alb3843533

Hornblende Gabbro, Massachusetts

Gabbro is a coarse grained, equigranular igneous rock composed mainly of plagioclase feldspar (labradorite or bytownite) and orthoclase, a pyroxene such as augite, sometimes also nepheline and olivine, and a large percentage of hornblende (in hornblende gabbro). Rocks of this type are sometimes known as essexite. Gabbro forms as a result of the slow and undisturbed cooling of magma (molten rock) deep underground.

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Title: Hornblende Gabbro, Massachusetts

Caption: Gabbro is a coarse grained, equigranular igneous rock composed mainly of plagioclase feldspar (labradorite or bytownite) and orthoclase, a pyroxene such as augite, sometimes also nepheline and olivine, and a large percentage of hornblende (in hornblende gabbro). Rocks of this type are sometimes known as essexite. Gabbro forms as a result of the slow and undisturbed cooling of magma (molten rock) deep underground.

Credit: Album / Science Source / JOEL AREM

Releases: ? Model Release: No - ? Property Release: No
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Image size: 3841 × 2550 px | 28.0 MB

Print size: 32.5 × 21.6 cm | 1512.2 × 1003.9 in (300 dpi)

Keywords: AREM • COLLECTION • COOLING • EQUIGRANULAR • ESSEXITE • FEATURE • GABBRO • GEOLOGIA • GEOLOGIC • GEOLOGICAL • GEOLOGY • GRAIN • GRAINS • HISTORY • HORNBLENDE • IGNEOUS • MASSACHUSETTS • MINERALOGY • NECK • NECKS • NEPHELINE • ORTHOCLASE • PROPERTIES • REPORTAGE • ROCK • ROCKS • SALEM • SIZE • SPECIMEN • TEXTURE • THROAT