Question

Siderite is an ore of:
(A) Cu
(B) Al
(C) Ag
(D) Fe

Answer 1

We need to know about the ore. The mineral siderite commonly occurs in thin beds with shales, clay, or coal seams (as sedimentary deposits). It is important for steel production. Haematite, Magnetite are other ores found from the same metal.

Complete step by step answer
We already know the formula:
Siderite belongs to the calcite group of minerals, a group of related carbonates that are isomorphous with one another. They are similar in many physical properties, and may partially or fully replace one another, forming a solid solution series.
Siderite is a mineral composed of iron (II) carbonate $\left( {FeC{O_3}} \right)$ . It is a widespread mineral that is an ore of iron. The mineral commonly occurs in thin beds with shales, clay, or coal seams (as sedimentary deposits) and in hydrothermal metallic veins (as gangue, or waste rock).
Thus, it is an ore of Fe.
Now we need to select the correct option.
Thus, the correct option is D.

Note Siderite forms as a sedimentary precipitate, in hydrothermal veins, in metamorphic rocks formed from such protoliths, and, rarely, in pegmatites. In sedimentary environments it forms in extensive beds of banded iron formations and as more localized deposits of bog-iron ore. Siderite is commonly found in hydrothermal veins, and is associated with barite, fluorite, galena, and others. It is also a common diagenetic mineral in shales and sandstones, where it sometimes forms concretions, which can encase three-dimensionally preserved fossils. It has been used as an iron ore and for steel production.
The different types of iron ore found in India are Haematite, Magnetite, Limonite & Siderite.