Thin Section Results ― Amended News Release Originally Dated
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Cascadero Copper
February 7th 2018
(TSXV‐ CCD)
Thin Section Results ― Amended News Release Originally Dated
January 23, 2018.
Cascadero (‘CCD or the Company”) is pleased to announce the results of a thin section study of
twelve (12) rock grab samples taken from the Company’s Sarita Este gold prospect, 70% owned
by the Company. Sarita Este is located in Sa lta province in northwest ern Argentina in close
proximity to First Quantum’s Taca Taca multi-billion tonne Cu-Mo-Au porphyry deposit.
Twelve (12) samples were sectioned. Eleven (11) of the samples are felsic volcanic rocks and the
other is granite. The weakly alte red medium grained granite is cu t by a small quartz vein/breccia
zone that exhibits alteration stronger than the surrounding wall rocks. The alteration to sericite is
accompanied by both hematite and malachite (possibly after chalcopyrite).
In general, the three massive felsic volcanic rock s (flows?) are more intensely altered than the
younger granite. The feldspars are altered to albite. The alte ration includes weak propylitic
(sericite-chlorite-epidote) alteration and weak to intense silicification.
The tuffaceous felsic volcanic rocks are more intensely altered than the massive rocks with
plagioclase altered to albite and intense silicification with the addition of quartz.
The alteration ranges from weak propylitic (ser icite-chlorite-epidote) to moderate propylitic
(albite-sericite-chlorite-epidote-calcite) to phyl lic/silicic and grading to argillic (clay-quartz-
jarosite-alunite). The intense silicic alteration is manifest by the addition of quartz as a pervasive
replacement, veinlets, stock works or breccia. Th e late silicification is associated with cubic
casts, limonite, goethite and malachite, which are pr obably remnants of weat hered pyrite and/or
chalcopyrite. Electrum (a gold-silv er alloy) was tentatively identi fied in one of the quartz-rich
areas.
The variation in alteration from less in the more massive rock to most intense in the more porous
tuffaceous rocks is consistent with alteration ca used by circulating hydrot hermal fluids rather
than in-situ alteration during cooling. Alteration that ranges from weakly propylitic to phyllic
and argillic are typically found in shells su rrounding porphyry style copper and copper-gold
deposits. In addition, intense silic ification with sulphide minera ls and/or gold-silver commonly
overprints the earlier alterations in mineralized systems.
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The thin sections were prepar ed by Vancouver Petrographic Ltd. an d are described in detailed
report delivered to the Company in January 2018.
A “thin section” is a piece of rock or a mineral species sp ecifically prepared to study its optical
properties. Each sample is ground to a 0.03 millimetre thickness then polished and placed
between two microscopic slides. The samples are then studied to identify resident minerals,
determine their volumetric percentages and desc ribe their textures. Pe trographic studies are
critical to understanding the origin of the rock in order to provide a geological understanding of
the property.
George H. Gale, PhD. P.Eng, CPG., the Qualif ied person for the Company. Dr. Gale prepared
and approved the contents of this news release. George Gale is also a Cascadero Senior geologist
and a member of the Company’s advisory board.
Bill McWilliam
Chief Executive Officer
Chairman
O = 604.924.5504
C = 604.999.0391
E = bill@ Cascadero.com