©2011 Beowulf Mining plc, Richmond House, Broad Street, Ely, Cambridgeshire. CB7 4AH
BEOWULF MINING plc
Uranium
The Geddaur licences, acquired from Agricola in September 2009, are located east
and south of the city centre of the municipality of Arjeplog in the Norrbotten county
of Northern Sweden. The total licence block of 131.5 square kilometres, comprising
Geddaur No. 1, 2 and 3 licences, joins up with our Ballek licence block. It has
excellent infrastructure and easy field area access via a number of good forest roads.
The licence areas have high potential to hold two separate styles of mineralisation,
one type being copper-
Uranium targets
Uranium targets of high potential are located within the Geddaur 1 and 2 licences.
The targets were initially discovered in the 1970s by the Geological Survey of Sweden
(SGU) as a result of follow up surveys from previous discoveries of several hundred
radioactive boulders forming a trail several kilometres long extending in a NW-
SGU’s early work included limited trenching through the glacial overburden of the
proximal part at the up ice direction of the boulder trail which revealed uranium
bearing bedrock over 55m in length. The mineralised zone coincided well with a notable
magnetic anomaly. However, at the time of the surveys water inflow from surrounding
bogs restricted proper sampling and further intended trenching. Some incomplete sampling
of the bedrock of the trench returned grades varying between 0.05-
The uranium phase, although not determined, is probably uraninite, and occurs as disseminations in a foliated, hematised, granitoid host bedrock. Outside the trench, the local bedrock is poorly known as there are only a few outcrops registered in the glacial till and bog covered area. Regional geological maps indicate that the area is occupied by acid, metavolcanic rocks with minor intercalations of mafic rocks. Younger granites intrude the volcanic rocks.
Detailed drainage sediment geochemistry has outlined very strong responses of uranium coinciding with high molybdenum and silver in minor drainages close to the local trench and in the surrounding streams. The magnetic anomaly as noted from the historic ground geophysical survey is seen to extend for some kilometres through the licence area.
Although a large drill programme was intended to be conducted in the 1970s by the SGU no drilling has yet been carried out on the prospect.
Beowulf plans to further evaluate these uranium prospects in the near future. It is initially envisaged drilling approximately 10 diamond drill holes for a total of around 1,000m centred on the pronounced magnetic anomaly, which extends for more than three kilometres through the Geddaur 1 licence area. Initial drillholes should be targeted to cut the uranium mineralisation at depth underneath the 55m mineralised stretch of the trench. Such an initial drill programme will best be performed in winter springtime conditions when the bogs are generally frozen and snow cover simplifies drill rig access.
There are a number of further subtle magnetic anomalies in the area which are associated
with weak EM anomalies. It is currently intended that these will be further evaluated
by a soil radon cup survey to be carried out in early spring (May-
Manakjaure
The Manakjaure uranium prospect is located approximately 85km northwest of the city centre of the municipality of Jokkmokk in the Norrbotten county of Northern Sweden. It covers a lightly forested area of 5.5 square kilometres and access is via a forest road from the east.
In general, the geology of the Manakjaure area is dominated by sedimentary rocks
of recrystallised feldspar-
A pronounced feature, noted from historic magnetic surveys, is the presence of a
major concordant-
The prospect was discovered by the SGU after several high grade radiometric boulders, forming large fields and trails, were located in the area with grades reaching 0.1% of uranium. In the early 1970s gridline magnetic surveys were carried out over parts of the area and in the mid 1970s an initial drill programme was carried out at two locations at the proximal parts of two identified boulder trails. The drilled targets, about 1.5km apart, were also lying on a major magnetic anomaly associated with the diabase. The magnetic anomaly, however, is of substantial length and as such only a very limited section was drill tested.
The historic drilling confirmed the presence of uranium in the generally biotite rich pegmatite, at both locations, lying closely associated with the diabase. Numerous zones of fracturing and shearing were also noted. In the southern target area, four holes penetrated the uranium bearing pegmatite. Average grades in these mineralised drill cores were about 800 ppm of uranium. A 0.5 metre section in one drill hole contained 0.35% uranium.
The historic drilling was confined to some narrow sections of the diabase where fields
of radiometric boulders had been located at the glacial till surface. However, there
are a number of extremely high-
To date, the full extension of the diabase, as identified by groundmagnetic survey, and its surrounding contact zones with quartzite/pegmatites is believed to form a viable economic target for uranium. The numerous zones of fracturing and shearing along the diabase structure may also locally form high grade pockets of uranium. There are also indications of parallel uranium bearing structures present within the licence area.
Based on the available positive historic results, further drilling of this prospect is planned in due course. Although potential further drill sites have been selected, mainly based on available studies of the ground magnetic survey data, Beowulf is currently planning for an initial soil radon cup grid survey to be carried out all along the anomalous magnetic zones.
High soil radon areas will better define future drill sites.
A brief presentation is shown here >