Marble Thin Section Minerals
Damage produced during thin section grinding causes speckles of light in the biotite where the crystal lattice has been deformed.
Marble thin section minerals. The first is extremely fine with signs of dynamic recrystallization and the second exhibits texture and mgs similar to those of carrara marble. Identification tables for common minerals in thin section these tables provide a concise summary of the properties of a range of common minerals. Basalt in thin section in xpl with phenocrysts of plagioclase feldspar and pyroxene mostlikely opx. Within the tables minerals are arranged by colour so as to help with identification.
Rock forming minerals of metamorphic rocks in thin section a work in progress 1 olivine. Microstructure and grain size measurements on thin sections of this marble identify two petrographic varieties. Properties rock group metamorphic metamorphism type regional metamorphic rock class carbonate protolith limestone common minerals calcite dolomite micas marble in hand sample for some reason we have no images of just plain marble. This means that biotite in standard thin sections rarely goes completely extinct.
Biotite metaluminous granite showing a close up of one crystal. We re working on that. Plane polarised light width of view 2 5 mm.