pressure-figure love

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from The Century Dictionary and Cyclopedia

  • n. In mineralogy, a figure produced in a section of some minerals by the pressure of a rather sharp point: thus, upon a sheet of mica the pressure-figure has the form of a six-rayed star, which is diagonal in position to the more easily obtained percussion-figure — that is, its rays are normal to edges of the prism and clinopinacoid.


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