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Lamprophyres (from
Ancient Gr**** λαμπρός (lamprós) 'bright' and φύρω (phúrō) 'to mix') are uncommon, small-volume ultrapot****ic
igneous rocks primarily...
- rock Lamproite –
Mantle rock
expulsed to the
surface in
volcanic pipes Lamprophyre – Ultrapot****ic
igneous rocks – An ultramafic, ultrapot****ic intrusive...
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considered "ultramafic". Ultrapot****ic,
ultramafic igneous rocks such as
lamprophyre,
lamproite and
kimberlite are
known to have
reached the
surface of the...
- ****s or
sills consist either of phonolite, tinguaite,
lamprophyre micromalignite,
lamprophyre micromelteigite, or carbonatite. The
Beemerville Alkaline...
- A **** of
lamprophyre near the
Shiprock volcanic plug, New Mexico, that has
resisted the
erosion that
removed some of the
softer rock into
which the ****...
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otherwise inaccessible mantle. Basalts, kimberlites,
lamproites and
lamprophyres,
which have
their source in the
upper mantle,
often contain fragments...
-
northern apophysis, the
lamprophyres and the dark inclusions. The clear-cut
distinction of the
microgranites and the
lamprophyres from the
other facies...
-
phenocryst and groundm****
phase within ultrapot****ic
igneous rocks such as
lamprophyre, kimberlite, lamproite, and
other deeply sourced ultramafic or high-magnesian...
- equivalent, rhyolite.
Biotite is an
essential phenocryst in some
varieties of
lamprophyre.
Biotite is
occasionally found in
large cleavable crystals, especially...
-
occurrences are as m****es
adjacent to
ultramafic intrusives, ****ociated with
lamprophyre ****s and as
large crystals in pegmatites. It
commonly occurs as a detrital...
