Ключевые слова: analysis, asteroid, astronomy, background, catastrophe, chondrite, cosmos, crystal, crystalisation, detail, earth history, extraterrestrial, galaxy, geological, geology, impact, interstellar, laboratory, material, meteorite, micro, microscope, microscopy, mineral, mineralogy, nature history, nwa, nwa 6870, optical, petrographic, petrography, planet, polarized, rock, science, section, space, stone, structure, texture, thin section, universe,