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 was not at all shocked with this execution at the time. John died seemingly without much pain. He was effectually hanged, the rope having fixed upon his neck very firmly, and he was allowed to hang near three quarters of an hour; so that any attempt to recover him would have been in vain. I comforted myself in thinking that by giving up the scheme I had avoided much anxiety and uneasiness.”
—James Boswell (1740–1795)