Search Results for: Cocoa shells
composition of ordinary portland cement the chief chemical components of ordinary portland cement are: calcium, silica, alumina, iron. calcium is usually derived from limestone, marl or chalk while silica, alumina and iron come from the sands, clays & iron ores. other raw materials may include shale, shells
dolomite originally formed mainly in sea water, or lakes, from the remains of animals and plants, also from transportation and deposition of rock products. geologically the stones can be classified as follows:.... a. detrital is made from disintegrated pre-existing rock. b. biogenetic is made from shells...
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