Black Lake Uranium Property

Black Lake Uranium Property

Northern Saskatchewanby

Delio TortosaGeological Consultant

January, 2015

Athabasca Basin Location MapSaskatchewan

Uranium Deposits and Mines, N. Sask.

McArthur River

Cigar Lake

Key Lake

Beaverlodge Area

Cluff Lake

Rabbit Lake

Snow

bird

Tecto

nic Z

one


Nisto Uranium Mine

Centennial Deposit

Distribution of Mineral Dispositions Athabasca Basin

Black Lake Property

Regional Geology and Geophysics

Geological Map of the Athabasca Basin

Regional Magnetic Field, Northern Saskatchewan and Alberta

after Card et al. 2007

50 Km

Regional Gravity 1VD and the Athabasca Basin

Snow

bird

Tec

toni

c Zo

ne

50 Km

Athabasca Basin, Late Regional Faults, and Gravity Lows

Black Lake

Property

Low Gravity Zones

WMTZ

Black Lake PropertyLand Tenure

Black Lake Area Mineral Dispositions

Black Lake Property

Nisto MineBlack Lake Uranium Prospect

1883,009.053Total

26-Jan-1726-Oct-14861374.305MC00002844Black Lake DT 4

18-Dec-1611-Sep-1432514.119MC00002584Black Lake DT 3



Due DateEffective

DateUnitsArea (Ha)ClaimName

Black Lake Property

Local Geology, Geophysics and Geochemical Surveys

Black Lake Area Geology

Nisto MineBlack Lake Uranium Prospect

Black L

ake F

ault

Plat

t Cre

ek F

ault

Black Lake Area Regional Gravity 1VD

Black Lake Area Regional Magnetic 1VD

Black Lake Area Regional Alteration Trends

Detailed Geology, Geophysics and Geochemical SurveysBlack Lake Property

Black Lake PropertyLocal Geology

Manitou Falls Formation

Lazenby Lake Formation

Wolverine Point Formation

Black Lake PropertyGravity Vertical Gradient Survey

Black Lake PropertyMagnetic Vertical Gradient Survey

Black Lake PropertyMegaTEM Survey Decay Constant (Tao)

Black Lake PropertyZTEM Survey 180 Hz

Black Lake PropertyGround Fixed Loop TDEM Survey

Surface Geochemical Exploration and

Diamond DrillingBlack Lake Property and Area

Dickite + Kaolinite ContentHistorical Drill Holes

JNR Resources 1998 and 2008

Illite ContentHistorical Drill Holes

JNR Resources 1998 and 2008


JNR DDH Clay Alteration

JNR Historical DDHK2O/Al2O3 Ratio

Longitudinal Section

BM-2 (SMDC 1979)

BL-08-104 (JNR 2008)

BL-08-103 (JNR 2008)

BL-08-101 (JNR 2008)

Bla

ck L

ake

Faul

t

Unconformity

Unconformity

Athabasca Sandstone

Basement

Basement

Athabasca Sandstone

2 km 1 km

SW NE

Black Lake Property

After Wright and Potter, 2014

After Alexandre et al., 2012

Centennial Uranium DepositPb 207/206 Isotopic Ratios

Pb 207/206 ratio decrease with

increasing depth

Pb 207/206 ratio decrease with increasing

uranium content

Pb 207/206 ratios in basal Athabasca SandstoneBlack Lake area

3D visualizationSummary and

Recommendations

DEM, Black Lake Area, Looking NE

Gravity Gradient Tzz, Black Lake Area, Looking NE

Measured Magnetic Vertical Gradient draped over

Gravity Gradient Tzz, Black Lake Area, Looking NE

ZTEM 45 Hz overlain on Garvity Gradient Tzz, Black Lake Property, Looking NE

Summary• Airborne geophysical surveys have identified a major lithotectonic boundary

which is thought to be the Snowbird Tectonic Zone and associated late brittle faults,

• Boulder and outcrop sampling have identified a regional alteration zone which follows the NE trend of Black Lake and regional structures,

• Drill holes have verified a strong illite signature reflective of a large-scale hydrothermal system within the regional alteration zone,

• Anomalous pathfinder elements and uranium have been identified in the basal sandstone of the Athabasca, Manitou Falls Formation, along with anomalous Pb 207/206, indicative of a concentrated uranium source,

• ZTEM and ground TDEM surveys have identified a conductive zone occurring in a gravity trough at the transition zone represented by the Snowbird Tectonic Zone and associated structures (Black Lake Fault).

• The Black Lake Property reflects all the characteristics identified above, including a 7 km long untested conductor.

Recommendations• Complete modeling of the various geophysical surveys covering the

Black Lake Property

• Establish a structural and geological model based on geophysics,geochemistry and geology of the area

• Sample and analyse the 2008 JNR drill holes for Pb isotopic signatures (if the drill core is still available)

• Seismic survey to locate major structures and unconformity offsets

• Continue with the drill program initiated by JNR to test the conductive zone

• Complete comprehensive down-hole geophysical surveys along with lithogeochemical and isotopic analyses, and analysis of clay mineralogy

• Joint Venture with a major uranium producer and acquire a skilled exploration team

Knowledge Gaps• How significant is the role of regional structures

in the development of large scale uranium-bearing hydrothermal systems in/near the Athabasca Basin?

• There are a limited number of examples of large, high-grade uranium deposit discoveries at significant depths which provide justification for deep drilling programs (Centennial, Shea Creek).

(after Marlatt and Kyser, 2011)

Athabasca Basin Uranium Exploration ‘Learning Curve’

Contact Information

Delio Tortosa, P.Eng., M.Sc.Geological Consultant

Tel: 705 946-1040Cell: 705 971-4768

Email: [email protected]

The Black Lake Uranium Property is available for option

Business

Black Lake Uranium Property