As nouns the difference between margarite and margarita

is that margarite is a calcium-rich member of the mica group of phyllosilicates, forming white to pinkish or yellowish-gray masses or thin laminae while margarita is a cocktail made with tequila, an orange-flavoured liqueur, and lemon or lime juice, often served with salt encrusted on the rim of the glass.

As a proper noun Margarita is

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