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Leucite (from the Gr**** word
leukos meaning white) is a rock-forming
mineral of the
feldspathoid group, silica-undersaturated and
composed of pot****ium...
- olivine.
Unless potash is high and
silica relatively low,
leucite will not be present, for
leucite does not
occur with free quartz. Nepheline, likewise, is...
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Leucitite or
leucite rock is an
igneous rock
containing leucite. It is scarce, many
countries such as
England being entirely without them. However, they...
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analogy of
certain leucite syenites which are
known in Arkansas, it is very
probable that
these spots represent original leucites which have been changed...
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Minerals typical of
lamproites include:
forsteritic olivine; high iron
leucite; titanium-rich aluminium-poor phlogopite; pot****ium- and titanium-rich...
- the
German chemist Martin Klaproth discovered "potash" in the
minerals leucite and lepidolite, and
realized that "potash" was not a
product of
plant growth...
- olivine-rich
melilitites through leucites to nephelinites, containing, in
various proportions mainly the
minerals nepheline,
leucite, melilite, kalsilite, and...
- of
production Indirect veneers Direct veneers Materials Feldspathic and
leucite-reinforced
ceramics Lithium disilicate ceramics Acrylic (no
longer in use...
- gl****-based
systems (mainly silica) with fillers,
usually crystalline (typically
leucite or, more recently,
lithium disilicate)
Composition category 3 – crystalline-based...
-
compared to
augite in
tholeiitic basalt.
Minerals such as
alkali feldspar,
leucite, nepheline, sodalite,
phlogopite mica, and
apatite may be
present in the...
