Polarised light micrograph of a thin section of gabbro,an igneous rock. Gabbro contains the minerals olivine & plagioclase feldspar. Olivine is recognised in the microscope by its numerous,randomly oriented fractures. Plagioclase feldspar forms lath-shaped crystals consisting of multiple twins. In this micrograph,these twins are seen in a variety of colours because a first-order red compensator plate,or "tint plate",has been placed in the microscope. Magnification: x6 at 35mm size. Ref: MICROCOSMOS,fig. 7.20,p. 138 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Hinsch, Jan |
Bildgröße: | 3689 px × 2480 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |