McMillan Lead-Zinc-Silver Deposit Geology in Yukon's Selwyn Basin

2026-03-25 updated geological report details the McMillan stratabound lead-zinc-silver deposit in the Yukon's Logan Mountains. The deposit, located 65 km northeast of Watson Lake, is hosted within Upper Proterozoic sedimentary rocks including argillite, sandstone, limestone, and massive sulphides. Two genetic models are proposed for its origin: hydrothermal replacement or seafloor precipitation.

Use Cases

• Classify mineralization types (concordant vs. discordant) based on described host rock lithologies like argillite and limestone.
• Analyze the spatial association of sulphide minerals (sphalerite, galena) with carbonate (siderite) for deposit modeling.
• Compare the proposed hydrothermal replacement and seafloor precipitation genetic models using described mineralogy and geologic setting.
• Map deposit locations using the provided geographic reference of 65 km NE of Watson Lake in the Logan Mountains.

Strengths

• Report provides specific geographic coordinates relative to Watson Lake (65 km NE).
• Includes detailed mineralogical descriptions of sphalerite, galena, and siderite.
• Presents two distinct genetic models (hydrothermal replacement and seafloor precipitation) for analysis.

Limitations

• Data is a descriptive geological report; no structured tabular data (rows/columns) is provided for quantitative analysis.
• Sample data and file size are unavailable, limiting immediate computational use.
• Information is specific to a single deposit case study, not a comparative regional database.

Provenance

Source

Government of Yukon

Collection Method

Geological survey and analysis report.

Time Range

Upper Proterozoic age (geological time period).

Freshness

Last updated 2026-03-25.

Geography

Logan Mountains, Yukon, Canada, 65 km NE of Watson Lake.