Halotrichite :: Halotrichite (n.) An iron alum occurring in silky fibrous aggregates of a yellowish white color.

Trichite :: Trichite (n.) A kind of crystallite resembling a bunch of hairs, common in obsidian. See Illust. of Crystallite..

Trichite :: Trichite (n.) A delicate, hairlike siliceous spicule, found in certain sponges..

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