The difference between argillaceous sandstone and sandy mudstone?
The sand sandstone is deposited on the bed after water handling, after thousands of years of accumulation and strong physical effects by geological cementation and sandstone rock. Granular structure, good performance of permeability, the grain size of the 1/16-2mm particles, especially small, such as the diameter of 1/16-1/250mm is called the main ingredients of siltstone. More than 52% ingredients: Quartz clay; 15%; goethite is about 18%; more than 10% other substances. If the quartz content is above 90%, called quartz sandstone.
The main difference is the size of particles and the ratio of clay minerals to cement and sand
Is a kind of mudstone clay rocks, formed from clay material after compaction, dehydration, recrystallization. The tiny mineral composition, particle size less than 1/256mm, with sheet or sheet bedding, easy to hit split into pieces with a hard object, permeability is very poor.The fracture of the argillaceous sandstone is more rough than that of the sandy mudstone, and the sand of the argillaceous sandstone is more sensitive than that of the handAfter soaking, the mudstone is easy to soften
