clinkstone

/ ˈklɪŋkˌstəʊn /

noun

1. a variety of phonolite that makes a metallic sound when struck

Example Sentences

(c.) Phonolite (Clinkstone) is a trachytic rock, composed essentially of sanidine, nepheline, and augite or hornblende.

From Project Gutenberg

A fissile texture is occasionally assumed by clinkstone and other trap rocks, so that they have been used for roofing houses.

From Project Gutenberg

Some varieties are slaty, and are frequently mistaken for clinkstone, which they closely resemble.

From Project Gutenberg