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VW_2018 07-13_USGS photo 2

Continued degassing from fumaroles at fissures on Kīlauea Volcano’s lower East Rift Zone produce native sulfur crystals when sulfur dioxide and hydrogen sulfide gases react and cool upon reaching the surface. The delicate sulfur crystals are 5-15 mm (0.2-0.6 in) long. USGS photos by A. Lerner, 2018.

Continued degassing from fumaroles at fissures on Kīlauea Volcano’s lower East Rift Zone produce native sulfur crystals when sulfur dioxide and hydrogen sulfide gases react and cool upon reaching the surface. The delicate sulfur crystals are 5-15 mm (0.2-0.6 in) long. USGS photos by A. Lerner, 2018.

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