Rhyolite is a pale-coloured igneous rock with fine-grained (too small to be seen) interlocking crystals.
Pale-coloured crystals are usually rich in silicon.
Locality - Glyder Fawr, Snowdonia, Wales
© public domain, taken by Velela
Hand specimen |
Locality |
Rock in use |
Close-up |
Thin section p-polars |
Thin section x-polars |