WebWhen flint forms biochemically, it is technically mostly made of very small fossils. These fossils are too small to see without high-powered magnification, but they are fossils … WebThe formation of flint is a complex process which began in the chalk seas millions of years ago and is, summarised below: Organisms such as sponges (on the macro scale) …

Flint - Wikipedia

WebFlint is a microcrystalline rock made of silica and is considered to have begun forming soon after the deposition of Chalk. The silica replaces the original Chalk carbonate … protect against anti-competitive

Chert and flint mineral Britannica

WebEarth Science Flint, a type of rock found in or near deposits of chalk, was formed between 60 and 95 million years ago by accumulating deposits of silica (silicon dioxide) in oceans. … WebA few months later, Flint told its residents that their water had high levels of organic molecules called trihalomethanes. These molecules are similar to methane molecules … Webchert and flint, very fine-grained quartz (q.v.), a silica mineral with minor impurities. Several varieties are included under the general term chert: jasper, chalcedony, agate (qq.v.), flint, porcelanite, and novaculite. Flint is gray to black and nearly opaque (translucent brown in thin splinters) because of included carbonaceous matter. Opaque, dull, whitish to pale … resetting an heirloom diamond