Tara yemarasha inoiswa mumhando nhatu: kutonhora kwemarasha tara, pakati-tembiricha marasha tara, uye high-tembiricha marasha tara.
Tara yemarasha ine density inochinja pakati 1.17 uye 1.19 magiramu pa cubic centimita, kushandura kusvika kune 1.17 ku 1.19 matani pa cubic mita.
Mukuenzanisa, iyo density yebiotar inowanzogara yakatenderedza 1.2 magiramu pa cubic centimita, zvinoenderana ne 1.2 matani pa cubic mita.