The Nabs 30 Fr occurrence is located on the east side of Schaft Creek approximately 62 kilometres upstream from the confluence with the Stikine River.

The showing is located along the eastern margin of the Middle Jurassic salmon pink granite to quartz monzonite of the Yehiniko pluton which lies in the middle of the north trending Jurassic- Triassic Hickman batholith. The granite contains both hornblende and biotite and weathers to a distinctive orange to tan colour. To the east of the pluton is a thick succession of fairly non- descript intermediate to mafic flows, tuffs and volcanic breccias with lesser sediments. The volcanic rocks are not highly deformed although bedding attitudes do vary considerably. Augite porphyritic dykes and sills discordant to bedding commonly cut through the volcanic pile. Granitic to quartz monzonite plugs and apophyses from the main pluton are also common in the volcanics. East trending olivine-bearing basaltic dykes are abundant in the area and are likely related to the Late Tertiary Mount Edziza volcanic complex.

Mineralization is porphyry-style and consists of low-grade disseminations and stockworks of pyrite, chalcopyrite, bornite and minor molybdenite hosted in highly fractured volcanic rocks. Silicification and epidote alteration are common along fractures.

Exploration work done on the property in conjuction with work done on the adjacent Schaft Creek deposit (104G 015) has outlined 90.7 million tonnes in the proven category grading 0.337 per cent copper and 0.047 per cent molybdenum; gold concentrations are low (Northern Miner - January 3, 1974).