Rinse the quinoa with cold water and strain. In a pot, add the quinoa, water and salt. Bring to a boil and turn the heat down to simmer. Cook for 15 minutes or till the liquid is absorbed. When done, fluff with a fork and then lay out in a thin layer on a baking sheet to cool.
While the quinoa is cooking, reduce the orange juice to half by simmering is a non-reactive sauce pan for approximately 10 minutes. Set in the freezer for 5 mintues to cool. Once cooled, whisk in olive oil to make a vinaigrette.
In a large bowl, combine the cranberries, raisins, nuts, orange slices and cooked quinoa. Pour vinaigrette over the mixure and stir together. If desired, add fresh chopped mint. Serve cold. Great with a side of whole grain toast or leafy greens -- or by itself. Makes approx 8 servings.