Cesium Recovery from the Taron Deposit Demonstrated
CASCADERO COPPER
(TSXV: CCD)
November 7th, 2017
CESIUM RECOVERY FROM THE TARON DEPOSIT DEMONSTRATED
The recovery of Cesium from a mineral sa mple from the Taron target deposit has been
demonstrated. The mineral sample was obtained from the 2009 drill program (drill hole number
TAR-09-5). A sub-sample was crushed and ground to a particle size of 100 microns (P80). The
Cesium content of the sample was analyzed at 4761 ppm or 0.476%. A full analysis is shown in
Table 1 below.
The metallurgical treatment of this sample was demonstrated at the University of British
Columbia (UBC), Department of Materials Engineering, Vancouver, Canada.
Highlights included:
94.7 % extraction of Cesium after 4 hours of leaching at 90 C with 250 g/L H 2SO4 and 20
% Solids
Recovery of 97.8 to 99.4% of the Cesium as a Cesium Aluminum Sulfate (Alum)
precipitate after addition of aluminum sulfate and cooling to 4 C.
Purification of the Cesium-containing alum using (1) re-dissolution and re-precipitation of
alum by hot water leaching, cooling and filtration, (2) re-dissolution of purified alum by
hot water leaching followed by removal of aluminum and sulfate by stepwise
precipitation by addition of barium hydroxide. T he result of this treatment was a high -
purity Cesium hydroxide solution.
Conversion of the Cesium hydroxide solut ion to Cesium formate solution by simple
addition of formic acid.
The co-precipitation of iron, arsenic and other species from the leachate using
neutralization with limestone was demonstrated.
The overall procedure had three stages: leaching, crystal formation, crystal purification, and
Cesium sulfate purification, and the corresponding recoveries of Cesium were 94.7%, 99.9%,
and 96.1%, respectively. This gives a total of 90.9% Cesium recovery over the entire process
assuming all wash solutions would be recycled with negligible Cesium losses.
The Company is funding ongoing study of Cesium recovery including (1) upgrading of the Taron
mineral sample by mild scrubbing and screening, (2) acid leaching with reduced acid
concentration, (3) alternative leaching process opt ions. Following these studies, it is expected
that the Company will commence a metallurgical pilot plant study to provide final engineering
parameters for a feasibility study for Cesium recovery from the Taron target deposit
Table 1 – Typical Taron target deposit Sample Analysis (2009 Drill Program, Hole TAR-09-5)
ELEMENTS. All values are ppm(wt).
Ag Al As Ba Be Bi Ca Cd Ce Co Cr Cs
1 33500 40495 2506 5 <0.5 28600 7 34 111 177 4761
Cu Dy Er Eu Fe Ga Gd Hf Ho K La Li
1483 3 2 1 67300 13 2 1 1 17800 17 52
Lu Mg Mn Mo Na Nb Nd Ni P Pb Pr Rb
<0.1 4100 >10000 11 14300 8 15 126 3400 22 4 407
S Sb Sc Se Sm Sn Sr Ta Tb Te Th Ti
<500 4 3 3 2 2 542 1 <0.1 2 5 2060
Tl Tm U V W Y Yb Zn Zr F
2533 0 11 82 1 16 1 2173 32 635
OXIDES and Loss on Ignition. All values are wt%.
SiO2 Al2O3 Fe2O3 CaO MgO Na2O K2O MnO TiO2 P2O5 Cr2O3 Ba LOI
48.86 8.7 9.7 4.07 0.86 1.74 2.14 8.13 0.42 0.82 0.03 0.24 5.76
Mr. Bill McWilliam, Chairman, Cascadero Copper commented “This initial metallurgical program
has conclusively demonstrated that high - qualit y Cesium formate Cesium Hydroxide solutions
may be recovered from the Taron target deposit mineralization”. “Cesium formate is in high -
demand in the oil and gas drilling sector as Cesium formate solution has a very - high density
(2.30 g/cm 3). Cesium formate also has several other important properties for drilling and
completion of down hole operations. It is considered the premier product of alkaline brines and
all other drilling fluids.”
“It is expected that the ongoing UBC metallurgical program will increase the efficiency of the
process and decrease costs. In addition, these metallurgical results may be an historic moment
in geological deposit understanding, mineralogy, due to impressive persistence and excellence
of the UBC metallurgical team. I understand that the recovery of Cesium from an epithermal
sediment hosted polymetallic mineral source other than Pollucite, is a first.”
“I congratulate Cascadero’s staff, consultants, advisers and investors for their support and
patience to the finish line.”
Qualified Person:
Dr. David Dreisinger, Ph.D, P.Eng., is the Qualified Person for the purposes of NI 43-101. Dr.
Dreisinger has reviewed and approved the technical disclosure contained in this news release
as applicable. The Company will endeavor to meet high-standards of integrity, transparency,
and consistency in reporting technical content, including geological and assay data.
About the Company:
Cascadero Copper is an integrated mineral exploration and development business, which
through its 70% owned subsidiary, Cascadero Minerals Corp Canada (CMC) and its partner
Regberg Ltd. (Singapore) manage and finance CMC as a 70/30 Joint Venture. The Company
holds exploration rights to 27 tenements in north western Argentina. Twenty-two of the
tenements are organized into four core areas: Taron; Taca Taca; Santa Rosa; El Oculto and
five of the tenements are stand-alone-exploration opportunities.
The Company’s commodity focus includes: Cesium, Rubidium, Thallium, Gold, Silver, Lead,
Copper, Zinc, Tellurium and Tin. There are several deposit types and most contain precious
metals, such as gold and silver. The tenem ents are mostly 100% owned by CMC and were
generated from grass roots prospecting 2004 to 2014. In 2005, the Company had seventy-five
tenements covering 203,000 hectares. The current portfolio is a rendering of those tenements.
There are no underlying agreements on any of the tenements but some, including Taron, are
subject to a 1% NSR and none is subject to Joint Venture or Buy - Sell agreements.
The Company has offices in North Vancouver, BC and Salta City in the province of Salta,
Republic of Argentina.
Bill McWilliam
Chairman
Office = 604.924.5504
Cell = 604-999-0391
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defined in the policies of the TSX Venture Exchange) accepts responsibility for the
adequacy or accuracy of this release.”