An introduction to minerals and rocks under the microscope: Figure 36 A view of the main screen of the Gabbro page in the Virtual Microscope. - OpenLearn - Open University
Rocks Under a Microscope
Sliced thin; time and process recorded in igneous rocks - Geological Digressions
Transactions . nada as in Europe. The devel-opment of the microperthitic feldspar is highly significant, oc-curring, as it does, in a plutonic gabbro. There are several good exposures of the massive gabbro,