exhibit10_15.htm


    


    Exhibit
10.15

    


    


    


    
      
         

      

      
        Exhibit
10.15 - 1

        
          

        

      

      
         

      

    


    


      STOCK
ACQUISITION AGREEMENT

      


      THIS STOCK ACQUISITION
AGREEMENT dated as of the 29th day of February,
2008,

      


      BETWEEN:

      


      
        	
                 
      

              	
                SOLTERA MINING CORP., a
      company incorporated under the laws of the State of Nevada and having an
      office located at 1005 – 289 Drake Street, Vancouver, British Columbia,
      V6B 5Z5

              


      

      


      (the
“Purchaser”)

      


      AND:

      
        	
                 
      

              	
                FABIO MONTANARI, a
      businessman with Italian Passport No. E571059 with current domicile at Via
      il Perugino 8, No. 09121 Cagliari,
Italy

              


      

      


      (the “Shareholder”)

      


      WHEREAS:

      


      A.           The
Shareholder is the registered and beneficial owner of all of the shares in the
capital of Atzek Mineral, S.A. de C.V. (the “Shares”);

      


      B.           The
Shareholder wishes to sell, and the Purchaser wishes to purchase, the Shares
pursuant to the terms and conditions of this agreement;

      


      C.           Atzek
Mineral, S.A. de C.V. is party to one exploration agreement with an option to
purchase dated September 25, 2007 among Dagoberto Gomez Y Hoyuela, Luigi
Meglioli, Rossina Hernandez Baldenebro, and Luis Enrique Fierro Hernandez, and
Atzek Mineral, S.A. de C.V. (the “Real de Cananea Option Agreement”) and a
second exploration agreement with an option to purchase dated September 26, 2007
between the Rafael Vila Melendez  and Atzek Mineral, S.A. de C.V. (the
“Casita Colorada Option
Agreement”);

      


      NOW THEREFORE THIS AGREEMENT
WITNESSES that for and in consideration of $1.00 and other good and
valuable consideration paid by each party to the other, the receipt and
sufficiency of which are acknowledged, the parties covenant and agree as
follows:

      


      
        	
                1.  

              	
                The
      Shareholder agrees to sell and the Purchaser agrees to purchase the Shares
      for and at a price of US$50,000, which represents all of the Shareholder’s
      costs for incorporating and organizing Atzek Mineral, S.A. de
      C.V.

              


      

      


      
        	
                2.  

              	
                As
      further consideration for the acquisition of the Shares, the Purchaser
      will issue 16,000,000 restricted shares of common stock in the capital of
      the Purchaser to the Shareholder at a deemed price of $0.001 per
      share.

              


      

       

      
 

      
        
           

        

        
          Exhibit
10.15 - 2

          
            

          

        

        
           

        

      

      
        	
              	
                3.  
      

              	
                The
      Shareholder represents and warrants to the Purchaser
  that:

              


      

      


      
        	
                 
      

              	
                a.

              	
                The
      Shareholder owns the Shares as the legal and beneficial owner thereof,
      free of all liens, claims, charges and encumbrances of every nature and
      kind whatsoever.  The Shares are fully paid and non-assessable
      and the Shareholder has due and sufficient right and authority to enter
      into this agreement and to transfer the legal and beneficial title and
      ownership of the Shares to the
Purchaser.

              


      

      


      
        	
                 
      

              	
                b.

              	
                No
      person, firm or corporation has any agreement or option or a right capable
      of becoming an agreement for the purchase of the Shares, with the
      exception of this agreement.

              


      

      


      
        	
                4. 
      

              	
                The
      effective date of sale and purchase of the Shares will be February 29,
      2008 (the “Closing”).

              


      

      


      
        	
                5. 
      

              	
                At
      the Closing,

              


      

      


      
        	
                a.  

              	
                the
      Shareholder will deliver to the Purchaser the share certificates, duly
      endorsed for transfer, representing the
Shares;

              


      

      


      
        	
                b.  

              	
                the
      Purchaser will deliver to the Shareholder a cheque in the amount of
      US$50,000 to the Shareholder representing all of the Shareholder’s costs
      for incorporating and organizing Atzek Mineral, S.A. de C.V.;
      and

              


      

      


      
        	
                c.  

              	
                the
      Purchaser will deliver to the Shareholder a share certificate representing
      16,000,000 restricted shares of common stock in the capital of the
      Purchaser registered in the name of the
  Shareholder.

              


      

      


      
        	
                6. 
      

              	
                This
      agreement will enure to the benefit of and will be binding upon the
      parties and their respective successors and
  assigns.

              


      

      


      
        	
                7. 
      

              	
                Time
      will be of the essence of this
agreement.

              


      

      


      
        	
                8. 
      

              	
                The
      parties will sign such further assurances and other documents and
      instruments and do such further and other things as may be necessary to
      implement and carry out the intent of the
  agreement.

              


      

      


      


      IN WITNESS WHEREOF the parties
have signed this Stock Acquisition Agreement as of the day and year first above
written.

      


      


      Soltera
Mining Corp.

      


      Per:                      /s/
Nadwynn Sing

      
 

      Authorized
Signatory

       

       

      /s/ Fabio Montanari

      
 

        Fabio
Montanari

      




      
        
           


        

        
          Exhibit
10.15 - 3