Iris Fontbona (Chile) $11 billion
Widowed, 3 children
Inherited fortune after her husband Andronico Luksic died in 2005. She is matriarch of the family that controls Antofagasta, one of the world's largest copper mines; It has shares in Quinenco, a consumer packaging and beverage maker, and Plava Laguna, a chain of Croatian beach resorts. Son Jean Paul is Antofagasta's chairman.
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