In most geologic materials, zircon is the dominant host of hafnium (>10,000 ppm) and is often the focus of hafnium studies in geology.
Useimmissa geologissa materiaaleissa zirkon on hafniumia hallitsevana isäntänä (>10,000 ppm) ja on usein hafniumia koskevien geologisten tutkimusten kohteena.