Investor Presentaiton
Veladero - ASTER Mineral Models and Thermal (Silica) Response
Production from 2005-2017: 8.2 Moz Au and 16.6 Moz Ag from 319Mt at 1.09 g/t Au and 14.9 g/t Ag (from NI43-101 Technical Report, 2018).
M+I Resource (as of 31/12/2017): 2.6 Moz Au and 54.5 Moz Ag from 140Mt at 0.57 g/t Au and 12.1 g/t Ag.
Veladero
+405000 E
Limit of mapped
quartz-alunite alt.
Open-pit
(approx.)
+408000 E
+411000 E
Muscovite
95/98%tile
Pyrophyllite
95/98%tile
Jarosite
98%tile
Chlorite/
epidote 80%
+6753000 N
Thermal
Response
0.0130
0.0104
Figure 15: Apparent zonation of hydrothermal
alteration in the Veladero area, draped over the ASTER
thermal image, showing ASTER mineral models for
muscovite, pyrophyllite, chlorite and epidote and the
Sentinel 2 model for jarosite. Note that the ASTER
data was collected in 2001 prior to the start of mine
production in 2005. The Sentinel 2 data is from 2016
or thereafter. The pre-mine surface hydrothermal
alteration, as summarized by Holley (2012, CSM PhD
thesis), shows that the ASTER thermal response
delineates the silica / residual quartz-alunite alteration
at Veladero.
0.0078
0.0052
0.0026
0.0000
1000
2000
3000
100
+408000
+411000 E
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