Quartzite is very durable and needs minimal maintenance to keep it looking great.
Use a lint-free cloth or paper towel and a specially formulated granite cleaning product regularly to clean the counter, then dry the area with a separate clean cloth or paper towel. Do not use common abrasive cleaners or that contain vinegar, bleach, ammonia, lemon juice, orange, or other citrus foods, which can destroy the protective sealant on the granite.
Keep your quartzite protected from dirt buildup and staining, and seal them often with a stone sealer like Stonetech Bulletproof®. Some owners seal their counters every year.