Gabbro microcrystals, light micrograph

Gabbro microcrystals, light micrograph

C026/4183

Rights Managed

Caption

Gabbro microcrystals. Polarised light micrograph of a section through a sample of gabbro rock, showing the phaneritic (coarse-grained) microcrystals. Gabbro is a coarse-grained igneous rock, formed by the slow and gradual crystallisation of basaltic magma at large depth under the Earth's surface. Gabbros are distinguished from other plutonic rocks by their high content of plagioclase-feldspars and pyroxene. Magnification: x57, when printed 10 centimetres wide.

Release details

Model release not required. Property release not required.

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