In some cases it does contain crystals that formed prior to the eruption.
Tuff rocks are formed from volcanic ash and debris that have been compacted and cemented together. They are usually light in color and can contain fragments of volcanic glass, crystals, and other minerals. Tuff rocks are commonly found in areas with past volcanic activity and are often used for construction purposes due to their durability.
The homonym for tuff is "tough."
Tough is the same as rough; tuff means cool (ex:a tuff looking Mustang or a tuff record)
No, Tuff Hedeman is alive.
"Tuff" in Spanish is "toba"
Ford Tuff is 5' 10".
Tuff TV was created in 2009.
Tony Tuff was born in 1955.
Tuff Love was created in 2008.
Tuff Shed was created in 1981.
Tuff Shed's population is 1,000.
Tuff Gong was created in 1970.