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Light Colored Minerals with Non-Metallic Lusters,
and Harder than Glass

PHYSICAL PROPERTIES			MINERAL NAME, FORMULA
	Cleavage	[MORE PROPERTIES]	POTASSIUM FELDSPAR, KAlSi₃O₈
			PLAGIOCLASE FELDSPAR, (Na,Ca)(Al,Si)₄O₈, Na>Ca
	NO Cleavage	[MORE PROPERTIES]	OLIVINE, (Mg,Fe)₂SiO₄
			QUARTZ, SiO₂
			GARNET, (Mg,Fe,Ca)₃Al₂Si₃O₁₂

Does the mineral show cleavage? [Yes]---[NO]

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