Question

Metamorphic rocks are considered good for use as building stone. efine the following:​

Answer 1

Answer:

It should be noted that not all metamorphic

rocks make good construction materials.

The previously mentioned rocks contain

large amount of quartz, making then hard

and resistant to chemical weathering

Orthogneisses, gneiss from an igneous rock,

can often times be just as strong as any

granite or diorite. But, many metamorphic

rocks, after enjoying deformation and

metamorphism, are left with many fractures

and veins, which leave then weaker.

Mylonites can be this way. Schists and

phyllites usually have a higher mica

content (biotite, muscovite, and chlorite).

These minerals are platy and soft. Schists

themselves are very platy and don't make

great dimension stone or aggregate.