Exhibit 10.17
 
BRAZIL MINERALS, INC.
155 North Lake Avenue, Suite 800
Pasadena, California 91101

August 11, 2015

The 2004 Helvin Family Trust
c/o John Helvin
[address]

Dear John:

Reference is made to the Convertible Promissory Note from Brazil Minerals, Inc.
(“BMIX”) to The 2004 Helvin Family Trust (“Helvin Trust”) in the principal
amount of $50,000, a copy of which is attached hereto as Exhibit A (the “Note”).
This will confirm our agreement that effective immediately upon the filing with
the Nevada Secretary of State of the Certificate of Designations, Preferences
and Rights of the Series B Convertible Preferred Stock of BMIX, a copy of which
is attached hereto as Exhibit B, BMIX shall issue to the Helvin Trust a
certificate for 50 (fifty) shares of its Series B Preferred Stock, in exchange
for, and in full satisfaction of, the Note.

Please acknowledge your agreement with the foregoing by signing a copy of this
letter in the space indicated below and returning the signed copy to BMIX.

Very truly yours,
BRAZIL MINERALS, INC.

By: /s/Marc Fogassa
       Marc Fogassa, Chief Executive Officer

AGREED TO:

/s/  Carl Suter           
  Carl Suter

 
Exhibit 10.17 -- Page 1

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