In July 2010, AMEC conducted a property site visit at the Blue River Tantalum-Niobium Project as part of their geology and data verification.

1. Commerce Blue River Ta-Nb Project
July 11-16, 2010 AMEC Site Visit:
Geology and Data Verification (Part 2 of 2)

2. Geology and Data Verification (July 2010)
Structural Geology Folding Indicators
T
Left: Upper road outcrop exposure. Hanging wall meta-sediments with flat lying folds (view eastward).
Right: More open upright folds. Note the sub-horizontal fault plane striations in the upper left of the figure.
Structural geologist J. Kraft for scale (~ 6.0 ft tall)
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3. Geology and Data Verification (July 2010)
Structural Geology Folding Indicators
West East
(A) F08-150: 121.8m to 129.8m.
Indications of folding include
asymmetric parasitic folds with short
and long limbs bracketed by sub-
horizontal compositional layering.
Tigmatic folds are also noted .
(A)
(B) F08-150: 143.5 m and 147.0 m,
(B) high and low angle layering
indicating possible fold closures.
(C)
(C) F08-151: 204.0 m to 204.5 m
Indications of folding include
transition from a repetition of
carbonatite to biotite-quartz
gneiss and back into
carbonatite.
Upper carbonatite has a
contact at a high angle to core
axis indicating that it is a flat
lying contact.
Middle gneiss has trend of
compositional layering with
high - to low - to high angles
Note: Next three slides show core photos for (A), (B) and (C). relative to core axis. bulls-eye
appearance to the layering.
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4. Geology and Data Verification (July 2010)
Structural Geology Folding Indicators
(Location A on cross-section)
CL: Sub-vertical drill hole with sub-horizontal T
compositional layering at a high angle to core axis
P
Left: hole F08-150: 121.8m to 129.8m. HQ diameter diamond drill core. Hole was drill vertical. Compositional layering of biotite-quartz gneiss
is typically at a high angle to the core axis indicating a sub-horizontal attitude when related to the sub-vertical dip of the drill hole. Top of hole
is towards the top left of photo.
Right: F08-150: 125m. Indications of folding include asymmetric parasitic folds with short and long limbs (P) bracketed by sub-horizontal
compositional layering. Tigmatic folds (T) are also noted .
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5. Geology and Data Verification (July 2010)
Structural Geology Folding Indicators
(Location B on cross-section)
Note: Indications of folding include high and low angle layering indicating possible fold closures.
Top of hole is towards the top left of photos. Left: F08-150: 143.5 m. Right: F08-150: 147.0 m
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6. Geology and Data Verification (July 2010)
Structural Geology Folding Indicators
(Location C on cross-section)
Towards top of hole
Carbonatite
Carbonatite Towards bottom of hole
Note: F08-151: 204.0 m to 204.5 m (top to bottom)
Indications of folding include transition from a repetition of carbonatite to biotite-quartz gneiss and back into carbonatite. Upper carbonatite
has a contact at a high angle to core axis indicating that it is a flat lying contact. Middle gneiss has trend of compositional layering with high -
to low - to high angles relative to core axis (dashed lines). Black box highlights a possible fold closure which gives a characteristic bulls-eye
appearance to the layering. Top of hole is towards the top left of photo.
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7. Geology and Data Verification (July 2010)
Structural Geology Folding Indicators
CF0612: Left: 31.7 m; Right: 179.0 m
Note: Indications of folding include transition from high -to low -to high angle layering indicating
possible folding. Dashed lines inserted to highlight the layering. Top of hole is towards the top
left of both photos.
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8. Geology and Data Verification (July 2010)
Carbonatite textures
Note: Carbonatite rocks with increasing deformation from left to right. Note the ferro-columbite minerals in figure second from
the right (samples courtesy of T. Chuddy)
Note 2: Aggregates of ferro-columbite +/- pyrochlore can reach up to 5 mm in size.
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9. Geology and Data Verification (July 2010)
Ta – Nb mineralization within carbonatite
Note: F08-150 162.0 m. Carbonatite host rock with dark red-brown opaque mineral ferro-columbite intergrown with semi-transparent
yellowish mineral pyrochlore which has a vitreous lustre. The dark green mineral is an amphibole named richterite.
Ferro-columbite at the Project is a non-radioactive iron-niobium-tantalum-rich mineral with the chemical formula (Fe, Mn) (Nb, Ta)2 O6
and pyrochlore is a niobium-rich mineral with the chemical formula (Ca, Na, U)2 (Nb, Ti, Ta)2 O6 (OH,F) (pers. Comm.., T. Chuddy)
Left: Aggregates of ferro-columbite +/- pyrochlore can reach up to 5 mm in size.
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10. Geology and Data Verification (July 2010)
Ta – Nb mineralization within carbonatite
Note: CF0612 - 137.0 m. Carbonatite host rock with dark red-brown opaque mineral ferro-columbite. The dark green mineral is an
amphibole named richterite. Magnetite (Mt) is commonly noted associated with calcio-carbonatite. Magnetite and pyrhhotite are
magnetic minerals within the rocks at the Project that should be considered for down-hole surveying readings and instrumentation.
The circled mineral labeled with “AP” is apatite.
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11. Geology and Data Verification (July 2010)
Ta – Nb mineralization within carbonatite
The End
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