What kind of stone is Flint?

Question

Trying to classify a piece of stone that is "Flint"

Answer 1

Flint
- a form of chert (silica, SiO2) found in chalk deposits, flint is a chemical sedimentary rock that forms from the remains of silica-bodied organisms.

Chert: A very fine-grained sedimentary rock made of quartz. Usually made of millions of globular siliceous skeletons of tiny marine plankton called radiolarians. Black chert is called flint.

Answer 2

Flint (or flintstone) is a hard, sedimentary cryptocrystalline silicate form of the mineral quartz, categorized as a variety of chalcedony. Flint is usually dark-grey, blue, black, or deep brown in color, and often has a glassy appearance. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones.

The exact mode of formation of flint is not yet clear or agreed but it is thought that it occurs as a result of chemical changes in compressed sedimentary rock formations, during the process of diagenesis. One theory is that a gelatinous material fills cavities in the sediment, such as holes bored by crustaceans or molluscs and that this becomes silicified. This could certainly explain the complex shapes of flint that are found.

Answer 3

the stone is called flint rock a form or slate with compounds of sulfur and iron.

Answer 4

Flintstones, meet the Flintstones - they're a modern stone age family. From the Town of Bedrock....

Flinty stones as brittle aren't they? They can flake at the edges.

Peace!

Answer 5

I hear they're a modern stone age family

Answer 6

Kind of quartz, I think. Try asking on Science and Mathematics, rather than here.

Answer 7

It's a silicate.