Ключевые слова: allocation, alloy, background, bornite, calcite, closeup, crystal, gem, gemstone, geological, geology, golden, industry, iron, macro, marble, material, metal, metallic, mine, miner, mineral, mineralogy, mining, natural, nature, nugget, ore, precious, quartz, rare, raw, resource, rock, science, shaft, siberia, silica, specimen, stone, sulfide, surface, unique,