Gadzira shanduro yakaoma zvikuru yemutsara uyu Zvinyorwa zvizhinji zvinobvumirana kuti hammerscale inoumbwa nechimwe chimiro cheiron oxide.
Zvechokwadi, shanduro yakaoma zvikuru yemutsara uyu ndeiyi "Manyuko mazhinji anobvumirana kuti hammerscale inoumbwa nechimwe chimiro cheiron oxide, ne magnetite kuva chimiro chinogamuchirwa kazhinji, chinotungamirira kumunhu anozivikanwa wemagineti we hammerscale. "