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Variolites are mafic, igneous, and
typically volcanic rocks, e.g. tholeiite,
basalt or komatiite, that
contain centimeter-scale
spherical or
globular structures...
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gabbro Unakite –
Multicoloured metamorphic rock – An
altered granite Variolite –
Igneous rocks which contain varioles Vogesite – Ultrapot****ic igneous...
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crystallizations when
melted and
cooled rapidly on a
microscopic slide.
Variolites are a type of
radiate fibrous growth,
resembling spherulites in many respects...
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Geologische Skizze van der Westküste
Schottlands (1871); Die
Struktur der
Variolite (1875);
Microscopical Petrography (in
Report of U.S. Geol. Exploration...
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Mangerite Novaculite Pietersite Pyrolite Ra****vi
granite Rhomb porphyry Rodingite Shonkinite Taconite Tachylite Teschenite Theralite Unakite Variolite Wad...
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larger than this.
These co****ly
spherulitic rocks p**** over into the
variolites by
increasing co****ness in the
fibers of
their spherulites,
which soon...
- emerged.
Among these since the late 19th
century geologists have
reported variolite, a
volcanic rock
similar to basalt, and diabase, also of lava
origin but...
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journals he
described the
granulite group, and
dealt with pegmatites,
variolites, eurites, the
ophites of the Pyrenees, the
extinct volcanoes of Central...
- v
Guberlinskhikh Gorakh" (in "Zapiski
Mineralnavo Obschestva"); "Die
Variolite von Yalguba" ("Tscherm. Mineral. Mitt." vi.); "Die
Mikroskopische Beschaffenheit...
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Journal of The
Geological Society,
February 1891, V. 47, pp. 329–342 "
Variolite of The Lleyn, and ****ociated
Volcanic Rocks," in The
Quarterly Journal...
