The Aupper occurrence is located on the north facing slope of a ridge south of Croydon Creek (Property File - Canadian Superior Exploration Limited, Maps from Company Files, c. 1973).

The occurrence is hosted in Upper Triassic Takla Group volcanics consisting of basic to intermediate flows, volcanic breccias, tuffs and minor sediments. Immediately to the south of this occurrence is a small Late Triassic Alaskan-type ultramafic intrusion (informally named the Croydon Ultramafic stock). To the west lies a northwest trending monzonite to granodiorite intrusion (Assessment Report 21521).

The major structures in the area are the north to northwest trending Ingenika and Dortatelle faults which lie to the west of this occurrence. Smaller, more localized, faults trend northwest.

There is very little information about this occurrence other than it contains gold and copper (Property File - Canadian Superior Exploration Limited, Maps from Company Files, c. 1973) and is hosted in andesitic porphyry and subvolcanics (Assessment Report 21521).

There are numerous chalcopyrite occurrences within 750 metres to the northwest and 300 metres to the southeast. A 3-centimetre quartz vein, containing chalcopyrite and malachite, assayed 2.7 grams per tonne gold and 43.5 grams per tonne silver (Assessment Report 21521). This vein lies approximately 500 metres to the northwest of the plotted location and trends west-northwest. Copper mineralization typically occurs in quartz veins and shears that trend northwest to northeast. These quartz veins and shears cut intrusive and volcanic rocks.

Refer to Croy (094D 015) for related information on the Croy-Bloom property.