a blocking is a mean of metamorphic stone & factor is a mean of sedimentary stone ->  sandstone is a kind of sedimentary rock and quartzite is a kind of metamorphic rock  sandstone is a kind of sedimentary rock and quartzite is a kind of metamorphic rock & window is a public of a stone and includes hollow of sedimentary / metamorphic / igneous ->  sandstone is in the class of sedimentary rock and quartzite is in the class of metamorphic rock  sandstone is in the class of sedimentary rock and quartzite is in the class of metamorphic rock & a stone intestines from thrust into fuels ->  the rock changes class from sedimentary rock to metamorphic rock  the rock changes class from sedimentary rock to metamorphic rock & as the window of a stone organs , the want of the stone will moving the same -> the mass of the rock will remain the same