tachylite

• اسم يشير إلى الزجاج البركاني القاعدي أو البازلتي، وهو عادة أسود أو بني غامق، يتكون من التبريد السريع للحمم.

A noun referring to a basic or basalt glass, typically black or dark brown in color, formed by the rapid cooling of lava.

1. Basaltic volcanic glassC2formalscientific

   A natural black or dark brown glass formed by the rapid cooling of basaltic magma, often found in volcanic environments.

   الزجاج البركاني البازلتي

   • The geologist identified the sample as tachylite due to its glassy texture and dark color.
   • Tachylite is commonly found in the outer crust of lava flows.
   • Under the microscope, tachylite shows a characteristic vitreous structure.