# Goldgroup Mining investment in Luca Mining > Live situation record from CLSTR: https://clstr.news/situations/goldgroup-mining-investment-in-luca-mining > Updated: 2026-09-30T18:35:58.000Z. Sources: 5. Developments: 2. Goldgroup Mining has committed US$75 million to Luca Mining to facilitate the acquisition of the Cozamin copper and silver mine in Zacatecas, Mexico. This investment, provided through a private placement of subscription receipts, replaces a previous US$75 million equity backstop from Trafigura Pte Ltd. Upon completion of the acquisition and conversion of the receipts, Goldgroup expects to hold approximately 19.9% ownership in Luca Mining. As part of the agreement, Goldgroup will have the right to nominate two directors to Luca’s board, provided they maintain at least a 10% stake. Goldgroup intends to fund this commitment using existing cash, including proceeds from a recent oversubscribed US$121.8 million private placement. The purchase of Cozamin from Capstone Copper is valued at US$290 million upfront, consisting of US$275 million in cash and US$15 million in Luca shares, with additional contingent payments based on copper prices. The acquisition is expected to more than double Luca Mining’s projected 2027 production levels. The transaction remains subject to regulatory approvals and closing conditions. ## Timeline ### 2026-09-30: Goldgroup Mining to invest US$75 million in Luca Mining Goldgroup Mining will invest US$75 million in Luca Mining to finance the acquisition of the Cozamin copper and silver mine in Mexico, potentially securing a 19.9% stake in Luca Mining. 3 sources. https://clstr.news/cluster/goldgroup-mining-to-invest-us75-million-in-luca-mining ### 2026-09-27: Goldgroup Mining commits US$75M to Luca Mining for Cozamin mine acquisition Goldgroup Mining is investing US$75 million in Luca Mining to facilitate the acquisition of the Cozamin copper-silver mine in Mexico, aiming for a 19.9% ownership stake in Luca. 2 sources. https://clstr.news/cluster/goldgroup-mining-commits-us75m-to-luca-mining-for-cozamin-mine-acquisition --- Cite as: Goldgroup Mining investment in Luca Mining. CLSTR, https://clstr.news/situations/goldgroup-mining-investment-in-luca-mining