Aug 11, 2023 · Obsidian is an extrusive rock that cooled very rapidly without forming crystals. As a result, obsidian has a smooth, shiny texture of a thick piece of glass.

Jun 21, 2024 · The resulting texture of extremely rapid cooling of lava, where no crystals form, is known as glassy or obsidian texture. This type of texture is smooth, with no visible crystal structures, and ...

Jun 12, 2024 · Basalt cools quickly at the Earth's surface, resulting in fine-grained texture with small crystals. Obsidian forms from rapidly cooled lava without crystal growth, giving it a glassy texture.

Jun 12, 2024 · The glassy texture of obsidian is the best evidence that it formed in an extrusive environment. Obsidian is rapidly cooled lava with no time for crystal growth, resulting in a smooth, glass-like ...

Nov 3, 2022 · The glassy texture of obsidian is the best evidence that it formed in an extrusive environment. Obsidian is rapidly cooled lava with no time for crystal growth, resulting in a smooth, glass-like ...

Jun 9, 2024 · Why is The texture of obsidian is best described as glassy? Updated: 6/9/2024. Wiki User. ∙ 13y ago. Study now. See answers (2) Best Answer. Copy.

Jun 12, 2024 · See answers (2) Best Answer. Copy

Jun 15, 2024 · Obsidian is an igneous rock that has a smooth glass-like texture. It is formed when lava cools rapidly without crystal formation, resulting in a glassy texture.

The resulting texture of extremely rapid cooling of lava, where no crystals form, is known as glassy or obsidian texture. This type of texture is smooth, with no visible crystal structures, and ...

Jun 14, 2024 · Obsidian is an extrusive igneous rock with a mafic composition and a glassy texture. This rock forms from the rapid cooling of lava with high silica content, preventing the growth of mineral ...