Description
A dark-gray to black igneous rock composed of plagioclase feldspar, augite, and pyroxene with small quantities of magnetite and apatite. Diabase is found in Canada and along the east coast of the United States from New England to Virginia. It is used as a building and monument stone as well as for paving and cement aggregate.
Synonyms and Related Terms
dolerite; diabase (Port.); Diabas (Deut.); diabaas (Ned.)
Hazards and Safety
May contain free silica that can cause silicosis with inhalation.
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Last updated on: 7/6/2009 11:30:45 AM
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