-
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...
-
amount of its quartz, into quartz-
syenites and
syenites. At the
margins of the
outcrop patches of
nepheline syenite occur;
usually the
nepheline is decomposed...
-
exposures of the
Beemerville Alkaline Complex consist of two
large nepheline syenite plutons; a
nearby diatreme (Rutan Hill); and
several other nearby and much...
- Kishangarh, 14% of the po****tion is
under 6
years of age.
Kishangarh Nepheline Syenite is
among the 32
National Geological Monuments in
India notified by Geological...
-
Garland Peak
Syenite, Red Hill complex, New Hampshire:
Camptonitic parental magmas and
differentiation to silica-oversaturated
syenites. Contributions...
- 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...
- feldspar.
Granitoids range from plagioclase-rich
tonalites to alkali-rich
syenites and from quartz-poor
monzonites to quartz-rich quartzolites. As only two...
-
heulandite in
veins and
cavities of
basaltic rocks,
sometimes in granites,
syenites, or gneisses. It is an
indicator mineral of the prehnite-pumpellyite metamorphic...
-
Occurrence within zoned bodies,
enveloped by
amphibole bearing syenites and quartz-
syenites rocks,
Broken and/or bent twin
lamellae in
plagioclase (albite)...
