Flint
Flint is a hard, sedimentary cryptocrystalline form of the mineral quartz, categorized as a variety of chert. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. Inside the nodule, flint is usually dark grey, black, green, white, or brown in colour, and often has a glassy or waxy appearance. A thin layer on the outside of the nodules is usually different in colour, typically white and rough in texture. From a petrological point of view, "flint" refers specifically to the form of chert which occurs in chalk or marly limestone. Similarly, "common chert" (sometimes referred to simply as "chert") occurs in limestone.
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Famous quotes containing the word flint:
“He believes without reservation that Kentucky is the garden spot of the world, and is ready to dispute with anyone who questions his claim. In his enthusiasm for his State he compares with the Methodist preacher whom Timothy Flint heard tell a congregation that “Heaven is a Kentucky of a place.””
—For the State of Kentucky, U.S. public relief program (1935-1943)
“I see you boys of summer in your ruin.
Man in his maggot’s barren.
And boys are full and foreign in the pouch.
I am the man your father was.
We are the sons of flint and pitch.
O see the poles are kissing as they cross.”
—Dylan Thomas (1914–1953)
“Without passion man is a mere latent force and possibility, like the flint which awaits the shock of the iron before it can give forth its spark.”
—Henri-Frédéric Amiel (1821–1881)