basalt
noun
ba·salt bə-ˈsȯlt 
ˈbā-ˌsȯlt
ˈbā-ˌsȯlt : a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite
basaltic
bə-ˈsȯl-tik
adjective 
Example Sentences
Recent Examples on the Web Here, the printer will use basalt found in the Knippa Quarry off Texas 90 between Sabinal and Uvalde to show visitors what habitats on the moon could look like. 
Eric Killelea, San Antonio Express-News, 12 Aug. 2022 The big basalt rock columns — meant as a nod to Devils Postpile National Monument in the Eastern Sierra — steal the show. Mary Forgione, Los Angeles Times, 10 Mar. 2022 In Europe, Capita Snowboards’ factory runs on 100-percent green energy, and Grown Skis uses eco-friendlier basalt instead of carbon fiber, sustainably harvested wood, and glues made from pine tree resin. Tracy Ross, Outside Online, 5 Mar. 2021 Book a table next to the floor-to-ceiling windows at ROK for unparalleled views of Hallgrimskirja, Reykjavik’s famous basalt-columned church. Katie Lockhart, House Beautiful, 5 Aug. 2022 For example, there’s lots of basalt – volcanic rock – in Iceland that reacts with CO2 and turns it into solid carbonates within a few months. Klaus Lackner, The Conversation, 18 Jan. 2022 Made mostly of pH-neutral cement, stainless steel, and basalt, the sculpture provides an artificial reef that encourages coral growth and provides a novel place for marine life to colonize and inhabit while steering tourists away from natural reefs. Ross Kenneth Urken, Travel + Leisure, 8 June 2022 And each house has a trademark Icelandic feature: geothermal basalt stone pools for soaking. Laurie Werner, Forbes, 28 Dec. 2021 The island is a craggy basalt rock that juts up from water so rough that boats cannot dock. New York Times, 9 Apr. 2022 See More
Eric Killelea, San Antonio Express-News, 12 Aug. 2022 The big basalt rock columns — meant as a nod to Devils Postpile National Monument in the Eastern Sierra — steal the show. Mary Forgione, Los Angeles Times, 10 Mar. 2022 In Europe, Capita Snowboards’ factory runs on 100-percent green energy, and Grown Skis uses eco-friendlier basalt instead of carbon fiber, sustainably harvested wood, and glues made from pine tree resin. Tracy Ross, Outside Online, 5 Mar. 2021 Book a table next to the floor-to-ceiling windows at ROK for unparalleled views of Hallgrimskirja, Reykjavik’s famous basalt-columned church. Katie Lockhart, House Beautiful, 5 Aug. 2022 For example, there’s lots of basalt – volcanic rock – in Iceland that reacts with CO2 and turns it into solid carbonates within a few months. Klaus Lackner, The Conversation, 18 Jan. 2022 Made mostly of pH-neutral cement, stainless steel, and basalt, the sculpture provides an artificial reef that encourages coral growth and provides a novel place for marine life to colonize and inhabit while steering tourists away from natural reefs. Ross Kenneth Urken, Travel + Leisure, 8 June 2022 And each house has a trademark Icelandic feature: geothermal basalt stone pools for soaking. Laurie Werner, Forbes, 28 Dec. 2021 The island is a craggy basalt rock that juts up from water so rough that boats cannot dock. New York Times, 9 Apr. 2022 See More Word History
Etymology
Latin basaltes, manuscript variant of basanites touchstone, from Greek basanitēs (lithos), from basanos touchstone, from Egyptian bḫnw
First Known Use
1601, in the meaning defined above