saltpetre or saltpeter icon, white line s. alchemy icon. basic mystic s. sign on

abstract alchemic alchemy astrology background basic black chemistry circle clean concept creative design element elements energy environment esoteric geometric geometry graphic ground harmony icon illustration isolated line logo magic modern molecular mystery mystic natural nature nitrate occult particle physics potash potassium representing sacred salt saltpeter saltpetre science sign structure style symbol symbols technology vector white wiccan