Ignimbrite
Rock
Also called Welded tuff and Ash-flow tuff
About it
Deposit of a pyroclastic flow of ash, pumice, and crystals, often welded so hot that pumice flattened into dark streaks (fiamme). Forms the cliffs of Bandelier, New Mexico, and much of the Taupo region of New Zealand.
- Type
- Rock (igneous)
- Group
- Igneous (pyroclastic)
- Lustre
- dull
- Colours
- pink, grey, tan, brown, red
- Transparency
- opaque
Typical values: real specimens vary. For more, see mindat.org.