Shocked quartz is a form of quartz that has a microscopic structure that is different from normal quartz. Under intense pressure (but limited temperature), the crystalline structure of quartz will be deformed along planes inside the crystal. These planes, which show up as lines under a microscope, are called planar deformation features (PDFs), or shock lamellae.
Read more about Shocked Quartz: Discovery, Prevalence, Structure
Famous quotes containing the word shocked:
“I have very lately read the Prince of Abyssinia [Samuel Johnson’s Rasselas]MI am almost equally charmed and shocked at it—the style, the sentiments are inimitable—but the subject is dreadful—and, handled as it is by Dr. Johnson, might make any young, perhaps old, person tremble—O heavens! how dreadful, how terrible it is to be told by a man of his genius and knowledge, in so affectingly probable a manner, that true, real happiness is ever unattainable in this world!”
—Frances Burney (1752–1840)