- four
minerals in the
allanite group, each
recognized as a
unique mineral:
allanite-(Ce),
allanite-(La),
allanite-(Nd), and
allanite-(Y),
depending on the...
- mineral.
Allanite and dollaseite-(Ce) have the same
general epidote formula and
contain metals of the
cerium group. In
external appearance allanite differs...
- granites,
whereas titanite (sphene) and
allanite are
considered diagnostic accessory minerals for I-type granites.
Allanite is
typically surrounded by radial...
-
Aldermanite Aleksite Alforsite Algodonite Aliettite Allabogdanite Allactite Allanite Allanpringite Allargentum Alleghanyite Alloclasite Alluaivite Alluaudite...
-
Tanzanite – Ca2Al3O(SiO4)(Si2O7)(OH)
Clinozoisite – Ca2Al3O(SiO4)(Si2O7)(OH)
Allanite – Ca(Ce,La,Y,Ca)Al2(FeII,FeIII)O(SiO4)(Si2O7)(OH) Dollaseite-(Ce) – CaCeMg2AlSi3O11F(OH)...
- (Na15Ca6(Fe,Mn)3Zr3SiO(O,OH,H2O)3 (Si3O9)2(Si9O27)2(OH,Cl)2) in
igneous rocks;
allanite ((REE,Ca,Y)2(Al,Fe2+,Fe3+)3(SiO4)3(OH)) in
pegmatites and carbonatites...
-
often contain significant rare-earth substitution: Aeschynite-(Y or Ce)
allanite apatite bastnäsite
britholite brockite cerite Dollaseite-(Ce) fluocerite...
- thorium-232. Some
minerals that
contain thorium include apatite, sphene, zircon,
allanite, mo****te, pyrochlore, thorite, and xenotime. Thorium-232 has a half-life...
-
contain up to
about 12%
thorium oxide. Mo****te
contains 2.5% thorium,
allanite has 0.1 to 2%
thorium and
zircon can have up to 0.4% thorium. Thorium-containing...
- form of dollaseite-(Ce) that at
first glimpse resembles an Mg
analogue of
allanite, now
known as dissakisite-(Ce).
Enami and Zang, Meyer,
Hanson and Pearce...
