Clear Sky Lithium Corp. announced clay speciation lab results from surface sampling at its ELi property located in Nevada's Little Smoky Valley. The four samples were submitted for a quantitative X-Ray Diffraction (XRD) and clay speciation whereby ActLabs determined the relative abundance of clay minerals.

The quantities of the crystalline mineral phases were determined using the Rietveld method based on the calculation of the full diffraction pattern from crystal structure data. The amounts of the crystalline minerals were recalculated based on a known percent of corundum and the remainder to 100 % was considered poorly crystalline and X-ray amorphous material. The relative proportions of the clay minerals in the < 4 µm size fraction were calculated using the ratios of the basal-peak areas.

Notes: All samples were sent to Activation Laboratories (ActLabs) located in Ancaster, Ontario. ActLabs quality systems conform to requirements of ISO/IEC Standard 17025 guidelines and meets requirements outlined in NI 43-101. For the quantitative XRD analysis, a portion of each pulverized sample was mixed with corundum and packed into a standard holder.

Corundum was used as an internal standard. For the clay speciation, a portion of the samples was dispersed in distilled water and the clay minerals in the <4µm size fraction separated by gravity settling of particles in suspension. The <4µm size fraction was analyzed dried and after treatment with ethylene glycol.

The X-ray diffraction analysis was performed on a Bruker D8 Endeavour diffractometer equipped with Cu X-ray source. The PDF4/Minerals ICDD database was used for mineral identification.