Question

Flint, a mineral that breaks to form sharp edges, has a fracture BEST described as A) conchoidal. B) earthy. C) hackly. D) splintery.

Answer 1

Flint is a mineral that has a fracture described as conchoidal or that of smooth with a rounded surface that resembles a conch shell, hence the term conchoidal. 

In contrast to another similar mineral called a chert which has a fracture described as splintery.