v3.26.1

Payments, by Project - 12 months ended Dec. 31, 2025 - USD ($)	Fees	Total Payments
Total	$ 350,691	$ 350,691
Arena Minerals Chile
Total	140,966	140,966
Proyecto Pastos Grandes
Total	$ 560,416	$ 560,416

X

- Details

Name:	rxp_ProjectAxis=lar_ArenaMineralsChileMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	rxp_ProjectAxis=lar_ProyectoPastosGrandesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: