-
relatively small concentrations (< 5%). It is
considered a granitoid. Some
syenites contain larger proportions of
mafic components and
smaller amounts of felsic...
-
occurs in
several nepheline-
syenites. A
great number of
interesting and rare
minerals have been
recorded from
nepheline syenites and the
pegmatite veins which...
-
Concord Gabbro-
Syenite Complex is a
paleozoic pluton located in
North Carolina. The
complex is
mainly composed of
gabbro and
syenite and is of the Silurian-Devonian...
-
Garland Peak
Syenite, Red Hill complex, New Hampshire:
Camptonitic parental magmas and
differentiation to silica-oversaturated
syenites. Contributions...
-
Occurrence within zoned bodies,
enveloped by
amphibole bearing syenites and quartz-
syenites rocks,
Broken and/or bent twin
lamellae in
plagioclase (albite)...
- history. The
story then
follows three female orogenes (Essun, Damaya, and
Syenite) from
across the Stillness.
Essun is a middle-aged
woman with two young...
-
minerals are
calcium carbonate (limestone),
building stone,
nepheline syenite, olivine, iron, titanium, and nickel. In 2017, the
Government Pension Fund...
-
Illimaussaq alkaline complex consists of
pegmatites such as nepheline,
syenites (especially
kakortokite or naujaite) and
sodalite (sodalite-foya). In I****ut...
-
article incorporates public domain material from
Feldspar and
nepheline syenite (PDF).
United States Geological Survey. Warr, L.N. (2021). "IMA–CNMNC approved...
-
varieties of
syenite, diorite, gabbro, etc., in
which feldspathoid minerals occur, and
indeed there are many
transitions between syenites of
ordinary type...
