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.
The depressurization and the escape of gas from a beverage is the same process that occurs when magma is depressurized as it emerges from a volcanic vent. The foam is equivalent to what will become scoria on solidification. A vesicular igneous rock that is very similar to scoria is pumice. There are a few differences that can be used to distinguish them. First is their color. Scoria is almost always black or dark gray to reddish brown while pumice is almost always white to light gray to light tan.