Assertion: zinc | /r/HasProperty | mined
Facets:
Source sentences:
text: Zinc was first used in China by at least A.D. 1637, and was mined and smelted in India even earlier — by the ninth century B.C., at least, according to the 2006 research published in the journal Ancient Asia.
text: Zinc is mined from several different minerals, including sphalerite (zinc sulfide), smithsonite (zinc carbonate), hemimorphite (zinc silicate) and zincite (zinc oxide).