-
Fenite is a
metasomatic alteration ****ociated
particularly with
carbonatite intrusions and created, very rarely, by
advanced carbon dioxide alteration...
- host. The
fenites consist mainly of
perthitic microcline,
richterite amphibole, and pyroxene, but
there also are a wide
variety of
fenite types that...
- ****ociated pegmatites. It also
occurs in
carbonatites and in ****ociated
fenites and
other metasomatites. Bastnäsite has cerium,
lanthanum and
yttrium in...
-
earlier formed fenites.[citation needed] The
bottom periphery of caldera, 0.5 km wide, is
mostly built of
feldspathic rocks (
fenites), and
little or...
- lamprophyre,
ijolite and
other highly alkalic rocks. It is the type
locality for
fenite, a
metasomatic rock
commonly found around carbonatite and
alkali intrusives...
- Lev
Vladimirovich Tauson (1917–1989). It has also been
reported from a
fenite **** ****ociated with a
carbonatite complex in Sarambi, Concepción Department...
- alkaline-ultramafic
igneous complex near Libby, Montana. I:
Ultramafic rocks and
fenite".
Journal of Geology. 75 (5): 536–553. Bibcode:1967JG.....75..526B. doi:10...
- rich in
microcline and
albite in the
contact zone
between pegmatites and
fenites (metasomatic
rocks composed of
alkaline feldspar,
sodic pyroxene and alkaline...
- This
alteration ****emblage
produces a
unique rock
mineralogy termed a
fenite after its type locality, the Fen
Complex in Norway. The
alteration consists...
-
mafic rocks, very rarely,
creates fenite, a
metasomatic alteration caused particularly by
carbonatite intrusions.
Fenite alteration is known, but very restricted...
