- In the
Tombstone Mountains of Yukon, Canada, the
mineral is
found in a
syenitic glacial erratic boulder. In the
Alban Hills of
Italy it is
found in volcanic...
- Trentino. A
variety known as
beaumontite occurs as
small yellow crystals on
syenitic schist near Baltimore, Maryland. Warr, L.N. (2021). "IMA–CNMNC approved...
- Hill
Syenite ("Red Hill
Syenitic Complex", "Red Hill
Alkaline Igneous Complex", "Red Hill Intrusion", or "Red Hill
Layered syenitic complex") is a layered...
- in
gneisses and amphibolites, and in
laccoliths and ****s
derived from
syenitic and
gabbroic magmas, and in
contact metamorphic zones. It is a hydrothermal...
- it was
concluded that the
Arkenu structures are
stocks of
porphyritic syenitic that have
intruded the
Nubia Formation to form
rather simple and eroded...
-
peninsula which hosts its
largest outcrop, is
predominantly Palaeoproterozoic syenitic gneiss. It lies
unconformably beneath the
Colonsay Group. At the time this...
-
extends in two
small bands southward in the
western part of the city.
Syenitic gneiss accounts for
about 40%
covering the southern,
western and north-eastern...
-
suggesting a
hybrid origin involving ****imilation of
gabbro by high-temperature
syenitic magma.
Igneous rocks with
shoshonitic chemical characteristics must be:...
- on
Islay consist of two main types, a
dominant medium to co****-grained
syenitic gneiss,
which is cut by
large intrusions of
gabbro (now deformed). Between...
- mid-Cretaceous. The ore is a
result of
hydrothermal alteration of the nepheline-
syenitic rocks; it has also been
weathered out and
concentrated in
paleoplacer deposits...
