Sample ID

Composition Based on XRD Diffraction Pattern and Rietveld Refinement

QA/QC (Pure Calcite)

Calcite—100% (Figure 2)

D1

“Surface Zone”

(0 - 61 m)

Quartz—52.4%

Calcite—35.7%

Magnesioferrite—7.9%

Other—4.0%

D2

“Intermediate Zone”

(62 - 457 m)

Halite—74.3%

Sylvite—13.1%

Magnesium Calcite—12.6%

D3

“Deep Zone”

(458 - 884 m)

Halite—74.4%

Calcite—17.8%

Sylvite—7.4%

Quartz—0.3%