- on the Earth's surface. A
xenocryst is an
individual foreign crystal included within an
igneous body.
Examples of
xenocrysts are
quartz crystals in a silica-deficient...
-
another magma;
these crystals are
called xenocrysts.
Diamonds found in
kimberlites are rare but well-known
xenocrysts; the
kimberlites do not
create the diamonds...
-
pyroxenes and/or
olivine phenocrysts are
often found in more
basic materials.
Xenocrysts or rock
fragments incorporated during the
violent eruptional and depositional...
- been
brought up from
buried continental crust as
fragments entrained as
xenocrysts within the basalt.
Interpretation of a
linear northwest–southeast gravity...
-
fragments (clasts) up to the size of watermelons. They are a
mixture of
xenocrysts and
xenoliths (minerals and
rocks carried up from the
lower crust and...
-
after the
hypothesized time of Earth's formation. In many
other areas,
xenocryst (or relict)
Hadean zircons enclosed in
older rocks indicate that younger...
-
melting and
generation that
makes kimberlites prone to
hosting diamond xenocrysts.
Despite its
relative rarity,
kimberlite has
attracted attention because...
- fractures.
Different from granite,
zircon is rare and, if present, it is as
xenocrysts. On the
other hand,
nepheline syenite gneiss contains abundant and large...
-
feature of
these rocks is the
presence of
large foreign crystals, or
xenocrysts, of
feldspar and of quartz.
Their forms are rounded,
indicating partial...
- from
depths of 150 km in the
mantle and are
mostly composed of
crustal xenocrysts, high
amounts of magnesium,
other trace elements, gases, and in some cases...
