Novaculite

Novaculite forms light grey flatirons in the Marathon Uplift area of Texas.[1]

Novaculite, also called Arkansas Stone, is a microcrystalline to cryptocrystalline rock type that consists of silica in the form of chert or flint. It is commonly white to grey or black in color, with a specific gravity that ranges from 2.2 to 2.5. It is used in the production of sharpening stones. It occurs in parts of Arkansas, Oklahoma, and Texas, as well as in Japan and parts of the Middle East. The name novaculite is derived from the Latin word novacula, meaning a sharp knife, dagger, or razor,[2] in reference to its use in sharpening. The first recorded use of the term whetstone was in reference to a honing stone from Arkansas.[3]

  1. ^ Spearing, Darwin V. (1991). Roadside Geology of Texas. Mountain Press Publishing Company. ISBN 0-87842-265-X.
  2. ^ Wiktionary. "Novacula". Wikimedia Foundation. Retrieved 9 March 2018.
  3. ^ Cite error: The named reference nichols was invoked but never defined (see the help page).