- than 50%
carbonate minerals.
Carbonatites may be
confused with
marble and may
require geochemical verification.
Carbonatites usually occur as
small plugs...
-
glimmerites and
carbonatites are well
mixed and
occur as
subvertical to
vertical laminated nearly pure
glimmerites and
nearly pure
carbonatites. The volume...
- to 13.1 ft) wide. They
consist of m****ive
carbonatites that are
mostly devoid of vesicles. The
carbonatite rocks have been
dated as
having cooled between...
-
silica content that may not be
extremely enriched in Fe and Mg, such as
carbonatites and ultrapot****ic
igneous rocks.
Intrusive ultramafic rocks are often...
-
granite and
syenite and in ****ociated pegmatites. It also
occurs in
carbonatites and in ****ociated
fenites and
other metasomatites. Bastnäsite has cerium...
-
Example from
central African occurrence. A. R. Woolley,
Alkaline Rocks and
Carbonatites of the World: Africa,
Geological Society of
London (May 2001), p. 139...
-
rifts are
characterized by
volcanoes that
erupt unusual alkali lava or
carbonatites.
Examples include the
volcanoes of the East
African Rift. A
volcano needs...
- with rare-earth
elements include carbonatites,
peralkaline granites (pegmatites), and
nepheline syenite.
Carbonatites crystallize from CO2-rich fluids...
- lithium, copper, gold, coal, iron ore, and
other minerals. The
Khanashin carbonatite in
Helmand Province contains 1,000,000
tonnes (980,000 long tons; 1,100...
- The
Panda Hill
Carbonatite is an
apatite and
pyrochlore bearing sovite carbonatite located in the
Mbeya District of Tanzania. The
deposit was
found in...
