6,031.54 kilometres (3,747.84 miles)
Flints-noun1.a hard stone, a form of silica resembling chalcedony but more opaque, less pure, and less lustrous.2.a piece of this, especially as used for striking fire.3.a chunk of this used as a...
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Flint is used to produce sparks to ignite powder.
Flint-silica: 1390 kg/cu.m