Changeite-Ce (Cerium Changeite)

Author: Tianjiang说

Editor: Claude

Source: CCTV News / Yangtze Evening News

Site: https://cislunarspace.cn

Definition

Changeite-Ce (Cerium Changeite) is one of the two new lunar minerals discovered from Chang'e-5 lunar sample research, announced by the China National Space Administration (CNSA) on April 24, 2026 (the other being Changeite-Mg). As the third new mineral identified from Chang'e-5 samples, it is notably richer in the light rare earth element cerium compared to previously discovered Changeite.

Scientific Significance

Changeite-Ce holds the following scientific value:

  1. Records lunar evolution stages: Changeite-Ce records different stages of lunar evolution, enabling better understanding of the Moon's formation and evolutionary history
  2. Reveals lunar material composition: As a phosphate mineral rich in light rare earth element cerium, it provides new constraints on lunar magma evolution and volatile migration
  3. Enriches lunar mineral research: Together with Changeite-Mg and previously discovered Changeite, it forms a new system for lunar mineral research
  4. Supports future resource development: Provides scientific basis for lunar resource assessment and future exploitation planning

Occurrence Background

Changeite-Ce belongs to the same calcium rare-earth phosphate mineral family as Changeite-Mg, but the two differ significantly in rare earth distribution:

MineralRare Earth CharacteristicOccurrence
Changeite-CeRich in light rare earth element ceriumLunar basaltic fragments
Changeite-MgRich in magnesium and rare earth elementsLunar drilling basaltic fragments
Changeite (original)Calcium rare-earth phosphateLunar samples

References

  • China National Space Administration, Chang'e-5 Lunar Sample Research Latest Results, 2026-04-24
  • CCTV News WeChat Official Account
  • Yangtze Evening News, 2026-04-24