Resolution

United States· ArizonaDevelopment
Contained Copper
25.0 Mt
Average Grade
1.47%
Deposit Type
Porphyry Cu-Mo
Discovery Year
1994

Overview

One of the largest undeveloped copper deposits globally. Exceptionally high grade at >1km depth.

Geological Context

Host Rock: Quartz monzonite porphyry (Laramide)

Tectonic Setting: Continental arc

Geological Province: Basin and Range

Metallogenic Belt: Western US Porphyry Belt

Resources & Operations

Operator: Rio Tinto/BHP

Mining Method: Block Caving

Data Provenance

Source: Rio Tinto reports

Last Verified: 2026-01-15

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