Chemical Rocks. 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. read more
Chemical precipitates are sedimentary rocks formed by precipitation of minerals from seawater, mineral-rich springs or salt lakes. Organic sedimentary rocks are formed from organic matter or organic activity, Sedimentary rocks are the only rocks where fossils can be preserved as at the elevated temperatures and pressures in which the igneous and metamorphic rocks form, fossils and organic remnants are destroyed. read more
Sedimentary rock is classified into two groups based on how they form. They are clastic and chemical.. Clastic sedimentary rock is formed as bits of weathered rock become cemented together. read more
We can see the three types of sedimentary rocks on page seven of the ESRT in the Scheme for Sedimentary Rock Identification. Clastic Sedimentary Rocks clastic sedimentary rocks form frm the fragments of other rocks. read more