variolite


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var·i·o·lite

 (vâr′ē-ə-līt′, văr′-)
n.
A basic rock whose pockmarked appearance is caused by the presence of numerous white, rounded, embedded spherules.

var′i·o·lit′ic (-lĭt′ĭk) adj.

variolite

(ˈvɛərɪəˌlaɪt)
n
(Geological Science) any basic igneous rock containing rounded bodies (varioles) consisting of radiating crystal fibres
[C18: from variola, referring to the pockmarked appearance of the rock]
variolitic adj