Hackly fracture | Article about hackly fracture by The Free Dictionary
hackly fracture[¦hak·lē ′frak·chər]
A break in a mineral characterized by jagged irregular surfaces with sharp edges.
References in periodicals archive
The surfaces of most of the horizontal bands described above bear a hackly fracture
pattern in which the hackles are oriented vertically, extending from the top to the base of an individual band (Figure 4(a)).