Glassy
101Mount Cayley — The Mount Cayley volcanic complex in August 13, 2005. Summits left to right are Pyroclastic Peak and Mount Cayley. Elevation 2,377 m (7,799 ft) …
102Schmuckzikaden — Unbestimmte Art einer Schmuckzikade aus Indien Systematik Unterklasse: Fluginsekten (Pterygota) Ordnung …
103elastomer — elastomeric /i las teuh mer ik/, adj. /i las teuh meuhr/, n. Chem. an elastic substance occurring naturally, as natural rubber, or produced synthetically, as butyl rubber or neoprene. [1935 40; ELAST(IC) + O + Gk méros a part] * * * ▪ chemical… …
104pitchstone — /pich stohn /, n. a glassy volcanic rock having a resinous luster and resembling hardened pitch. [1775 85; trans. of G Pechstein. See PITCH2, STONE] * * * ▪ natural glass a volcanic glass with a conchoidal fracture (like glass), a resinous… …
105crystalline rock — Any rock composed entirely of crystallized minerals without glassy matter (matter without visible crystals). Intrusive igneous rocks (see intrusive rock) are nearly always crystalline; extrusive igneous rocks (see extrusive rock) may be partly to …
106glaz´er — glaze «glayz», verb, glazed, glaz|ing, noun. –v.t. 1. to put glass in; cover with glass. Pieces of glass cut to the right size are used to glaze windows and picture frames. 2. to make a smooth, glassy surface or glossy coating: »to glaze china,… …
107Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
108Ignimbrite — is a volcanic pyroclastic rock, often of dacitic or rhyolitic composition. Ignimbrite is the deposit of a pumice rich pyroclastic density current, or pyroclastic flow , a hot suspension of particles and gases that flows rapidly from a volcano,… …
109Variolite — Variolites (Latin varius , speckled, variegated ) are a group of dark green basic igneous rocks that, especially on weathered surfaces, exhibit pale colored spots, or spherules, that give them a pockmarked appearance. In some conditions these… …
110Crystallinity — Crystalline redirects here. It is not to be confused with Crystallin. For the song by Björk, see Crystalline (song). Crystallinity refers to the degree of structural order in a solid. In a crystal, the atoms or molecules are arranged in a regular …
