Petr Hykš:
Plagioclase extinction 1 (30 µm thin section, XPL)
Petr Hykš:
Plagioclase extinction 2 (30 µm thin section, XPL)
Petr Hykš:
Plagioclase extinction 3 (30 µm thin section, XPL)
Petr Hykš:
Plagioclase extinction 4 (30 µm thin section, XPL)
Petr Hykš:
Quartz (30 µm thin section, PPL)
Petr Hykš:
Quartz (30 µm thin section, XPL)
Petr Hykš:
Quartz and epidote (30 µm thin section, PPL)
Petr Hykš:
Quartz and epidote (30 µm thin section, XPL)
Petr Hykš:
Quartz crystals (thick thin section, XPL)
Petr Hykš:
Quartz vein (30 µm thin section, PPL)
Petr Hykš:
Quartz vein (30 µm thin section, XPL)
Petr Hykš:
Myrmekite - quartz intergrowth in feldspar (30 µm thin section, XPL)
Petr Hykš:
Perthite - Na & K rich feldspar intergrowths (30 µm thin section, XPL)
Petr Hykš:
Perthite - Na & K rich feldspar intergrowths (30 µm thin section, XPL)
Petr Hykš:
Perthite - Na & K rich feldspar intergrowths (30 µm thin section, XPL)
Petr Hykš:
Orthoclase twinning (30 µm thin section, PPL)
Petr Hykš:
Orthoclase twinning (30 µm thin section, XPL)
Petr Hykš:
Orthoclase twinning (30 µm thin section, XPL)
Petr Hykš:
Microcline crystal surrounded with quartz (30 µm thin section, XPL)
Petr Hykš:
Microcline (30 µm thin section, XPL)
Petr Hykš:
Microcline (30 µm thin section, XPL)
Petr Hykš:
Microcline (30 µm thin section, XPL)
Petr Hykš:
Plagioclase and other feldspar in cordieritic granite (30 µm thin section, XPL)
Petr Hykš:
Plagioclase crystals (30 µm thin section, XPL)
Petr Hykš:
Plagioclase crystal (30 µm thin section, XPL)
Petr Hykš:
Plagioclase twinning (30 µm thing section, XPL)
Petr Hykš:
Granite (30 µm thin section, XPL)
Petr Hykš:
Muscovite (30 µm thin section, PPL)
Petr Hykš:
Muscovite (30 µm thin section, XPL)
Petr Hykš:
Muscovite (30 µm thin section, XPL)
