Variolites are mafic, igneous, and typically volcanic rocks, e.g. tholeiite, basalt or komatiite, that contain centimeter-scale spherical or globular structures...

gabbro Unakite – Multicoloured metamorphic rock – An altered granite Variolite – Igneous rocks which contain varioles Vogesite – Ultrapotassic igneous...

crystallizations when melted and cooled rapidly on a microscopic slide. Variolites are a type of radiate fibrous growth, resembling spherulites in many respects...

Mangerite Novaculite Pietersite Pyrolite Rapakivi granite Rhomb porphyry Rodingite Shonkinite Taconite Tachylite Teschenite Theralite Unakite Variolite Wad...

larger than this. These coarsely spherulitic rocks pass over into the variolites by increasing coarseness in the fibers of their spherulites, which soon...

v Guberlinskhikh Gorakh" (in "Zapiski Mineralnavo Obschestva"); "Die Variolite von Yalguba" ("Tscherm. Mineral. Mitt." vi.); "Die Mikroskopische Beschaffenheit...

Geologische Skizze van der Westküste Schottlands (1871); Die Struktur der Variolite (1875); Microscopical Petrography (in Report of U.S. Geol. Exploration...

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...

journals he described the granulite group, and dealt with pegmatites, variolites, eurites, the ophites of the Pyrenees, the extinct volcanoes of Central...

Journal of The Geological Society, February 1891, V. 47, pp. 329–342 "Variolite of The Lleyn, and Associated Volcanic Rocks," in The Quarterly Journal...