Lath-shaped
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eaves lath — Eaves Eaves, n. pl. [OE. evese, pl. eveses, AS. efese eaves, brim, brink; akin to OHG. obisa, opasa, porch, hall, MHG. obse eaves, Icel. ups, Goth. ubizwa porch; cf. Icel. upsar dropi, OSw. ops[ a] drup water dropping from the eaves. Probably… … The Collaborative International Dictionary of English
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… … Universalium
Agrellite — Infobox mineral name = Agrellite category = boxwidth = boxbgcolor = caption = formula = |NaCa2 [FSi4O10 molweight = color = White, grayish white, greenish white habit = Lath shaped like a small, thin plaster lath, rectangular in shape system =… … Wikipedia
ophitic — adjective Etymology: ophite serpentine (stone), from Latin ophites, from Greek ophitēs (lithos), from ophitēs snakelike, from ophis snake; akin to Sanskrit ahi snake and probably to Latin anguis snake, anguilla eel, Greek enchelys eel, echidna… … New Collegiate Dictionary
trachytic — adjective Date: 1827 of or relating to a texture of igneous rocks in which lath shaped feldspar crystals are in almost parallel lines … New Collegiate Dictionary
Labradorite — ((Ca,Na)(Al,Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. It is usually defined as having %An (anorthite) between 50 and 70. The specific gravity ranges from 2.71 to 2.74. The streak is white, like… … Wikipedia
Spherulite — Spherulites, in petrology, 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, with a duller… … Wikipedia
Phenocryst — A phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of a porphyritic igneous rock. Phenocrysts often have euhedral forms either due to early growth within a magma or by post… … Wikipedia
Diabase — /ˈd … Wikipedia
