technical report on the nechalacho deposit, thor lake project ...

Figure 17-4 Density Measurements ALS-Chemex Versus Avalon
Fitted Line Plot
Wax/Water = - 0.00899 + 1.009 Avalon
3.50
S 0.0227097
R-Sq 98.9%
R-Sq(adj) 98.9%
3.25
Wax/Water
3.00
2.75
2.50
2.50
2.75
3.00
Avalon
3.25
3.50
CAPPING
Avalon did not cap any of the assay values prior to compositing and interpolation. This follows
previous practices.
DATABASE VALIDATION
Avalon performed a random check of the accuracy of the values in the database (for 2010 drill
program) by comparing these values to those on the Assay Certificates (received directly from
the laboratory). Previous database validation has been undertaken by both Scott Wilson RPA
and Wardrop for previous years. The database verification indicated that, in the opinion of the
authors, the database was acceptable for mineral resource estimation purposes.
BLOCK GRADE ESTIMATION
A block model was created to cover the known geological extents of the deposit; the parent
blocks were sub-blocked (Table 17-11). Geological solids were created using the upper and
lower surfaces for the UZ and BZ constrained by the bounding perimeter surface. Drill holes
were back-tagged with the appropriate solids name to facilitate statistical analysis and
interpolation.
Technical Report 43-101 – March 13, 2011 Page 17-15
Prepared by Avalon Rare Metals Inc.