A mining company is interested in monazite, a mineral substance that forms in igneous rock in Earth’s interior. They think they found a lot of monazite in a sedimentary rock formation at Earth’s surface. Could this really be monazite? If so, how could the monazite have become part of sedimentary rock?

Yes, it could have been monazite.

Monazite could have become part of sedimentary rock because it is formed during the metamorphosim of clastic sedimentary rocks. It is a resistant minerals that is found in weathered rocks debris which become concentrated and they are part of the soils and sediments found near weathered rocks.

Explanation:

Monazites are phosphate minerals that are found im small grains as accessory in igneous rocks and sedimentary rocks. It is formed during the crystallization of igneous rock and metamorphosim of clastic sedimentary rocks.

It is a resistant minerals that found in weathered rocks debris and become concentrated in sediments near weathered rocks.

i don't know what the picture looks like but i can take a guess and say maybe basidiomycetes?

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.