GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cleavage
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hardness
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fracture
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foliated
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Detailed explanation-1: -Minerals that are bonded with equal strength in all directions, such as quartz, have no cleavage, but instead fracture to form irregular surfaces. These minerals break along curved surfaces to form conchoidal fractures, similar to what happens when glass breaks.
Detailed explanation-2: -Uneven fracture is a rough surface or one with random irregularities. It occurs in a wide range of minerals including arsenopyrite, pyrite and magnetite.
Detailed explanation-3: -When a mineral breaks along random, irregular surfaces, it is called fracture. Some minerals break only by fracturing, while others both cleave and fracture. The best everyday example of fracture is broken glass, which fractures into smoothly curved fracture surfaces, called conchoidal fracture.