Talc crystal structure,molecular model. Talc is the name for the mineral hydrated magnesium silicate (Mg3Si4O10(OH)2). Silicate ions comprise a central silicon ion (pink) surrounded by four oxygen atoms (red). Magnesium ions are green,and hydroxide ions (OH-) are blue. Talc is the softest mineral on Moh's scale of mineral hardness | |
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