Cypress Development samples up to 3,830 ppm Li at Dean

Cypress Development Corp (2) (C:CYP) 
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Thursday December 1 2016 - News Release

Mr. Don Huston reports

CYPRESS SAMPLES UP TO 3730 PPM LI AT DEAN LITHIUM PROJECT IN CLAYTON VALLEY, NEVADA

Cypress Development Corp. has received additional results from a phase 2 sampling program at Cypress's 2,700-acre Dean lithium brine/claystone project located in Clayton Valley, Esmeralda county, Nevada.

The company's 2,700-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's 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-per-cent-owned Dean project. Another 72 samples were collected and submitted for analysis for lithium content.

Highlights:

• Maximum lithium value in claystone/mudstone was 3730 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.
• The new zone has been named the Frontera Verde Zone and this zone 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  channel1790   CV00829 3.25 meter  chip  channel1390   


 *Note ppm = parts per million, Li = lithium metal
 Dean sample locations and assay values map:

http://www.cypressdevelopmentcorp.com/i/maps/Dean-Sample-Map-Nov16.jpg

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.

Outcropping lithium-rich mudstones at Dean Project:

http://www.cypressdevelopmentcorp.com/i/maps/Dean-Chip-Channel-Samples-Far-South.jpg

Donald Huston, President Cypress Development, stated "The recent assay result 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 (see their news release Nov. 28). The geology consists predominantly of uplifted claystone and mudstone sequences and ash tuffs, covered by a 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 is 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".