In a 10-inch skillet, heat 2 Tbs. of the oil and the garlic over medium heat until the garlic is golden, about 3 minutes. Stir in 1/8 tsp. of the cumin. Add the tangerine juice, lime juice, and habanero. Bring to a simmer and cook for about 3 minutes. Season to taste with salt and pepper; set the mojo sauce aside. (The sauce can be served warm or at room temperature.)
Heat 2 Tbs. of the oil in a 12-inch nonstick skillet over medium-high heat. Add the onion and ¼ tsp. salt and cook, stirring occasionally, until softened, 3 to 5 minutes. Add the beans and the remaining ½ tsp. cumin and cook until the beans are heated through, 2 to 3 minutes. Stir in the cilantro and season to taste with salt and pepper. Transfer the beans to a bowl and cover with foil to keep warm.
Wash and dry the skillet. Season the turkey cutlets on both sides with salt and pepper. Heat 1 Tbs. of the oil in the skillet over medium-high heat until very hot. Add as many cutlets as will comfortably fit in a single layer and cook until browned on both sides and just cooked through, about 2 minutes per side. Transfer to a plate and tent with foil to keep warm. Repeat with the remaining cutlets, adding the remaining 1 Tbs. oil if needed.
Divide the cutlets and black beans among individual plates. Spoon the mojo sauce over and serve.
