- Tri****ic
Paleozoic Macuira Gneiss Ba****t Quartz-feldspathic,
amphibolitic &
biotitic gneisses, amphibolites,
micaceous schists, migmatites,
pegmatites & marbles...
- such as the
granite around Lamas de Olo. This
stone is
commonly rough,
biotitic,
porphyritic granite, but
there are
pockets of medium,
white igneous and...
- Ba****t
Complex Most of the ba****t
complex of the area is
dominated by
biotitic granite which is
light gray, very co****
grained and
occasionally pegmatitic...
- NaAlSi3O8), with
small quantities of
muscovite (common,
white or
potash mica),
biotitic (black mica, an iron rich
version of muscovite), and
hornblende (a black...
- 5000 to 20,000 feet, is
dominated by gray to dark
brown feldspathic and
biotitic metagreywacke, and mica schist. An Rb-Sr whole-rock
isochron of
about 2...
-
Kulazhin Series.
These rocks are
represented by
biotite gneisses and garnet-
biotitic gneiss about 5
kilometers thick. Most of the
upper Archean rocks include...
