1. Blend together the oil, garlic, rosemary, mustard, lime zest and juice, and seasoning to taste.
2. Arrange the chops in a dish and coat with the marinade.
3. Cover and leave to marinate in the refrigerator for 2 hours, turning occasionally.
4. Grill or barbecue for 20 minutes or until cooked according to taste, basting occasionally with the marinade