palagonite
/pælɒɡənaɪt/Definitions
1. noun
A type of rock formed by the rapid cooling and solidification of volcanic ash.
“The geologist studied the unique properties of palagonite and its role in the region’s geological history.”
2. noun
A type of volcanic glassy rock found in some basaltic areas.
“Palagonite is often found in association with other volcanic rocks in the same region.”