1) Metamorphic rock 2) Sedimentary rock
Found on
https://www.crosswordclues.com/clue/porcellanite
Porcellanite or porcelanite, is a hard, dense rock somewhat similar in appearance to unglazed porcelain. It is often an impure variety of chert containing clay and calcareous matter. At Tievebulliagh, Northern Ireland porcellanite is a tough contact metamorphosed hornfels formed from a lateritic soil horizon within a basaltic intrusive/extrusive s...
Found on
http://en.wikipedia.org/wiki/Porcellanite
hard, dense rock that takes its name from its resemblance to unglazed porcelain. Frequently porcellanite is an impure variety of chert containing ...
Found on
http://www.britannica.com/eb/a-z/p/95
A hard and dense rock that is a variety of chert that often contains clay and calcareous matter. Also spelled Porcelanite.;
Found on
http://www.encyclo.co.uk/local/22188
No exact match found.
