camptonite A dark-coloured, medium-grained igneous rock composed of plagioclase feldspar, barkevikite (a sodium-bearing amphibole) and/or augite. Camptonites are one variety of a group of intrusive rocks collectively known as lamprophyres which characteristically form dykes. The original camptonite was named from Campton Falls in New Hampshire, USA.
More From encyclopedia.com
Igneous Rocks , Igneous rocks are formed by the cooling and hardening of molten magma. The word igneous comes from the Latin word igneus, meaning fire, and there are… Iron Ores , Rocks Rocks are composed of minerals, which are natural inorganic (nonliving) substances with specific chemical compositions and structures. A rock m… Rock , rock1 / räk/ • n. 1. the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underly… Metamorphic Rocks , Metamorphic rock is rock that has changed from one type of rock into another. The word metamorphic (from Greek) means “of changing form.” Metamorphic… Sedimentary Rock , Sedimentary rocks form at or near Earth’s surface from the weathered remains of pre-existing rocks or organic debris. The term sedimentary rock appli… Country Rock , Country rock The term country rock refers to a body of rock that receives or hosts an intrusion of a viscous geologic material. Intrusions into count…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like