vermicular quartz

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Myrmekite — describes a vermicular, or wormy, intergrowth of quartz in plagioclase. The intergrowths are microscopic in scale, typically with maximum dimensions less than 1 millimeter. The plagioclase is sodium rich, usually albite or oligoclase. These… … Wikipedia
Kaolin Deposits of Charentes Basin, France — The geological unit called Charentes basin is composed of Eocene and Oligocene deposits, laid above karstic limestone formations of the Campagnien, in the North of the Aquitaine Basin. The kaolin clays of Charentes belong to this mainly… … Wikipedia
Rock microstructure — includes the texture of a rock and the small scale rock structures. The words texture and microstructure are interchangeable, with the latter preferred in modern geological literature. However, texture is still acceptable because it is a useful… … Wikipedia
kaolin — kaolinic, adj. /kay euh lin/, n. a fine white clay used in the manufacture of porcelain. Also, kaoline. [1720 30; < F < Chin (Wade Giles) Kao1ling3, (pinyin) Gaoling mountain in Jiangxi province that yielded the first kaolin sent to Europe (gao… … Universalium

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