spherulite
noun
a rounded aggregate of radiating crystals found in obsidian and other glassy igneous rocks.
spherulitic
-
a word derived from
spherulite.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Occasionally they show a fluxional banding; they may also be spherulitic or vesicular.
From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2 "Fairbanks, Erastus" to "Fens" by Various
Long-buried glassy lavas devitrify, or pass to a stony condition, under the unceasing action of underground waters; but their flow lines and perlitic and spherulitic structures remain to tell of their original state.
From The Elements of Geology by William Harmon Norton
At the base is a conglomerate containing pebbles from the formation below, the Ely greenstone, which is made up of altered basalts and andesites, generally in a schistose condition, but occasionally exhibiting spherulitic structures.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 "Aram, Eugene" to "Arcueil" by Various
Rhyolites are closely connected with the quartz-trachytes, but present a marked fluidal, spherulitic, or perlitic structure.
From Volcanoes: Past and Present by Edward Hull
These have the form of minute rods, needles or hairs, and are aggregated into feathery and spherulitic forms or skeletal crystals.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various
