Ciprianiite
This page is currently not sponsored. Click here to sponsor this page.
Formula:
Ca4[(Th,U)(REE)]Al◻2(Si4B4O22)(OH,F)2
System:
Monoclinic
Colour:
Brown
Lustre:
Vitreous
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.
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.
Surface Relief:
High
Dispersion:
r > v strong
Chemical Properties of Ciprianiite
Formula:
Ca4[(Th,U)(REE)]Al◻2(Si4B4O22)(OH,F)2
IMA Formula:
Ca4(Th,REE)2Al(B4Si4O22)(OH)2
Crystallography of Ciprianiite
Crystal System:
Monoclinic
Type Occurrence of Ciprianiite
Relationship of Ciprianiite to other Species
Member of:
Other Members of Group:
| Hellandite-(Ce) | (Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2 |
| Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 |
| Mottanaite-(Ce) | Ca4(CeCa)AlBe2(Si4B4O22)O2 |
| Tadzhikite-(Ce) | Ca4Ce23+Ti◻(B4Si4O22)(OH)2 |
| 9.DK.05 | Babingtonite | Ca2(Fe,Mn)FeSi5O14(OH) |
| 9.DK.05 | Lithiomarsturite | LiCa2Mn2Si5O14(OH) |
| 9.DK.05 | Manganbabingtonite | Ca2(Mn,Fe)FeSi5O14(OH) |
| 9.DK.05 | Marsturite | NaCaMn3Si5O14(OH) |
| 9.DK.05 | Nambulite | (Li,Na)Mn4Si5O14(OH) |
| 9.DK.05 | Natronambulite | (Na,Li)(Mn,Ca)4Si5O14OH |
| 9.DK.05 | Rhodonite | CaMn3Mn(Si5O15) |
| 9.DK.05 | Scandiobabingtonite | Ca2(Fe2+,Mn)ScSi5O14(OH) |
| 9.DK.05 | Fowlerite | CaMn3Mn(Si5O15) |
| 9.DK.10 | Santaclaraite | CaMn4[Si5O14OH](OH) · H2O |
| 9.DK.15 | Saneroite | NaMn52+[Si5O14(OH)](VO3)(OH) |
| 9.DK.20 | Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 |
| 9.DK.20 | Tadzhikite-(Ce) | Ca4Ce23+Ti◻(B4Si4O22)(OH)2 |
| 9.DK.20 | Mottanaite-(Ce) | Ca4(CeCa)AlBe2(Si4B4O22)O2 |
| 9.DK.20 | Hellandite-(Ce) | (Ca,REE)4Ce2Al□2(B4Si4O22) (OH)2 |
Other Names for Ciprianiite
Name in Other Languages:
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:
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.
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
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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, Vico Lake, Viterbo Province, Latium, Italy