gabbro

Noun

Meaning

A name originally given by the Italians to a kind of serpentine, later to the rock called euphotide, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene (diallage) and labradorite, with sometimes chrysolite (olivine gabbro).

Synonyms

Hypernyms

Examples

Due to its variant nature, the term "gabbro" may be applied loosely to a wide range of intrusive rocks, many of which are merely "gabbroic". Source: Internet

The calcium rich plagioclase feldspar ( labradorite bytownite ) and pyroxene content vary between 10% - 90% in gabbro. Source: Internet

Etymology The term "gabbro" was used in the 1760s to name a set of rock types that were found in the ophiolites of the Apennine Mountains in Italy. Source: Internet

Gabbro Photomicrograph of a thin section of gabbro. Source: Internet

Ocellar (orbicular) varieties of gabbro can be used as ornamental facing stones, paving stones and it is also known by the trade name of 'black granite', which is a popular type of graveyard headstone used in funerary rites. Source: Internet

The quartz content in gabbro is less than 5% of total volume. Source: Internet

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