dodecahedral cleavage इन हिंदी

dodecahedral: द् वा दशफलकी

cleavage: दरार भेदन विदरण

	1.	Octahedral cleavage ( four directions ) is present in fluorite and diamond, and sphalerite has six-directional dodecahedral cleavage.
	2.	But here again, its low hardness ( 2.5 4 ) and perfect dodecahedral cleavage preclude sphalerite's wide use in jewelry.

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