Take the mango chunks in a blender jar along with lime juice, 1/2 tsp chili powder and make a fine puree.
Add in mango juice and blend again.
In a plate, mix chili powder and sea salt. Keep aside.
Now take a serving glass and rub a lime wedge around the rim of the glass.
Upside down the rim of the glass over the plate containing chili-salt mixture so that the rim get well coated.
Then tap the glass to remove any extra. Keep aside.
Put some ice cubes into the glass and pour the margarita.
Garnish with a lime sice and enjoy !