The O Zone property is located eight kilometres east of the Little Tahltan River, and within a kilometre of the Hat property (MINFILE 104J 021).

The O Zone alkalic-type gold-copper porphyry prospect is underlain by a thick sequence of Upper Triassic Stuhini Group porphyritic andesites and bedded tuffs which have been intruded by a dioritic-monzonitic stock of probable Middle to Late Triassic age.

In late 2020, Doubleview Gold Corp's drill hole H-037 became the first hole drilled into a previously untested IP chargeability target. The drill hole is 750.1 metres in length, extending 375 metres laterally and 650 metres vertically. It was collared 1460 metres west of the apparent center of Doubleview's Lisle Zone (104J 068).

O zone characteristics are described as having sulphide mineralization throughout. The mineral assemblage includes chalcopyrite, magnetite, pyrite, quartz and possibly chalcocite. The rocks contain porphyry-style sulphide and rock alteration suites. High silica (quartz) content occurs in stockwork veins and in fractures which is reported to be a significant difference from the Lisle Zone.

See Lisle (104J 068) for related geological and work history details.