Polymict conglomerate. Clasts predominantly limestone, but include some silicates including muscovite; a few clasts are pebbles of igneous/metamorphic rocks (granite/gneiss etc.). Matrix is calcarenite with some quartz, coated with yellowish goethite.
Comments:
This is a similar stone to no.697, and probably from the same locality.
References:
Further information:
Corsi's classification:
Class 10. Pudding-stones; ii. Italian pudding-stones