Allendeite
A scandium zirconium oxide named after the Allende meteorite.
Key facts
- Formula
- Sc4Zr3O12
- Family
- Oxides
- Crystal system
- Trigonal
- First described
- the Allende CV3 chondrite, 2014
First found in a rock from space
Allendeite was described in 2014 from an ultra-refractory inclusion in Allende and named after the meteorite.
What it is
Allendeite is an oxide of scandium and zirconium, two of the most refractory elements. It is one of the highest-temperature minerals known from the solar nebula.
Where it is found
It occurs as micrometre-sized grains in an ultra-refractory inclusion in Allende, together with other scandium- and zirconium-rich minerals.
How it is recognised
It is identified by electron microscopy and diffraction.
Did you know?
Did you know?
Allende fell in Chihuahua, Mexico, on 8 February 1969, and more than two tonnes were collected.
Did you know?
Its fall just before the Apollo 11 landing meant that laboratories newly built for Moon rocks were ready to study it.