1. Graphite:
Luster: Metallic
Color: Silver to gray
Hardness: 1-2
Cleavage or Fracture: Cleavage
Uses: Pencil lead, lubricants
Composition: C
2. Sulfur:
Luster: Non-metallic
Color: Yellow to amber
Hardness: 2
Cleavage or Fracture: Fracture
Uses: sulfuric acid
Composition: S
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