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Lac Porphyre

Typical Geophysical response for a vertical sulphide lens

The Porphyre Lake deposit is a barren massive sulphide deposit in the Matagami Mining Camp, North Western Quebec, Canada.

A well defined 2 mgal residual Bouguer anomaly is associated with the sulphide lens.

A 1000 gamma magnetic anomaly also marks the location of the lens.

The Sulphide lens produces a classical FDEM (HLEM) profile for a subvertical conductor.