Cypress Samples Up to 3,730 ppm Li at Dean Lithium Project in Clayton Valley, Nevada

December 1, 2016

Vancouver, BC - Cypress Development Corp. (TSX-V: CYP) (OTCBB: CYDVF) (Frankfurt: C1Z1) ("Cypress" or the "Company") is pleased to announce that the Company has received additional results from a Phase 2 sampling program at Cypress' 2,700 acre Dean Lithium Brine/Claystone Project located in Clayton Valley, Esmeralda County, Nevada.

The Company's 2700 acre Dean Claim Group is located adjacent to producing lithium brine wells belonging to the Albemarle Silver Peak Mine on its west boundary, Pure Energy's resource area on its southwest boundary and Cypress' existing Glory Clayton Valley Project, optioned to Pure Energy, on its southern boundary.

In October, Cypress initiated a Phase 2 detailed surface sampling program on the Company's 100% owned Dean Project. Another 72 samples were collected and submitted for analysis for lithium content.


  • Maximum value in claystone/mudstone was 3,730 ppm lithium (0.82% Li20 equivalent);
  • 8 samples assayed greater than 2000 ppm lithium (>0.43% Li20 equivalent);
  • 29 samples assayed greater than 1000 ppm lithium (>0.22% Li20 equivalent);
  • An area of >2 square kilometers has been identified as a new high-grade zone;
  • New zone has been named the Frontera Verde Zone and is open for expansion to the north and south;
  • Initial chip channel samples demonstrate vertical continuity of mineralization to 3.25 meters (see table 1 below);
  • BLM permitting is underway in preparation for drilling of the new zone.

Table 1: Cypress Dean Outcrop Sampling Results Highlights

Sample # Rock Type Li ppm   Sample # Rock Type Li ppm
Dean-26 Mudstone 640 CV00802 Claystone 3730
Dean-27 Mudstone 900 CV00803 Mudstone 1660
Dean-28 Claystone 1350 CV00805 Mudstone 1000
Dean-41 Claystone 1100 CV00806 Claystone 1030
Dean-44 Claystone 1890 CV00810 Claystone 1480
CV00210 Claystone 2040 CV00811 Claystone 1320
CV00221 Claystone 2310 CV00812 Claystone 1750
CV00224 Claystone 3830 CV00813 Claystone 2130
CV00225 Mudstone 920 CV00814 Mudstone 1000
CV00226 Mudstone 910 CV00818 Mudstone 1640
CV00790 Mudstone 2440 CV00819 Mudstone 1450
CV00792 Mudstone 510 CV00820 Mudstone 800
CV00793 Mudstone 510 CV00821 Mudstone 1150
CV00794 Mudstone 2530 CV00822 Siltstone 810
CV00795 Claystone 1030 CV00823 Ashstone 570
CV00796 Mudstone 780 CV00824 Claystone 1090
CV00797 Mudstone 1770 CV00825 Mudstone 1110
CV00798 Mudstone 1780 CV00826 Mudstone 750
CV00799 Mudstone 1410 CV00827 Claystone 1060
CV00800 Claystone 1590 CV00801 Claystone 2220
CV00828 2.5 meter chip channel 1790 CV00829 3.25 meter chip channel 1390

*Note ppm = parts per million, Li = lithium metal

Several first order targets are now being defined on the property which include extensive outcropping of altered green evaporate-rich volcanoclastic claystone/mudstone exposure known as the Frontera Verde Zone. The Frontera Verde Zone covers an area of greater than 2 square kilometers. The average lithium grade of the Frontera Verde Zone is greater than 1500 ppm Li. The mineralization seen on the Dean Project is essentially identical to the Cypress Glory Project immediately to the south, now being jointly explored by Cypress Development and earn-in partner Pure Energy Minerals.

Donald Huston, President Cypress Development, stated "the recent assay results from the sampling program on the Dean Project has returned some of the highest grade lithium numbers in claystone that has ever been reported in Clayton Valley, Nevada. It is evident, from the surface mapping and sampling completed, that the lithium-rich claystone extends over a large area of the property known as the Frontera Verde Zone. Cypress management are very encouraged with the progress seen to date and will continue with work on potential lithium extraction methods for the claystones."

The Dean property is composed of the same claystones / mudstones as seen on the Glory property to the immediate south, and under option to Pure Energy Minerals. The geology consists predominantly of uplifted claystone and mudstone sequences and ash tuffs, covered by thin (less than 2 meters) layer of channel wash gravels.

Additional assay methods recently carried out by Cypress on the Dean Project clearly show that the lithium in the uplifted exposed lake bed sediments is easily leached by a dilute acid solution and a deionized water method.

Cypress in the process of making application to the BLM, Nevada for a Permit to allow for a series of drill holes into the new Frontera Verda Zone on the Dean Project.

Quality Control and Quality Assurance:

All samples were submitted to ALS Chemex Labs in Reno, Nevada, for analysis using an ME-ICP61, 33 element four acid digestion ICP method. Blind sample blanks were inserted into the sample sequences at a rate of approximately 1 per 20 samples.

Robert Marvin, PGeo, Exploration Manager for Cypress Development Corp., is the qualified person as defined by National Instrument 43-101 and has approved of the technical information in this release.

About Cypress Development Corp.:

Cypress Development Corp. is a publicly traded lithium and zinc exploration company that continues to acquire and develop potentially viable mineral projects in the State of Nevada, U.S.A.

Cypress is very active in Clayton Valley, Nevada with its team committed to systematically exploring its properties for both a lithium-brine resource and expanding exploration relating to the potential for lithium that exists within the recently discovered non-hectorite "claystones", that has seen recent high lithium assays recovered from these same "claystones".

Cypress Development Corp. has approx. 27.9 million shares issued and outstanding.

To find out more about Cypress Development Corp. (TSX-V: CYP), visit our website at


"Don Huston"

For further information contact myself or:
Don Myers
Cypress Development Corp.
Telephone: 604-687-3376
Toll Free: 800-567-8181
Facsimile: 604-687-3119


This release includes certain statements that may be deemed to be "forward-looking statements". All statements in this release, other than statements of historical facts, that address events or developments that management of the Company expects, are forward-looking statements. Although management believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance, and actual results or developments may differ materially from those in the forward-looking statements. The Company undertakes no obligation to update these forward-looking statements if management's beliefs, estimates or opinions, or other factors, should change. Factors that could cause actual results to differ materially from those in forward-looking statements, include market prices, exploration and development successes, continued availability of capital and financing, and general economic, market or business conditions. Please see the public filings of the Company at for further information.