Ключевые слова: aggregate, baia, beautiful, chalcopyrite, chemical, cluster, crystal, crystalline, crystals, detail, gem, geology, golden, iron, isolated, light, macro, mare, matrix, metal, mine, mineral, mineralogy, natural, nature, ore, pegmatite, precious, pyrite, quartz, raw, rock, romania, sample, science, specimen, sphalerite, stone, sulfide, sulfite, sulphate, sulphide, surface, system, traditional, translucent, white, yellow, zinc,