An iron-rich clay mineral of the smectite group, typically green to yellowish. It's a grounding and nurturing stone, connecting with Earth energies and promoting emotional healing.
Green, Yellowish-Green, Olive Green, Brownish-Green, often earthy
Nontronite is classified as a phyllosilicates smectite group mineral which typically crystallizes in the monoclinic system. Its chemical formula is (CaO0.5,Na)0.3Fe3+2(Si,Al)4O10(OH)2·nH2O. Common crystal habits include earthy masses.