These are photomicrographs very thin slices of rock seen in plane polarised light or between crossed polarisers when the colours seen are produced by interference of light.
Marble on microscope.
Marble width 2 8 cm uk virtual microscope the united kingdom virtual microscope ukvm collection consists of igneous sedimentary and metamorphic rocks from around the uk.
It is composed primarily of the mineral calcite caco3 and usually contains other minerals such as clay minerals micas quartz pyrite iron oxides and graphite.
Some common rock types as seen under the microscope.
Rocks under the microscope.
Check for smooth lines or a single straight line that runs deep into the marble.
Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism.