Changes

[[Image:Volcanic_ash.jpg|thumb|300px|Volcanic ash collected in Randle, [[Washington]], located about 40 km NNE of [[Mount St. Helens]].]]'''Volcanic ash''' consists of [[rock]], [[mineral]], and volcanic [[glass]] fragments smaller than 2 mm (0.1 inch) in diameter, which is slightly larger than the size of a pinhead. Volcanic ash is not the same as the soft fluffy ash that results from burning wood, leaves, or paper. It is hard, does not dissolve in water, and can be extremely small--ash particles less than 0.025 mm (1/1,000th of an inch) in diameter are common.

[[Image:Volcanic_ash.jpg|thumb|300px|Volcanic ash collected in Randle, [[Washington]], located about 40 km NNE of [[Mount St. Helens]].]]'''Volcanic ash''' consists of [[rock]], [[mineral]], and volcanic [[glass]] fragments smaller than 2 mm (0.1 inch) in diameter, which is slightly larger than the size of a pinhead. Volcanic ash is not the same as the soft fluffy ash that results from burning wood, leaves, or paper. It is hard, does not dissolve in water, and can be extremely small—ash particles less than 0.025 mm (1/1,000th of an inch) in diameter are common.

Ash is extremely abrasive, similar to finely crushed window glass, mildly corrosive, and electrically conductive, especially when wet.

Ash is extremely abrasive, similar to finely crushed window glass, mildly corrosive, and electrically conductive, especially when wet.