Hydroxycalciomicrolite, Ca1. 5Ta2O6 (OH) is a new microlite-group mineral found in the Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil. It occurs as isolated octahedral …
F Yavuz, V Yavuz - The Canadian Journal of Mineralogy …, 2024 - pubs.geoscienceworld.org
Abstract A Microsoft® Visual Basic program, WinPclclas, has been developed to calculate the chemical formulae of pyrochlore supergroup minerals (PSM) based on data obtained …
Abstract Hydroxynatropyrochlore,(Na, Сa, Ce) 2Nb2O6 (OH), is a new Na–Nb–OH-dominant member of the pyrochlore supergroup from the Kovdor phoscorite–carbonatite pipe, Kola …
R Miyawaki, K Momma… - The Canadian …, 2021 - pubs.geoscienceworld.org
ABSTRACT Hydroxykenopyrochlore,(□, Ce, Ba) 2 (Nb, Ti) 2O6 (OH, F), occurs in a weathered Nb-ore from alkaline-carbonatite complexes and pegmatites of the Brazilian …
C Biagioni, P Orlandi, F Nestola… - Mineralogical …, 2013 - pubs.geoscienceworld.org
The new mineral species oxycalcioroméite, Ca2 Sb 2 5+ O6O, has been discovered at the Buca della Vena mine, Stazzema, Apuan Alps, Tuscany, Italy. It occurs as euhedral …
Abstract Fluorcalciomicrolite,(Ca, Na,□) 2Ta2O6F, is a new microlite-group, pyrochlore supergroup mineral approved by the CNMNC (IMA 2012-036). It occurs as an accessory …
AV Kasatkin, SN Britvin… - Mineralogical …, 2020 - pubs.geoscienceworld.org
Abstract Oxybismutomicrolite, ideally [(Bi 3+,#) 2] Σ4+ Ta 2 O 6 O, where#= subordinate substituents, such as Na+, Ca 2+ and vacancy (□), is a microlite-group, pyrochlore …
Š Chládek, P Uher, M Novák, P Bačík… - Mineralogical …, 2021 - cambridge.org
Microlite-group minerals occur as common replacement products after primary and secondary columbite-group minerals (CGM) in albitised blocky K-feldspar and in coarse …