- plagioclase).
Rocks with
greater than 90%
felsic minerals can also be
called leucocratic, from the Gr****
words for
white and dominance.
Felsite is a petrologic...
-
Leucocratic variety of
nepheline syenite from
Sweden (särnaite)...
-
composition is more
often used (dividing the
igneous rocks into felsic/
leucocratic, mafic/melanocratic and ultramafic). The term "silicic",
widely used...
-
Trondhjemite is a
leucocratic (light-colored)
intrusive igneous rock. It is a
variety of
tonalite in
which the
plagioclase is
mostly in the form of oligoclase...
- may
consist of only
quartz and
feldspar or the term may
refer to any
leucocratic (pale-coloured)
minor intrusion of that
grain size. They are ****ociated...
- Gneiss,
Meeberrie Gneiss,
Manfred Complex, and un****igned
polydeformed leucocratic gneisses and metasediments. The
Dugel Gneiss is
syenogranitic or monzogranitic...
-
alkalic pyroxene with
accessory titanite,
melanite and nepheline. It is a
leucocratic variety of
analcimite (a foidite).
Blairmorite has also been described...
-
lines and
shapes which are
reminiscent of writing.
Graphic granite is a
leucocratic granitic rock
consisting of
alkali feldspar with
exsolved quartz typically...
-
angular breccia with 5 to 10
percent leucocratic clasts bigger than 1 mm.
Sizes are
seriate with 10 to 20
percent leucocratic clasts in the
range of 0.5 to 1...
-
monzonite and ra****vi
granite Iron-rich diorite, gabbro, and
norite Leucocratic mafic rocks such as
leucotroctolite and
leuconorite Though co-eval, these...
