Is dolomite useful in shale?
Shale was formed in lentic environment, sediment deposition after a long time, so often exist in the lake and river deltas, formed in the continental shelf is shale, shale often contains ancient fossil plants and animals. Sometimes there are animal footprints, even traces of ancient raindrops may be preserved in shale.
Limestone (Limestone), commonly known as limestone, carbonate and calcite as main component. Limestone is a sedimentary rock. Sometimes contain dolomite, clay mineral and detrital minerals, gray, gray, gray and black, yellow, red, brown red color, hardness is generally small, and dilute salt acid react violently. More complex, the clastic structure and grain structure of two kinds of structure. Debris by particle, micrite sparry cement and matrix composition. Also called particle debris, mainly in debris, bioclastic and oolitic, micritic matrix is composed of calcium carbonate fines or crystal particle is mostly less than plaster. 0.05 mm, microspar cements are chemical precipitates filling in porous rock particles between the calcite crystal particles is diameter greater than 0.01 mm; the grain structure is crystal particles by chemical and biological effect of chemical precipitation formed.
Shale (Shale) is a kind of sedimentary rock, complex composition, but having a thin sheet or sheet laminated joints is mainly formed by clay deposited by the pressure and temperature of rock, but mixed with detrital quartz, feldspar and other chemical substances, according to the mixture composition, can be divided into: calcareous shale, iron shale, siliceous shale, carbonaceous shale, black shale, oil shale shale which may be iron ore, oil shale can be refined oil, black shale oil can be used as indication of the formation.
