Science
Cleavage planes dictate how minerals shatter
HERE’S THE INTERESTING PART
Minerals do not just break randomly; they possess cleavage, which is the tendency to consistently break along specific flat planes of structural weakness. Hit a piece of mica, and it peels into impossibly thin sheets. Hit a piece of galena, and it shatters into perfect little cubes. Even in pure destruction, geology is obsessively organized.
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