The results indicated that large amounts of non-natural silver grains existed in this branch of lead concentrates and the silver grains were distributed around the galena in a loose flocculating form.
The results indicated that large amounts of non-natural silver grains existed in this branch of lead concentrates and the silver grains were distributed around the galena in a loose flocculating form.
结果表明，此批铅精矿含有大量的非天然银矿物，银颗粒呈疏松絮状物分布在方铅矿周围。