-
example on the
lamproites at
Gaussberg in Antarctica, and lead-lead
isotope geochemistry have
revealed that the
source of
lamproites may be transition...
-
Olivine lamproites are ultrapot****ic,
peralkaline rocks rich in
volatiles (dominantly H2O). The
distinctive characteristic of
olivine lamproites is phlogopite...
-
composition of the
otherwise inaccessible mantle. Basalts, kimberlites,
lamproites and lamprophyres,
which have
their source in the
upper mantle,
often contain...
- Australia. Ellendale's
volcanic lamproite pipes intruded during the
Miocene age
between 22 and 19 Ma, and 48
lamproites have been
mapped within the northwest-trending...
-
largely composed of one of two
characteristic rock
types —
kimberlite or
lamproite.
These rocks reflect the
composition of the volcanoes' deep
magma sources...
-
compressional tectonics.
Instead of kimberlite, the host rock is
lamproite.
Lamproites with
diamonds that are not
economically viable are also
found in...
-
kimberlite and
lamproite occurrences occur as
volcanic and
subvolcanic diatremes and maars;
lavas are
virtually unknown.
Vents of
Proterozoic lamproite (Argyle...
- mantle.
Phlogopite is
encountered as a
primary igneous phenocryst within lamproites and lamprophyres, the
result of
highly fluid-rich melt
compositions within...
-
Petrology of
Lamproites. Boston, MA:
Springer US. doi:10.1007/978-1-4615-3788-5. ISBN 978-1-4613-6688-1. Murphy, D. T. (1 June 2002). "
Lamproites from Gaussberg...
- in
extrusive igneous rocks,
particularly those such as
kimberlites and
lamproites that have deep
mantle sources.
Anatase and
brookite are
found in the igneous...
