Cook on low until the sugar is dissolved. Remove from heat and let the habanero steep for 15 minutes. Strain the mixture using a fine sieve into a lidded jar. Store in the fridge until ready for use.
Chili Powder/Salt Rim
Mix together chili powder and salt together on a small plate, set aside.
Wet the rim of your glasses (with water or use lime juice by rubbing a lime wedge along the rim) and then dip the rim in the chili powder/salt mixture.
Fill the glasses with ice.
Margarita
Place thawed mango and habanero simple syrup in a Vitamix or high powdered blender.
Blend until smooth and set aside.
Fill a shaker with a few ice cubes (don't use too many, as the margarita ingredients fill the shaker most of the way).
Pour in mango/simple syrup mixture, tequila, triple sec, and lime juice.
Shake until chilled.
Pour evenly into two glasses and drink immediately!