These showings, on the southeast coast of Moresby Island, are between Harriet Harbour and Ikeda Cove from about 152 to 183 metres elevation on the Ikeda side of the ridge. The deposit is on the Adonis claim, Lot 1865, and extends onto the Sweet Pea claim, Lot 68 (part of the Lily Group, 103B 028). The Adonis claim is held by mineral lease by Jedway Iron Ore Limited but the Sweet Pea is held by Falconbridge Nickel Mines Limited and any ore mined on it will be on a royalty basis to that company.

The Adonis showing was probably discovered between 1906 and 1908 although there is little record of the early history. In 1912 the claim was Crown-granted to Messrs. P. Drummond, R.A. Trethawey and J.0. Trethawey.

Silver Standard Mines Limited carried out the first extensive prospecting by reconnaissance magnetometer survey and then drilled 13 EX holes totalling 329 metres in 1959 and 1960. Later Jedway Iron Ore Limited mapped it in detail in 1964 and drilled 9 AX holes totalling 508 metres. This work proved the presence of a small orebody. A kilometre of road was built to connect with the Jessie Mine (see 103B 026) and a pit prepared for production which began in September 1964. In 1965 additional drilling that totalled 333 metres in five AX holes in a line extending into the Sweet Pea claim proved an additional 124,284 tonnes of ore that has a reasonable stripping ratio.

In 1985 Falconbridge Limited conducted geological mapping and geochemical surveys in the area.

The Upper Triassic Karmutsen Formation (Vancouver Group) consisting of basaltic greenstone, is overlain by the Upper Triassic Sadler Formation (Kunga Group), consisting of 30 metres of limestone, striking 075 degrees and dipping 45 degrees north. The orebody occurs along the contact between the Karmutsen and Sadler formations and is bounded by steep 065 degree striking pre-ore faults about 55 metres apart. There is also a sill-like body of diorite porphyry and minor diorite at the contact.

Mineralization, consisting of massive magnetite with pyrite, chalcopyrite and skarn minerals, replaces mainly the greenstone, but also the limestone and diorite porphyry. The latter is altered to skarn with abundant garnet.

In 1964 the estimated potential of the Adonis deposit was 124,042 tonnes with 35.0 per cent magnetic iron. In 1965, additional drilling onto the adjacent Sweet Pea claim proved an additional 124,284 tonnes of ore with a reasonable stripping ratio (Energy, Mines and Resources RESFILE - Adonis).

In 1964, 96,844 tonnes of ore grading 35.0 per cent iron was mined. Production figures are included with the Jessie Mine (103B 026). See also Lily (103B 028) and Rose (103B 029).