page_title: Diabase
hierarchical_section_title: Diabase
caption_attribution_description: English: A sample of diabase with a polished surface on one side; the white minerals are plagioclase feldspar and the black are clinopyroxene.
context_page_description: Diabase is an igneous rock that is often blue in colour. It is rich in magnesium and iron, and originally found under the crust of volcanoes. Dikes and sills in igneous rock are often made of diabase.
context_section_description: Diabase (also known as dolerite or microgabbro) is an igneous rock that is often blue in colour. It is rich in magnesium and iron, and  originally found under the crust of volcanoes. Dikes and sills in igneous rock are often made of diabase.
caption: Diabase
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