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    • 1. a hard gray rock consisting of nearly pure chert, occurring chiefly as nodules in chalk: "houses built of brick and flint"

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  2. Flint - Wikipedia › wiki › Flint

    Flint is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Flint was widely used historically to make stone tools and start fires. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones.

  3. City of Flint

    FLINT, Michigan — Flint residents can safely dispose of non-commercial tires during the City of Flint’s free tire recycling event … Read More April 30, 2021 / Home Page , Mayor’s Office , News And Events , Press Releases , Public Works , Uncategorized

  4. Flint | Definition of Flint by Merriam-Webster › dictionary › flint

    Flint definition is - a massive hard dark quartz that produces a spark when struck by steel. How to use flint in a sentence. It Isn't Hard to Learn the Meaning of flint

    • Formation
    • History
    • Locations
    • Archaeology
    • Construction
    • Advantages
    • Properties
    • Composition
    • Uses
    • Etymology
    • Nomenclature
    • Name
    • Geology

    Flint often forms as nodules in sedimentary rocks such as chalk and marine limestones. The nodules can be dispersed randomly throughout the rock unit but are often concentrated in distinct layers. Some rock units form through the accumulation of siliceous skeletal material. These can recrystallize to form a layer of bedded flint.

    Flint has been used by humans to make stone tools for at least two million years. [1] The conchoidal fracture of flint causes it to break into sharp-edged pieces. Early people recognized this property of flint and learned how to fashion it into knife blades, projectile points, scrapers, axes, drills, and other sharp tools.

    One of the most important localities for flint in eastern North America is Flint Ridge in eastern Ohio. Native Americans discovered this deposit and produced flint from hundreds of small quarries along the ridge. [2] This Ohio Flint occurred in distinctive colors and was treasured by Native Americans.

    Perhaps the most impressive story about flint is that of the ancient mining complexes that were built in what is now England during Neolithic times. These excavations began about 4000 BC and continued until the widespread use of metals about 2,000 years later. [4] One flint mining complex of particular note was Grime's Graves located near Brandon, England. Here ancient miners dug shafts down through 40 feet of Cretaceous chalk to a layer of high-quality flint below. Each shaft was several feet in diameter and required the removal of about 2,000 tonnes of chalk. Most of the digging was done without metal tools, using red deer antlers as picks. Each shaft required a team of workers and took several months to construct. [5]

    About 60 tons of flint could be removed from each of these pits and the short horizontal excavations that followed the high-quality flint layer at the base. Starting about 3000 BC until about 1900 BC, these miners built over 400 shafts over an area of about 100 acres and removed thousands of tons of flint. [6]

    Although these mining operations were amazing feats of engineering, just as impressive was the geological understanding of the workers. They knew that the flint was below the ground even though it did not outcrop anywhere in the immediate area. They also knew that the highest quality flint layer was below lower quality zones that were encountered during the early digging.

    Another important property of flint is its ability to generate sparks of hot material when it is struck against steel. This property allows flint to be used as a fire-starter. Skilled people can use a piece of flint, a piece of steel, and a little tinder to quickly start a fire.

    Most people have heard of a gem material called \\"jasper\\". Jasper is an opaque variety of cryptocrystalline quartz. It obtains its color and opacity from a large amount of included mineral particles. Flint and jasper are similar materials and both are varieties of a gem material known as \\"chalcedony\\".

    Where flint is abundant it is sometimes used as a construction material. It is very durable and resists weathering better than almost any other natural stone. It is common to see walls, homes, and larger buildings that are built partially or entirely with flint as a facing stone in southern England and many parts of Europe.

    Flint is a microcrystalline variety of quartz. Materials of this description have been given a wide variety of names, including chert, jasper, agate, and chalcedony. Most geologists use the word \\"chert\\" instead of \\"flint\\".

    Some people believe that the name \\"flint\\" should be reserved for dark-colored chert that formed as nodules in limestone or chalk. Some archaeologists believe that the name \\"flint\\" should only be used when the material has been fashioned into an artifact.

    The name \\"flint\\" has been so closely associated with starting fires that man-made materials used to produce sparks in cigarette lighters and survival kits have been given the name \\"flints.\\"

    \\"Novaculite\\" is a metamorphic rock that is similar to flint. It has a sedimentary origin, just like flint, but diagenesis and metamorphism have increased the size of the quartz microcrystals. It has been used for thousands of years for making sharp tools and weapons. Some specimens have a texture that make them useful as a sharpening stone.

  5. Flint | Definition of Flint at › browse › flint

    Flint definition, a hard stone, a form of silica resembling chalcedony but more opaque, less pure, and less lustrous. See more.

  6. Home | Flint Energies

    Flint Energies’ service area has more than 6,750 miles of distribution lines that bring safe and dependable electric power to more than 89,500 meters. When you call to report trouble, day or night, our system operators are available to answer your call 24 hours a day, with immediate service crew dispatch.

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  8. Flint, Michigan - Wikipedia › wiki › Flint,_Michigan

    Flint is the largest city and seat of Genesee County, Michigan, United States.Located along the Flint River, 66 miles (106 km) northwest of Detroit, it is a principal city within the region known as Mid Michigan.

    • United States
    • Genesee
    • 751 ft (229 m)
    • Michigan
  9. Apr 12, 2021 · Flint, also known as chert, is a type of sedimentary rock that has many uses. It was once commonly used to form rudimentary tools like knives and spear tips. Flint is often used by outdoorsmen to create sparks for a fire when it is struck...

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