ACICULAR • E-FREE TRANSLATION.COM • Definition of Acicular

... were several great fissures emitting smoke and steam, with occasional subterranean detonations. These were on the side of a small, flank crack which was smoking heavily. There was light pumice everywhere, but nothing like recent lava or scoriae. One fissure was completely lined with exquisite, acicular crystals of sulphur, which perished with a touch. Lower down there were two hot springs with a deposit of sulphur round their margins, and bubbles of gas, which, from its strong, garlicky smell, I suppose to be sulphuretted hydrogen. Farther progress in that direction ...

— Unbeaten Tracks in Japan • Isabella L. Bird

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