Lopa tioata eleele, foliga: lapotopoto manino e leai se lanu, lamolemole ma lapotopoto, e aunoa ma ni pupuni po'o ni mea leaga.
Fuafua fa'a'amilosaga: fua fa'ata'amilosaga ≥ 80%;
Malosi: 2.4-2.6g/cm3;
Fa'asinomaga fa'asaga: Nd ≥ 1.50;
Tulaga: tioata calcium calcium, mea o le SiO2 > 68%;
Malosi fa'amalosi: > 1200n;
Malosi o Mohs: 6-7.