Ключевые слова: aggregate, banska, barite, barium, brown, closeup, cluster, coating, crystal, crystalline, dark, gem, gemology, geological, geology, heavy, hematite, hydrothermal, isolated, macro, matrix, metal, mine, mineral, mineralogy, natural, nature, ore, pegmatite, poison, pyrite, rock, sample, slovakia, specimen, stiavnica, stone, sulphate, toxic, treasure, white,