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conchoidal fracture is a
break or
fracture of a
brittle material that does not
follow any
natural planes of separation. Mindat.org
defines conchoidal...
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fractures are
recognized in mineralogy:
conchoidal, earthy, hackly,
splintery (or fibrous), and
uneven factures.
Conchoidal fracture breakage that resembles...
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chrysoprase has a
hardness of 6 to 7 on the Mohs
hardness scale and a
conchoidal fracture like flint. The best
known sources of
chrysoprase are Indonesia...
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Knapping is the
shaping of flint, chert, obsidian, or
other conchoidal fracturing stone through the
process of
lithic reduction to
manufacture stone tools...
- crystals, they
often break as
easily as gl**** and then make
conchoidal fractures.
Conchoidal fracture describes the way in
which materials break when they...
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detached from its core in a
Hertzian fashion, the
flake propagates in a
conchoidal manner from the
point of
impact or pressure,
usually producing a partial...
- isometric-hexoctahedral class. It has very poor
cleavage and is
brittle to
conchoidal fracture. It is
quite soft, with a Mohs
hardness of 1.5 to 2, and it has...
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other naturally occurring rocks,
obsidian breaks with a
characteristic conchoidal fracture. It was also
polished to
create early mirrors.
Modern archaeologists...
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penetration twins Cleavage Perfect {010}, imperfect {100}
Fracture Uneven to
conchoidal Mohs
scale hardness 6.5
Luster Vitreous,
pearly on
cleavage surfaces Streak...
- a
specific gravity of 1.9–2.1.
Lacking a
plane of cleavage, it has a
conchoidal fracture. The
transparent or
translucent mineraloid has a
globular structure...