Freegold Mountain U-Pb Age Constraints for Polymetallic Mineralization

Ten intrusive units provide new U-Pb age data bracketing polymetallic mineralization in the Freegold Mountain project area. The data indicates economically important mineralizing events occurred over a period of at least 40 million years. The dataset is published by the Government of Yukon and was last updated in April 2026.

Use Cases

• Modeling the timing of polymetallic mineralization events based on intrusive unit ages.
• Correlating structural corridors for Au mineralization based on feldspar porphyry dyke ages (~105-104 Ma).
• Studying the sequence of volcanic events based on andesitic (~77 Ma) and rhyolitic (~75 Ma) dyke ages.
• Investigating the relationship between intrusive rock emplacement (~107 Ma monzodiorite) and subsequent mineralization.

Strengths

• Age data for ten intrusive units provides a multi-point temporal framework.
• The dataset explicitly brackets mineralization timing over a period of at least 40 million years.
• Specific age constraints are provided for distinct mineralization phases and intrusive events.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset likely contains only geochronological data; geological context may require external sources.

Provenance

Source

Government of Yukon

Collection Method

U-Pb dating of intrusive rock units.

Time Range

Mid- to Late Cretaceous, spanning at least 40 million years.

Freshness

Last updated 2026-04-17 16:08:48.459098; freshness should be verified.

Geography

Freegold Mountain project area, Yukon, Canada.