- SMDI #
- 2058
- Current Showing Name
- Abraham Bay Radioactive Diabase Dykes
- Historical Showing Names
- Abraham Bay Radioactive Diabase Dykes
- Company Name
- Project Name
- UTM Easting (NAD83 Z13)
- 376826.6100
- UTM Northing (NAD83 Z13)
- 6374043.5000
- NTS Sheet
- 074G06
- TRM (Township-Range-Meridian)
- 98-07-3
- Primary Commodities
- Uranium
- Associated Commodities
- Cobalt, Copper, Nickel
- Discovery Type
- Outcrop Grab
- Status
- Occurrence: Primary Exploration
- Geological Details
- The area of the showing was mapped by Gilboy and Ramaekers as lying within the Athabasca Basin. Outcrops are sparse but when present consist of Precambrian-aged dark green, medium to coarse grained and massive diabase.
The showing consists of numerous occurrences of radioactive zones within diabase dykes. In 1979, 15 sites were located and, in 1980, a further 80 sites were located. Mineralization is usually confined to altered and radioactive zones, which are a few centimeters thick, along joint planes. Radiation is present over small areas that seldom exceed 1 m (3.3 ft) in length and less in width. The radioactivity exhibits a weakly defined preference for joints trending northwest (parallel to the length of the diabase). Well-developed, low temperature alteration is exhibited and consists of pyroxene converted to carbonate and hematite, saussuritized feldspars, and oxides converted to leucoxene. The resulting altered rock is soft and pale grey.
The area of the showing returned a scintillometer high of 1500 cps and was subsequently assayed. The maximum assay returns are more nickel-rich than uranium-rich. Maximum assay values are given below.
PPM PPM PPM PPM
U CU NI CO
____________________________
237.5 1680 1150 310
- Geological Domain
- Mudjatik
- Host Rocks
- Host Minerals
- Indicators
- Exploration History
- 7/20/1989 The earliest available records pertaining to the area of the showing show that it was staked as part of Amerada Petroleum Corporation Permit No. 1, owned by Amerada Hess Corporation by at least 1968. In that year a program consisting of diamond drilling, an airborne radiometric survey and a geological and radiometric check of anomalies was completed (AF 74G06-0003). Results were not overly encouraging and the permit lapsed soon thereafter.
Records indicate that it then came under the jurisdiction of V. Paulger and Associates Permit No. 1, but no work was reported.
The area was mapped by Ramaekers and Gilboy of the Saskatchewan Government in 1977; as well a reconnaissance geochemical survey was done over the area by C.E. Dunn of the Saskatchewan Geological Survey.
CBS 5248 was staked by Marline Mineral Exploration on 5 December 1977 and this property covered the showing. Early in 1978, they began an exploration program which consisted of airborne geophysics, prospecting, reconnaissance geological mapping, and lake water and sediment sampling (AF 74G06-0012). The next year, exploration continued prospecting, geological mapping, lake sediment and soil sampling, ground EM and magnetic surveys, trenching, helicopter-borne radiometric and VLF-em surveys, and airphoto interpretation of the claim block (AF 74G06-0021). Several radioactive zones were noted during this program but none were sufficently mineralized to warrant a showing. It was not 1980, with continued exploration, that zones worthy of showing status were located by a program involving detailed and reconnaissance prospecting and mapping, ground EM and magnetic surveys, biogeochemical sampling, airborne EM (input) and magnetic surveys and aeromagnetic interpretation of the features located within the claim block (AF 74G06-0022).
In 1981, Marline completed its exploration program with an anomaly evaluation, ground VLF-EM and magnetic surveys, biogeochemical surveys, a transient EM survey (AF 74G06-0023) and gravity survey (AF 74G06-0024). No further exploration was attempted; CBS 5248 lapsed 1 May 1986 and the area has remained open since.
- Production History
- Reserves and/or Resources