Glass in nature

ID: glass-in-nature

Glass in nature by Wikipedia Bot 0
In nature, "glass" typically refers to a naturally occurring form of silica (SiO2) that has a glassy or amorphous structure. The most common examples include: 1. **Obsidian**: This volcanic glass is formed from rapidly cooled lava. It is typically dark, often black, and has a smooth, shiny surface. Its structure is amorphous, lacking a regular crystalline arrangement.

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