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The mineral also occurs as stalactitic or botryoidal masses with a fibrous structure, or in a massive, cellular or granular condition intermixed with calamine and clay.

At Arendal in Norway, the original locality for both the crystallized and botryoidal varieties, it is found in a bed of magnetite.

Native arsenic is usually found as granular or curvilaminar masses, with a reniform or botryoidal surface.

The network is partly formed out of pigmented cells which are excavated and join to form tubes, the so-called botryoidal tissue, not found among the Rhynchobdellidae at all.

Sometimes the travertin assumes precisely the botryoidal and mammillary forms, common to similar deposits in Auvergne, of a much older date; and, like them, it often scales off in thin, slightly undulating layers.