Graphite
Graphite is a soft, black, metallic mineral composed of the element carbon. It is nontoxic and rubs off easily on rough surfaces, which is why graphite mixed with fine clay, rather than actua...
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Graphite
Carbon, in the forms of charcoal, graphite, and diamond, was one of the earliest elements known to man. Although discovered later than charcoal, graphite was prized early on for its ability t...
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Graphite
Graphite