spathic

Siderite, sid′ėr-īt, n. the lodestone: native iron protocarbonate—also Chalybite, Spathic or Sparry iron, Junckerite.

The ores used in the Krupp works for making the best steel are red hæmatite and spathic ore, with a certain proportion of ferro-manganese.

It was early known as spathose iron, spathic iron or steel ore.

It is a constituent of the minerals cerussite, malachite, azurite, spathic iron ore, calamine, strontianite, witherite, calcite aragonite, limestone, &c.

The ore is a mixture of clay iron ore and Iron. spathic ore, together with limonite and hematite.