Question

why Sedimentary rocks are generally not crystalline

Answer 1

Answer:

Crystals do fill what was originally pore space between grains in most sedimentary rocks, whether they are siliciclastics or carbonates. In some cases, crystalline solid is added to the rim of existing grains (e.g. the quartz overgrowths cementing pure sandstones) so those do not display distinct crystals.

Answer 2

Answer:

Crystals do fill what was originally pore space between grains in most sedimentary rocks, whether they are siliciclastics or carbonates. In some cases, crystalline solid is added to the rim of existing grains (e.g. the quartz overgrowths cementing pure sandstones) so those do not display distinct crystals.

Hope it helps