Since pumice is a volcanic rock, and retains its useful properties only when it is young and unaltered, pumice deposits are found in areas with young volcanic fields. Worldwide, over 50 countries produce pumice products. The largest producer is Italy, which dominates pozzolan production and also produces some pumice. Other major pumice producers are Greece, Chile, Spain, Turkey, and the United States. In the United States, Arizona, California, New Mexico and Oregon are the major producers of pumice, accounting for the majority of the nation’s pumice and pumicite production.
Resources of our country is very rich in pumice. The north of Heilongjiang, Hai nan Island, south of volcanic pumice areal distribution of mineral resources has, to the northern territories, the quality is better, eruption age of newer, prolific in the coastal areas. Water, pumice, commonly known as cellular stone, Jiang Mo stone, pumice, produced in Jilin Province, near the southeastern Tianchi. The stone Duocheng white, gray, white, yellow and other colors, porous and light, can float on the water. Stone gap 9 loop, it seems people tilting, oddly shaped, when there are peaks steep, breathtaking cliffs of the state. A strong body of absorbent stone, easy-long mosses can be carved processing, is also suitable for making bonsai is one of the rocks.
Pumice basically is an extremely vesicular pyroclastic igneous rock of transitional to siliceous magmas which comprise of rhyolite, trachyte and phonolite. It is generally light in colour varying from white, yellowish, grey, grey brown and at times dull red.
Pumice is found extensively in the Pacific Ocean. It has a standard porosity of nearly 90 per cent. Pumice is usually created as pyroclastic material which is released in the air as froth comprising of heaps of gas bubbles or vesicles, the lava freeze rapidly and the vesicles are enclosed in the rock.
Pumise is assumed to be a glass because it comprises no crystal structure and usually differs in density on the basis of the thickness of the solid matter amid the bubbles, a number of sections float in water.
