Composition-Iron carbonate, usually containing some magnesium and calcium, sometimes magnesium, zinc and cobalt
Colour-White, light yellow, green, yellowish brown, light to dark brown, reddish brown, gray
Streak-White
hardness-3.5 -4.0
Lustre-Vitreous, pearly
Cleavage-1,3- Rhombohedral
Transparency-Rarely transparent; usually translucent to nearly opaque
Other example- Chalybite
Uses- Siderite is an iron ore in some Countries