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140 <br /> --- 1:1 Line <br /> O Aphanitic Phonolite- Phase 2 <br /> ■ Breccia- Phase 2 <br /> O General Precambrian - Biotite Schist/Gneiss- Phase 2 <br /> 120 p Lamprophyre- Phase 2 <br /> Q Phonolite Breccia- Phase 2 <br /> • Porphyritic Phonolite- Phase 2 <br /> 100 <br /> 0 80 <br /> O <br /> U <br /> 2 <br /> i <br /> Y_ <br /> Q 60 <br /> z <br /> O ■ <br /> 40 Acidity in the NAG test samples below <br /> the 1:1 line is likely under-represented <br /> because of incomplete sulfide oxidation <br /> 20 <br /> zo <br /> ■ O <br /> 0 <br /> 0 20 40 60 80 100 120 140 <br /> ABA NAG (kg H2SO4/0 <br /> PROJECT N0. 4059 _-� <br /> BY AJJ ' <br /> CHECKED BTH . Net Acid-Generation Potential Based on <br /> DRAWN RJN � NAG and ABA Test Results <br /> DRAWING NAME RESULTS MAN <br /> �ITASCA`� <br /> DRAWING DATE 30 AUG 2019 CLIENT: FIGURE NO. <br /> REVISION DATE I Denver, Inc. Cripple Creek and Victor 3-4 <br />