Welcome to Country Auto Sales. We are a full service Massachusetts used car dealer located in Southwick serving the towns of Hampden County, Springfield MA, Worcester MA, Boston MA, Westfield MA, Agawam MA, West Springfield MA, Longmeadow MA, Springfield MA, Chicopee MA, Windsor Locks CT, Holyoke MA, East Longmeadow MA, Easthampton MA, Ludlow MA, South Hadley MA, Somers CT, Wilbraham MA and Ellington CT.
Clastic sedimentary rocks form when individual grains (the sediment), made by fragments of rocks, minerals, or shells, are cemented together (the clastic sediemntary rock). These are the only type of rock that is NOT made simply of crystals, but rather fragments of other materials, broken and then reassembled together.
Chemical sedimentary rocks are identified by identifying the mineral from which they are composed. In this lab there are four minerals that need to be identified-quartz, halite, gypsum and calcite.Quartz has a hardness of 7 and is very difficult to scratch, even with a good quality knife blade.lastic sedimentary rocks contain clasts. These are fragments or pieces of rock or minerals. The composition of clastic sedimentary rocks is divided into three types-clay/silt, sand and gravel. Clay and silt are less than 1/16 mm. These are not visible to the unaided eye.