A layer of rock or mineral resources that is extracted.

A layer of soil or sediment from which minerals or fossils can be dug out.

मिट्टी की परत

English Usage: The archaeologists discovered a mine layer containing ancient fossils.

Hindi Usage: पुरातत्ववेत्ताओं ने एक खदान की परत खोजी जिसमें प्राचीन जीवाश्म थे।