itacolumite


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it·a·col·u·mite

 (ĭt′ə-kŏl′yə-mīt′)
n.
A variety of sandstone that is flexible when cut into thin slabs.

[After Itacolumi (Itacolomi), a mountain of east-central Brazil.]

itacolumite

(ˌɪtəˈkɒljʊˌmaɪt)
n
(Geological Science) a fine-grained micaceous sandstone that occurs in thin flexible slabs
[C19: named after Itacolumi mountain in Brazil where it is found]
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References in periodicals archive ?
It consisted of a long strip of itacolumite hooked to an electric motor which, when activated by pushing a switch on the outside of the case, caused the rock to flex up and down: itacolumite is known as "the rock that bends.