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Tephrite is an igneous,
volcanic (extrusive) rock, with
aphanitic to
porphyritic texture.
Mineral content is
usually abundant feldspathoids (leucite or...
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Thephritis Wiedemann, 1828 (Missp.)
Tephrytis Robineau-Desvoidy, 1830 (Missp.)
Tephrites Gray, 1832 (Missp.)
Trephritis Griffith & Pidgeon, 1832 (Missp.) Tephritus...
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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...
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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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places basanite in the basanite/
tephrite field of the QAPF diagram.
Basanite is
further distinguished from
tephrite by
having a
normative olivine content...
- its
chemical composition. For example,
basanite is
distinguished from
tephrite by
having a high
normative olivine content.
Other refinements to the basic...
- and
tephrites but less than
basaltic andesite.
Basalt has a
lower total content of
alkali oxides than
trachybasalt and most
basanites and
tephrites. Basalt...
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silica content can
range from
ultramafic (nephelinites,
basanites and
tephrites) to
felsic (trachytes). They are more
likely to be
generated at greater...
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silica content can
range from
ultramafic (nephelinites,
basanites and
tephrites) to
felsic (trachytes). They are more
likely to be
generated at greater...
