Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
3
Petr Hykš:
Quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
14
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
chalcedony_8_by_flanker_27-d86d5k4
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
chalcedony_10_by_flanker_27-d86d5gd
Petr Hykš:
chalcedony_11_by_flanker_27-d86d5gv
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Rudice-type geode
Petr Hykš:
Rudice-type geodes
Petr Hykš:
Devonian paraspirifer brachiopods
Petr Hykš:
Devonian paraspirifer brachiopod
