Spherulites are most common in silica-rich glassy rocks. Sometimes they compose the whole mass; more usually they are surrounded by a glassy or felsitic base. When obsidians are devitrified, the spherulites are often traceable, though they may be more or less completely recrystallized or silicified. In the center of a … See more In petrology, spherulites are small, rounded bodies that commonly occur in vitreous igneous rocks. They are often visible in specimens of obsidian, pitchstone, and rhyolite as globules about the size of millet seed or rice grain, … See more Under the microscope the spherulites are of circular outline and are composed of thin divergent fibers that are crystalline as verified with polarized light. Between crossed Nicols, a black cross appears in the spherulite; its axes are usually perpendicular to one … See more Very large and cavernous spherulites are called lithophysae; they are found in obsidians at Lipari, in Yellowstone Park and other places. The characteristic radiate fibrous structure is usually conspicuous, but the fibers are interrupted by cavities that are often … See more Variolites are a type of radiate fibrous growth, resembling spherulites in many respects, consisting of minute feathery crystals spreading … See more Occasionally spherulites are found that are many centimeters and, even more rarely, up to two or three meters in diameter. Those spherulites, which are more than 20 centimeters in diameter, are called megaspherulites. Near Silver Cliff, Colorado, … See more Artificial glass sometimes crystallizes and contains spherulites that may be as large as a marble. As the glass has little similarity in chemical composition to volcanic obsidians, … See more WebSpherule is a related term of bubble. As nouns the difference between spherule and bubble is that spherule is a small sphere while bubble is a spherically contained volume of air or other gas, especially one made from soapy liquid. As a verb bubble is to produce bubbles, to rise up in bubbles (such in foods cooking).
Spherule - definition of spherule by The Free Dictionary
WebSpherule is a related term of particle. As nouns the difference between spherule and particle is that spherule is a small sphere while particle is a very small piece of matter, a fragment; especially, the smallest possible part of something. WebUne micrométéorite est une toute petite météorite, de taille généralement inférieure au centimètre et de masse inférieure au gramme . Les micrométéorites peuvent constituer une menace pour l'exploration spatiale. Le risque est particulièrement grand pour les satellites qui restent dans l'espace pour de longues périodes. by the twighlights last gleaming
Spherule vs Particle - What
WebFinister's Spherule - Wowpedia - Your wiki guide to the World of Warcraft Anime Wikis Sign In Register in: World of Warcraft common items, Quest items Finister's Spherule View source Finister's Spherule Quest Item Use: Merge the three spherules into a larger, more powerful gem. Contents 1 Source 2 As a quest objective 3 Patch changes WebSpherule is a related term of bubble. As nouns the difference between spherule and bubble is that spherule is a small sphere while bubble is a spherically contained volume of air or … Webspherule noun spher· ule ˈsfir-ül, ˈsfer-, -ˌyül : a thick-walled spherical structure enclosing endospores and occurring in the parasitic form of fungi of the genus Coccidioides … by the undersigned meaning