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Tephrite is an igneous,
volcanic (extrusive) rock, with
aphanitic to
porphyritic texture.
Mineral content is
usually abundant feldspathoids (leucite or...
-
places basanite in the basanite/
tephrite field of the QAPF diagram.
Basanite is
further distinguished from
tephrite by
having a
normative olivine content...
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phonolite and
tephritePages
displaying wikidata descriptions as a
fallback – A
volcanic rock with a
composition between phonolite and
tephrite Picrite – Variety...
- as extinct. The
volcanic rocks range from
ankaramitic basanite through tephrite to
phonolite and some have ultra-pot****ic compositions,
which is unusual...
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Phonotephrite or phono-
tephrite is a
strongly alkaline volcanic rock with a
composition between phonolite and
tephrite. This
unusual igneous rock contains...
-
firstly erupted,
followed by a
tephritic phonolite and
finally a
phonolitic tephrite).
According to the
Smithsonian Institution's
Global Volcanism Program,...
- its
chemical composition. For example,
basanite is
distinguished from
tephrite by
having a high
normative olivine content.
Other refinements to the basic...
- (1853–1916). At
Vesuvius it
occurs as
alterations from
gypsum within leucite tephrite and as
fumarole deposits. It
occurs in dry lake beds in
California and...
- Nepheline-porphyry Es****ite and
Theralite Ijolite and
Missourite Effusive type or
Lavas Phonolite,
Leucitophyre Tephrite and
Basanite Nepheline-basalt, Leucite-basalt...
-
Gusev plains rocks lie near the
junction of basalt, picrobasalt, and
tephrite. The Irvine-Barager
classification calls them basalts. Plain's
rocks have...
