going higher, page-20

from current JORC:

note: PAB appears to be the only good seam (bed)

PAB has 16% insoluble content




from old HFR announcement

JAVIER-PINTANO

The Javier-Pintano area contains sixteen (16) drill holes with available geological information. From high level preliminary modelling by North Rim, some areas appear to indicate 7.0 m thick intervals of potash mineralization (interbeds included).

The Resource was calculated using 10 different drill holes as shown in Figure 9-2, as some of the outlying holes did not intersect potassium minerals.

It should be noted that the presence of magnesium (“Mg”) is typically unfavorable in current technology flotation potash plants as concentrations over 0.25 % Mg may decrease the efficiency of the plant and additional processing may be required. In Saskatchewan current processing plant technology for solution mining can handle up to 0.51 % Mg, or 5.84 % carnallite (2.0 % MgCl2), in the mill feed. Conventional underground mines in Saskatchewan will avoid areas that have higher than 8.0 to 10.0% carnallite (3.43% MgCl2) due to mining instability issues

Assays for Javier-Pintano list a value for MgCl2 which can be converted to carnallite easily by multiplying by 2.91. Where present, the MgCl2 values are below 5% (14.6% carnallite) and are found as thin interbeds and local packages up to ~1.5 m. From a brief overview it would appear that the carnallite content within the exploration area is less pervasive than discussed in the regional geology of the Sierra del Perdón area, but further investigations may be necessary.

High insoluble content is noted in the Javier-Pintano area; 44% of the all samples which were reviewed by North Rim (which contain > 5% K2O) have an insoluble content of over 20%.

The insoluble content is very high throughout all of the assayed holes. Plotted in Figure 9-9 is a graph of all the assayed intervals, concluding that 44% of all samples containing greater than 5% K2O have an insoluble content of over 20% (denoted by the red ellipse). High insoluble content can complicate mining processes, and can be a limiting factor or possibly a fatal flaw to mining processes depending on mining method and nature of the insoluble occurrence




compare to another potash stock on the ASX

"Metallurgical testing was undertaken in 2011 to establish preliminary processing technology for the Project. Mineralogy analysis showed the sample was composed of 38% sylvite (24.2% K2O). Insoluble content was less than 1% and consisted of anhydrite. The sample received was categorized as coarsely intergrown sylvinite. The low insoluble content and the ease of liberation size of the Project ore compare favourably with the best examples from Saskatchewan, Canada and other producing areas of the world. This allows for high recovery and competitive processing costs.