Combine first 7 ingredients. Stir in 1/2 teaspoon salt, 1/2 teaspoon pepper, and garlic.
Rub halibut with oil; sprinkle with 1/2 teaspoon salt and 1/2 teaspoon pepper. Place fish on grill rack; grill 3 minutes on each side or until fish flakes easily when tested with a fork. Serve with mango salsa.
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