◄ Mg   B ▲   ▼ Sc   Si ►

Aluminium ∙ aluminium ∙ alluminio ∙ aluminio
group III: R₂O₃

• melting point: 660.37°C
• boiling point: 2519°C
• density: 2.702 g/cm³

minerals: Corundum Al₂O₃

After falling to Earth, atmospheric shielding protects the meteorite fragments from further ²⁶Al production, and its decay can then be used to determine the meteorite’s terrestrial age. — wikipedia

radioisotopes: Al-26 (T1/2=717 ka) cosmogenic