Akasakaite
Akasakaite-La
Akasakaite-La is a mineral with the formula (CaLa)(AlAlMn2+)O[Si2O7][SiO4](OH)[1]. It has a dark brown color, a vitreous luster, a specific gravity of 4.050[1], and a monoclinic crystal system, belonging to the allanite group within the Epidote supergroup. It is found at the Mogurazawa mine in Kiryu City, Gunma Prefecture, Japan[1]. The name follows the rules of the epidote supergroup, honoring Masahide Akasaka (b. 1950), a professor at Shimane University, Japan[1]. Its density is approximately 4.050 g/cm3[1]. Akasakaite-La is a newly discovered mineral within the allanite group.
Akasakaite-Ce
Unlike Akasakaite-La, this mineral's formula is (CaCe)(AlAlMn2+)O[Si2O7][SiO4](OH)[2]. It is similar to Akasakaite-La, except for its specific gravity, which is 4.055[2].
Root
- Akasakaite is a root mineral discovered at the Mogurazawa mine. For example, vanadoakasakaite-(Ce), vanadoakasakaite-(La), ferriakasakaite-(Ce), ferriakasakaite-(La), manganiakasakaite-(Ce), and manganiakasakaite-(La) are also related minerals.
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- ↑ 1.0 1.1 1.2 1.3 1.4 "Akasakaite-(La)". www.mindat.org. Retrieved 2026-02-21.
- ↑ 2.0 2.1 "Akasakaite-(Ce)". www.mindat.org. Retrieved 2026-02-21.
