- An
agpaitic rock is a
peralkaline igneous rock,
typically nepheline syenite or phonolite.
Characteristic minerals in
these rocks include complex silicates...
- short-wave
ultraviolet light.[citation needed]
Zektzerite is a
mineral of
agpaitic granites with arfvedsonite. It
occurs with
smoky quartz, microcline, okanoganite...
- It is
Mesoproterozoic in age,
about 1.16 Ga. It is the type
locality of
agpaitic nepheline syenite and
hosts a
variety of
unusual rock types. The complex...
- is a
rather rare
mineral occurring in
nepheline syenite intrusions and
agpaitic (peralkaline)
pegmatites and
granites as the
Golden Horn
batholith in Okanogan...
- are
either alkali (Na2O and K2O),
ferric iron (Fe2O3) and zirconium-rich
agpaitic rocks or alkali-poor, FeO-CaO-MgO-rich and zirconium-poor
miaskitic rocks...
- 2.8%). The
mineral was
discovered by V.I.
Gerasimovskii in
Lovozersky agpaitic m****if.
Named for
Mikhail Lomonosov –
famous Russian poet,
chemist and...
- and
uranium are
typically concentrated in lujavrite. Lujavrite, a dark
agpaitic nepheline syenite,
occurs as an
internal layer in the
north Ilimaussaq...
- of non-Russian origin. The
Lovozero M****if is
underlain by a
complex of
agpaitic to
hyperagpaitic rocks containing minerals as eudialyte,
loparite (an ore...
-
Lovozero Tundry m****if, Kola Peninsula, Russia,
where it is
found in ultra-
agpaitic,
hyperalkaline pegmatites.
Alluaivite contains relatively high amounts...
- and porphyrites. The most
mineralogically interesting are the ****ociated
agpaitic (alkali rich, low
aluminium and silicon) pegmatites, the
intrusive breccias...
