Porcellanite
Bučník Hill Quarry, Komňa, Uherské Hradiště District, Zlín Region, Czech Republic
11.5 x 7.8 x 2.6 cm. Specimens are rare from this large abandoned open pit quarry, that was active from 1951-1998. Porcellanite is a group of siliceous-rocks that have the texture, lustre and conchoidal fracture of porcelain and somewhat resembles jasper. This is a rare and sculptural large polished blue-gray slab with striking brown crossed ...
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