Calciobetafite (of Mazzi & Munno)
A variety of Pyrochlore Group
This page is currently not sponsored. Click here to sponsor this page.
About Calciobetafite (of Mazzi & Munno)
Formula:
(Ca,Na)2(Nb,Ti)2(O,OH)7
Name:
For a mineral with the betafite structure with high CALCIum content.
A discredited mineral, earlier defined as a betafite. According to the new nomenclature of the Pyrochlore Supergroup (Atencio et al. 2010) "betafite" is defined as a calcium-rich and Ti-dominant pyrochlore. The type calciobetafite is Nb-dominant, not Ti-dominant, and belongs to the pyrochlore group).
Hogarth (1977) defined betafite as a uranium-rich Ti-dominant pyrochlore, hence the origin of calciobetafite, a calcium-dominant Ti-rich pyrochlore (Mazzi & Munno 1983). However, all published analytical data on (non-defect) betafite have Ca in excess of U [except the mineral from the Moon studied by Mokhov et al. (2008), which is oxyuranobetafite]. This renders the name calciobetafite redundant, and has the added effect of bringing members of the betafite group in line with the other groups (Atencio et al. 2010).
Hogarth (1977) defined betafite as a uranium-rich Ti-dominant pyrochlore, hence the origin of calciobetafite, a calcium-dominant Ti-rich pyrochlore (Mazzi & Munno 1983). However, all published analytical data on (non-defect) betafite have Ca in excess of U [except the mineral from the Moon studied by Mokhov et al. (2008), which is oxyuranobetafite]. This renders the name calciobetafite redundant, and has the added effect of bringing members of the betafite group in line with the other groups (Atencio et al. 2010).
Unique Identifiers
Mindat ID:
846 (as Calciobetafite (of Mazzi & Munno))
3316 (as Pyrochlore Group)
3316 (as Pyrochlore Group)
Long-form identifier:
mindat:1:1:846:0 (as Calciobetafite (of Mazzi & Munno))
mindat:1:1:3316:5 (as Pyrochlore Group)
mindat:1:1:3316:5 (as Pyrochlore Group)
IMA Classification of Calciobetafite (of Mazzi & Munno)
Discredited
Approval history:
Approved by IMA in 1982, as calciobetafite= an uranium-rich Ti-dominant pyrochlore.
Discredited by IMA 2012 (Atencio et al. 2010, 2012 IMA Report)
Discredited by IMA 2012 (Atencio et al. 2010, 2012 IMA Report)
Classification of Calciobetafite (of Mazzi & Munno)
18.4.10
18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
Chemistry of Calciobetafite (of Mazzi & Munno)
Mindat Formula:
(Ca,Na)2(Nb,Ti)2(O,OH)7
Element Weights:
Synonyms of Calciobetafite (of Mazzi & Munno)
Other Language Names for Calciobetafite (of Mazzi & Munno)
Common Associates
Associations Based on Photo Data:
| 1 photo of Calciobetafite (of Mazzi & Munno) associated with Wakefieldite-(La) | La(VO4) |
| 1 photo of Calciobetafite (of Mazzi & Munno) associated with Monazite Group | REE(PO4) |
| 1 photo of Calciobetafite (of Mazzi & Munno) associated with Cerianite-(Ce) | (Ce4+,Th)O2 |
| 1 photo of Calciobetafite (of Mazzi & Munno) associated with Quartz | SiO2 |
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.
Internet Links for Calciobetafite (of Mazzi & Munno)
mindat.org URL:
https://www.mindat.org/min-846.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for Calciobetafite (of Mazzi & Munno)
Reference List:
Hogarth, D. D. (1977) Classification and nomenclature of the pyrochlore group. American Mineralogist, 62 (5-6) 403-410
Localities for Calciobetafite (of Mazzi & Munno)
Showing 13 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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.
Germany | |
| Hentschel (1987) |
| Hentschel (1987) | |
| Hentschel (1987) |
| Blaß et al. (1992) |
Italy | |
| Mazzi et al. (1983) +1 other reference |
| Della Ventura et al. (2004) |
| |
| Knut Edvard Larsen collection (Collected by Rossini Carlo in 2001, analyzed by Prof. Caprilli in 2004) | |
| glommaguiden.com (n.d.) +3 other references | |
| Orlandi (1997) +2 other references |
Namibia | |
| Lohmeier et al. (2023) |
Romania | |
| Hirtopanu (2006) |
Sweden | |
| J.Langhof: REE-mineralogy in Mo-granite ... |
Monte Brusà Quarry, Luvigliano, Torreglia, Padova Province, Veneto, Italy