https://albionfireandice.co.uk/products/tridymite-and-cristobalite-from-vechec-quarry-slovakia/
Tridymite and Cristobalite from Vechec quarry, Slovakia
Nice little specimen of two relatively uncommon minerals from the Vechec quarry, Slovakia. This is a small specimen and magnification is required to see the...
cristobalitequarryslovakia
https://ivhhn.org/node/160
Formation of cristobalite nanofibers during explosive volcanic eruptions | IVHHN
volcanic eruptionsformationcristobalitenanofibersexplosive