Summary:
- Researchers have discovered a new mineral in Japan's national stone, the Ōnusa stone, which is found in the Ōnusa River.
- The new mineral has been named "Amaterasu" after the Japanese sun goddess, due to its shimmering, golden appearance.
- This discovery provides valuable insights into the geological history and composition of the Ōnusa stone, which is an important cultural and natural resource in Japan.