更多spathic例句

1. Spathic Iron Ore.—Carbonate of iron, when found in a comparatively pure and crystallized state, is known as spathic or sparry.
2. It was early known as spathose iron, spathic iron or steel ore.
3. It is obtained from hmatite and spathic ore, coke being used for the smelting.
4. Siderite, or spathic iron ore, FeCO3, crystallizes in the rhombohedral system and contains 48.28% of iron.