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File Created: 17-Aug-1987 by Larry Jones (LDJ)
Last Edit:  08-Oct-2021 by George Owsiacki (GO)

Summary Help Help

NMI
Name IRA Mining Division Atlin
BCGS Map 104N074
Status Showing NTS Map 104N14W
Latitude 059º 47' 29'' UTM 08 (NAD 83)
Longitude 133º 15' 26'' Northing 6629465
Easting 597812
Commodities Uranium Deposit Types I15 : Classical U veins
Tectonic Belt Intermontane Terrane Plutonic Rocks, Cache Creek
Capsule Geology

The Ira occurrence is located just west of the north end of Surprise Lake, about 35 kilometres northeast of the community of Atlin.

The area is underlain by alaskite of the Late Cretaceous Surprise Lake batholith (Surprise Lake Plutonic Suite) and by a few late porphyry and basaltic dikes. Weak to strong gossans are locally present in the area.

Structurally controlled mineralization, consisting of uranium, fluorite, and sulphide minerals, is associated with a gossan within the alaskite. Test pits yielded rock assays up to 0.04 per cent uranium (Assessment Report 6426).

In 1977, Union Oil Company of Canada Ltd. conducted a geochemical and radiometric survey over parts of the Ira claims. The work was part of a larger program of uranium exploration covering the Surprise Lake batholith and surrounding area.

In 2006, Aldershot Resources Ltd. carried out a spectral analysis program on an area covering several occurrences (D & D (104N 108), Ira 6 (104N 109), Mistake (104N 107), Ira, Ira 5 (104N 088) and Pato 1 (104N 106)). The program involved acquisition of satellite spectral data available from NASA, reconfiguring this data into a workable format, geo-referencing to TRIM map bases and extensive and rigorous classification of the data in search of indicators that might lead to the discovery of uranium mineralization.

Bibliography
EMPR ASS RPT 2387, *6426, 6885, 7598, 7610, 7733, 28395
EMPR COMM FILE Uranium
EMPR EXPL 1977-241; 1978-271
EMPR MAP 52 (with notes)
EMPR OF 1996-11
GSC MAP 1082A
GSC MEM 307
GSC OF 864

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