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油页岩是高灰分的腐泥岩,作为工业矿床要求含油率大于5%,发热量超过1800大卡/公斤(各国不同时期标准有变化).油页岩形成在水深十多米到一百米的湖(海)盆地内,并且远离源区;陆源碎屑物质的粒度
Oil shale is a high-ash sapropelite that requires an oil content greater than 5% as an industrial deposit and a calorific value of more than 1800 kcal / kg (varying from time to time in different countries) Oil shale develops over a depth of 10 to 100 meters Of the lake (sea) basin, and away from the source area; terrestrial detrital material particle size