(c) $Carnallite\ \ KCl,{MgCl}_{2},6H_{2}O$ $Limonite\ \ \ \ \ 2{Fe}_{2}O_{3},3H_{2}O$ $Siderite\ \ \ \ \ \ \ {FeCO}_{3}$ $Horn\ silver\ \ AgCl$ $\therefore$ Siderite is carbonate ore.
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.