- SMDI #
- 2181
- Current Showing Name
- Boom Lake Uraniferous Boulder Train
- Historical Showing Names
- Boom Lake Uraniferous Boulder Train
- Company Name
- Project Name
- UTM Easting (NAD83 Z13)
- 491974.3000
- UTM Northing (NAD83 Z13)
- 6397545.1600
- NTS Sheet
- 074H11
- TRM (Township-Range-Meridian)
- 100-20-2
- Primary Commodities
- Uranium
- Associated Commodities
- Iron
- Discovery Type
- Float Rock
- Status
- Mineral Location
- Geological Details
- In the summer of 1983, prospecting on the P-2N grid located the radioactive boulder train which comprises this showing. The showing is located just east of the north tip of Bermuda Lake and 0.3 mile (0.48 km) south of the P2 North Uranium Deposit (SMDI 2171).
The Boom Lake radioactive boulder train consists of a train of 96 altered sandstone boulders that have scintillometer readings that vary from 100 to 30,000 cps. The train is 75 m (246.1 ft) wide and over 300 m (984.3 ft) long. The majority of the boulders that comprise this train rest on a drumlin composed of locally derived till.
The sandstone alteration exhibited by the boulders which form this train, which is identical to the sandstone alteration at the BJ Deposit, includes bleaching, silicification, hematization (purple hematitic blotches), dravitization, and the development of clay minerals.
- Geological Domain
- Wollaston
- Host Rocks
- Host Minerals
- Hematite, Limonite
- Indicators
- Exploration History
- 12/10/1990 Between 1981 and 1983, SMDC completed a regional lake sediment survey that covered the showing area (AF 74H10-0060). A series of regional environmental baseline studies were also completed (AF 74H10-0061).
On 19 February 1983, the showing area was staked as CBS 8928 by Uranerz Exploration and Mining and Cameco. In the summer of 1983, SMDC completed a program of regional geological mapping, Quaternary mapping, stream and lake sediment sampling, and follow-up prospecting (AF 74H10-0059). The prospecting discovered the Boom Lake boulder train.
In 1984, SMDC completed DEEPEM, magnetic and gravity surveys over various portions of ML 5419 (AF 74H10-0063). In 1986, SMDC completed a DEEPEM survey over the Bermuda grid south of the showing and a bore hole PEM survey was completed on Bermuda Lake drill hole MAC-148 (AF 74H15-0035). In 1987, Uranerz completed prospecting, boulder sampling and UTEM, EM-37, gravity and magnetic surveys over CBS 8928 (AF 74H14-0022). In 1988, Uranerz completed UTEM and boulder geochemical surveys and follow-up drill holes RL-49 and 50 (AF 74H14-0024). No significant mineralization was encountered.
In 1989, a partnership involving Cameco (56.482%) and Uranerz (43.518%) completed ground TEM, gravity and magnetic surveys over the showing, a boulder sample survey and drill holes RL-61 and -65 (well southwest of the showing) on CBS 8298 (AF 74H14-0015). No significant values were returned.
In 1990, Cameco completed ground CSAMT, magnetic, gravity, UTEM, TDEM, VLF-EM, and resistivity surveys over the P2 grid (AF 74H-0046). Cameco also completed ground a TDEM survey which covered the showing and drill hole RL-69 midway between the showing and the P2 North Deposit to further test the P2 conductor (AF 74H11-0084).
In 1991, a Cameco-Uranerz partnership completed drill holes RL-75 to -79 to the south of the showing to test for an extension of the P2N conductor (AF 74H11-0085). The program was unsuccessful. On 18 September 1997, ML 5481 was converted to ML 5516.
Between 2000 and 2001, a Cameco-UEM Inc. partnership completed DC resistivity and bouger gravity surveys that covered the showing and "dry" drill holes RL-98 to -0103 were completed well west of the showing to test the C-5 conductor (AF 74H11-0100).
In 2002, a partnership involving Cameco, UEM Inc., and Cogema Resources Canada completed a ground gravity survey over the boulder train (AF 74H11-NE-0103). In the following year, the partnership flew an airborne magnetic gradiometer survey and completed a follow-up ground resistivity survey over the showing (AF 74H-0058). In 2004, the partnership completed a ground TDEM survey over the showing (AF 74H11-NE-0106).
- Production History
- Reserves and/or Resources