Petr Hykš:
Basalt with olivine nodules
Petr Hykš:
Basalt with olivine nodules
Petr Hykš:
Basalt with olivine nodules
Petr Hykš:
Olivine (Mg,Fe)SiO4
Petr Hykš:
Basalt with olivine nodules
Petr Hykš:
Mafic enclave in diorite
Petr Hykš:
Olivine in basalt
Petr Hykš:
Olivine nodules in basalt
Petr Hykš:
Olivine nodules in basalt
Petr Hykš:
Olivine nodule in basalt
Petr Hykš:
Olivine nodules in basalt (detail)
Petr Hykš:
Olivine nodules in basalt (detail)
Petr Hykš:
Basalt with olivine nodules
Petr Hykš:
Graphic texture (micro-capture)
Petr Hykš:
Aplite with tourmaline phenocrysts
Petr Hykš:
Pegmatite
Petr Hykš:
Durbachite, porfyric ultra-K-rich syenite
Petr Hykš:
Amygdaloidal permian vulcanite
Petr Hykš:
Amygdaloidal permian vulcanite
Petr Hykš:
Amygdaloidal permian vulcanite
Petr Hykš:
Upper mantle xenolith (mainly olivine & diopside) in basalt
Petr Hykš:
Amygdaloidal permian vulcanite
Petr Hykš:
Chalcedony layers & quartz crystals filled amygdaloidal permian vulcanite
Petr Hykš:
Beautiful agate (as found)
Petr Hykš:
Columnar jointing (panorama)
Petr Hykš:
Basalt columnar jointing
Petr Hykš:
Olivine found
Petr Hykš:
Basalt columnar jointing
Petr Hykš:
Peridotite xenoliths in neovolcanic basalts
Petr Hykš:
Basalt columnar jointing
