1 Sunday: The Garden Grove forecast for Oct 25 is 83 degrees and Sunny. 2  There is 13 percentage chance of rain and 5 mph winds from the West-Northwest. 3  Monday: The Garden Grove forecast for Oct 26 is 85 degrees and Sunny. 4  There is 22 percentage chance of rain and 2 mph winds from the East.
Pumice /ËpÊmÉ¨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.Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles, thicker vesicle walls and being dark colored and denser. Pumice is created when super-heated, highly pressurized rock is violently ejected from a volcano.The unusual foamy configuration of pumice happens because of simultaneous rapid cooling and rapid depressurization.t is commonly, but not exclusively of silicic or felsic to intermediate in composition (e.g., rhyolitic, dacitic, andesite, pantellerite, phonolite, trachyte), but basaltic and other compositions are known. Pumice is commonly pale in color, ranging from white, cream, blue or grey, to green-brown or black.
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.