MAGMATSKE KAMNINE / MAGMATIC ROCKS
Pegmatit je magmatska kamnina žilnina, pri kateri so kristali posameznih mineralov mnogo večji kot v magmatskih kamninah globočninah enake sestave. Ravenski pegmatit sestavljajo sivkasta do brezbarvna ter prosojna zrna kremena, bela zrna s porcelanastim videzom so glinenci in črn turmalin šorlit.
Pegmatite is a magmatic rock vein in which the crystals of individual minerals are much larger than in similar magmatic rocks at depth. Ravenna pegmatite is composed of greyish to colourless and translucent quartz grains, white claystone grains with a porcelain appearance, and black tourmaline schorlite.
Andezit je magmatska kamnina predornina, ki jo sestavljajo zrna plagioklazov, piroksenov in rogovače, kremena je zelo malo.
Andesite is a magmatic rock made up of plagioclase, pyroxene, and hornblende grains with very little quartz.
Rapakivi granit je magmatska kamnina globočnina, pri katerem so večja zrna ortoklaza obdana z belim plagioklazom.
Rapakivi granite is a magmatic rock composed of larger orthoclase grains surrounded by white plagioclase.
Tonalit je magmatska kamnina globočnina, ki jo sestavljajo predvsem kremen, plagioklazi, rogovača, biotit in do 10% kalijevih glinencev.
Tonalite is a deep magmatic rock that is primarily composed of quartz, plagioclase, hornblende, biotite, and up to 10% potassium feldspar.
Ignimbritni tuf je piroklastična kamnina, nastala s sprijetjem še žarečega vulkanskega pepela, ki se je v obliki piroklastičnega toka valil po pobočjih vulkana po vulkanski eksploziji. Ker so bili žareči tufski delci še gnetljivi – plastični so se po odložitvi še premikali v obliki toka in in zato ta primerek kaže usmerjeno fluidalno teksturo tečenja.
Ignimbrite tuff is a pyroclastic rock formed by the coalescence of still glowing volcanic ash that rolled down the volcano's slopes after a volcanic explosion. The glowing tuff particles were still malleable after deposition, but the plastic ones were still moving in the form of a flow, giving this specimen a directional fluid flow texture.