{"id":1751,"date":"2014-09-16T16:27:51","date_gmt":"2014-09-16T16:27:51","guid":{"rendered":"https:\/\/waltonsons.com\/wp\/?page_id=1751"},"modified":"2014-10-31T05:20:38","modified_gmt":"2014-10-31T05:20:38","slug":"gabbro","status":"publish","type":"page","link":"https:\/\/waltonsons.com\/?page_id=1751","title":{"rendered":"Gabbro"},"content":{"rendered":"

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\"Gabbro<\/a><\/p>\n

Gabbro refers to a large group of dark, coarse-grained, intrusive mafic igneous rocks chemically equivalent to basalt.\u00a0 Basalt and gabbro have the same chemical composition but basalt is volcanic and gabbro is plutonic \u2014 formed when molten magma is trapped beneath the Earth\u2019s surface and cools into a crystalline mass<\/i>.\u00a0 Gabbro is an essential part of the oceanic crust and is found all over the world.\u00a0 It is commonly found in the core of the Sierra Nevada mountain range as a large batholith or placement of igneous rock.<\/p>\n

\"galant-gabbro_stonecontact\"<\/a>Gabbro is dense, greenish or dark-colored.\u00a0 It is coarse grained, with large crystals.<\/p>\n

Ocellar<\/i> (spotted) varieties of gabbro can be used as ornamental facing stones and as paving stones.\u00a0 Known by the trade name of \u2018black granite\u2019 gabbro is popular for use as graveyard headstones.\u00a0 It is also used in kitchens for countertops under the misleading name of \u2018black granite\u2019.\u00a0 A famous example of gabbro can be seen in the Vietnam Memorial Wall<\/i>.<\/p>\n

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PHOTOS:<\/strong><\/p>\n