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conchoidal fracture
English Wikipedia - The Free Encyclopedia
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Conchoidal fracture
Conchoidal fracture
describes the way that brittle materials break or
fracture
when they do not follow any natural
planes of separation
. Materials that break in this way include
quartz
,
flint
,
quartzite
,
jasper
and other fine-
grain
ed or
amorphous
materials with a composition of pure
silica
, such as
obsidian
and window
glass
.
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