-
Illite, also
called hydromica or hydromuscovite, is a
group of
closely related non-expanding clay minerals.
Illite is a
secondary mineral precipitate,...
- (especially in mid-to
early Paleozoic shales)
illites predominate. The
transformation of
smectite to
illite produces silica, sodium, calcium, magnesium...
-
Illite crystallinity is a
technique used to
classify low-grade
metamorphic activity in
pelitic rocks.
Determining the "
illite crystallinity index" allows...
-
Weathering of the same kind of rock
under alkaline conditions produces illite.
Smectite forms by
weathering of
igneous rock
under alkaline conditions...
-
presence of
smectite clay
minerals on the
planet Mars.
Illite group which includes the clay-micas.
Illite is the only
common mineral in this group. Chlorite...
- when the
dominant clay
species is
illite (a non-swelling clay). However, in pure clay mineralogy, the term
illite is more
appropriate than "K-bentonite"...
- 15–30
Clays — over 30
Sesquioxides — 0–3
Kaolinite — 3–15
Illite — 25–40
Montmorillonite — 60–100
Vermiculite (similar to
illite) — 80–150
Humus — 100–300...
-
converted to graphite.
Slate is
mainly composed of the
minerals quartz,
illite, and chlorite,
which account for up to 95% of its composition. The most...
- less
stable minerals have been
weathered to clay
minerals like kaolinite,
illite or smectite.
Among the
three major types of rock,
fossils are most commonly...
-
kaolinite decreases,
while the
proportion of
other clay
minerals such as
illite (in
cooler climates) or
smectite (in
drier climates) increases. Such climatically...
