IPA: //ˈkælktʌfə//
KK: /ˈkælktʌfə/
A type of rock formed from calcite, often found in natural springs and caves.
The calctufa formations in the cave were stunning and unique.
The word 'calctufa' originates from Latin 'calx' (meaning lime) and 'tufa' (meaning porous rock). It refers to a type of limestone that is formed from the precipitation of calcium carbonate, often found in hot springs or caves.
Think of 'lime' ('calx') and 'porous rock' ('tufa') to remember that 'calctufa' is a type of limestone formed from calcium carbonate.