Tuff
A rock classification type
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About Tuff
A pyroclastic rock where the average size of more than 75% of the pyroclastic fragments is less than 64mm and less than 25% of the fragments are lapilli. A general term for all consolidated pyroclastic rocks. Not to be confused with tufa. Adj: tuffaceous.
Unique Identifiers
Mindat ID:
48591
Long-form identifier:
mindat:1:1:48591:5
GUID
(UUID V4):
(UUID V4):
acc4f4de-69e3-40f7-9c6d-59304b882a4f
Classification of Tuff
Classification of polymodal pyroclastic rocks (after Fisher, 1966)
Sub-divisions of Tuff
Age distribution
Recorded ages:
Cenozoic : 10.1 ± 1.0 Ma to 0.94 ± 0.14 Ma - based on 5 recorded ages.
Synonyms of Tuff
Other Language Names for Tuff
French:Tuf
Common Associates
Associated Minerals Based on Photo Data:
| 2 photos of Tuff associated with Calcite | CaCO3 |
| 2 photos of Tuff associated with Fayalite-Forsterite Series | |
| 1 photo of Tuff associated with Obsidian | |
| 1 photo of Tuff associated with Iron-bearing Calcite | (Ca,Fe)CO3 |
| 1 photo of Tuff associated with Sulphur | S8 |
Internet Links for Tuff
mindat.org URL:
https://www.mindat.org/min-48591.html
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Aiguilhe, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France