si4B4O22]O2 | Mon. 2/m : P2/b |
| Hellandite-(Ce) | (Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2 | Mon. 2/m |
| Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 | Mon. |
| Mottanaite-(Ce) | Ca4(Ce,REE)Σ2Al(Be1.5☐0.5)Σ2[B4Si4O22]O2 | Mon. 2/m |
| Tadzhikite-(Ce) | Ca4Ce3+2Ti◻(B4Si4O22)(OH)2 | Mon. |
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Ciprianiite associated with Hellandite |
Related Minerals - Nickel-Strunz Grouping
| 9.DK.05 | Babingtonite | Ca2(Fe,Mn)FeSi5O14(OH) | Tric. 1 : P1 |
| 9.DK.05 | Lithiomarsturite | LiCa2Mn2Si5O14(OH) | Tric. |
| 9.DK.05 | Manganbabingtonite | Ca2(Mn,Fe)FeSi5O14(OH) | Tric. |
| 9.DK.05 | Marsturite | NaCaMn3Si5O14(OH) | Tric. 1 : P1 |
| 9.DK.05 | Nambulite | LiMn2+4Si5O14(OH) | Tric. |
| 9.DK.05 | Natronambulite | (Na,Li)(Mn,Ca)4Si5O14OH | Tric. |
| 9.DK.05 | Rhodonite | Mn2+SiO3 | Tric. 1 |
| 9.DK.05 | Scandiobabingtonite | Ca2(Fe2+,Mn)ScSi5O14(OH) | Tric. |
| 9.DK.05 | Fowlerite | (Mn2+,Zn,Ca)SiO3 | |
| 9.DK.10 | Santaclaraite | CaMn4[Si5O14OH](OH) · H2O | Tric. |
| 9.DK.15 | Saneroite | NaMn2+5[Si5O14(OH)](VO3)(OH) | Tric. |
| 9.DK.20 | Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 | Mon. |
| 9.DK.20 | Tadzhikite-(Ce) | Ca4Ce3+2Ti◻(B4Si4O22)(OH)2 | Mon. |
| 9.DK.20 | Mottanaite-(Ce) | Ca4(Ce,REE)Σ2Al(Be1.5☐0.5)Σ2[B4Si4O22]O2 | Mon. 2/m |
| 9.DK.20 | Hellandite-(Ce) | (Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2 | Mon. 2/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 Ciprianiite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Della Ventura, G., Bonazzi, P., Oberti, R., Ottolini, L. (2002) Ciprianiite and mottanaite-(Ce), two new minerals of the hellandite group from Latium (Italy). American Mineralogist: 87: 739-744.
Oberti, R., Ventura, G.D., Ottolini, L., Hawthorne, F.C., Bonazzi, P. (2002) Re-definition, nomenclature, and crystal-chemistry of the hellandite group. American Mineralogist: 87: 745-752.
Grew, E.S., Anovitz, L.M. (2002) BORON: Mineralogy, Petrology and Geochemistry, second edition, 864 pages.
Mandarino, J.A. (2003) New minerals. Canadian Mineralogist: 41: 803-828.
Internet Links for Ciprianiite
mindat.org URL:
https://www.mindat.org/min-10799.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
Localities for Ciprianiite
symbol to view information about a locality.
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 | |
| Chukanov N. V., Allori R. (2008): Cancrinite-group minerals from the Sacrofano caldera, Rome, Latium, Italy. Mineralogical Almanac, 13c, 20-35; Чуканов Н. В., Аллори Р. (2008): Минералы группы канкринита из кальдеры Сакрофано (Лацио, Италия). Минералогический альманах, 13c, 20-35. |
| American Mineralogist (2002): 87: 739–744 |
Tre Croci, Vetralla, Viterbo Province, Lazio, Italy