1 Monday: The Garden Grove forecast for Oct 19 is 79 degrees and Partly Cloudy. 2  There is 48 percentage chance of rain and 6 mph winds from the Southwest. 3  Tuesday: The Garden Grove forecast for Oct 20 is 84 degrees and Sunny.
Pumice (pronunciation: /ËpÊmáµ»s/), called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. It is typically light colored.
Pumice is a type of extrusive igneous rock, formed from high silica lava which is explosively erupted from volcanoes. If the amount of trapped gases in the lava is high, vesic â¦ ular pumice will be formed; thin walled, high in trapped gas pockets, and able to float on water.umice is a type of extrusive igneous rock, formed from high silica lava which is explosively erupted from volcanoes. If the amount of trapped gases in the lava is high, vesic â¦ ular pumice will be formed; thin walled, high in trapped gas pockets, and able to float on water.