FoPlAmpCalcsilicate Thin Section Photos. Click on any photo for a larger image. Some of the larger images may be on other web sites and will open in a new window.
 

Hornfels Thin Section

FoPlAmpCalcsilicate_001. This calc-silicate rock contains bands of forsterite olivine, plagioclase, and calcite and bands of quartz and amphibole. The protolith of this gneiss was most likely an Archean altered volcanic rock. Image from the UK Virtual Microscope.