Skip to main content
U.S. flag

An official website of the United States government

Crystals of pure native sulfur at sites of degassing called fumaroles

Detailed Description

Different sulfur gases, including sulfur dioxide (SO2) and hydrogen sulfide (H2S), can react with each other to deposit crystals of pure native sulfur at sites of degassing called fumaroles. The crystals picture here formed within a Sulphur Banks area fumarole in Hawai‘i Volcanoes National Park. USGS photo by T. Elias.

Sources/Usage

Public Domain.