gray powder

• ashCombustion's powdery remains
• dustFine settled particles
• cementCalcium powder binding agent
• chalkSoft sedimentary writing stone
• gunpowderCombustible propellant mixture

residue · soot · flour · pigment · talc · charcoal · smoke · concrete · slate · cinder · graphite · lead · pewter · silver · dull · fine · gritty · milled