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STATES</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 12pt; FONT-WEIGHT: bold">SECURITIES
AND EXCHANGE COMMISSION</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Washington,
D.C.&#160;&#160;20549</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">______________________________</font></div>
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8-K</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">_________________________</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">CURRENT
REPORT</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Pursuant
to Section 13 or 15(d) of the Securities Exchange Act of 1934</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Date of
Report (Date of earliest event reported): <font style="DISPLAY: inline; FONT-WEIGHT: bold">January 26</font><font style="DISPLAY: inline; FONT-WEIGHT: bold">, 2010</font></font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;</font><br><br>&#160;</div>
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L.P.</font></font></div>
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name of Registrant as specified in its charter)</font></div>
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          </tr><tr>
            <td valign="top" width="29%">
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      or other jurisdiction of incorporation or organization)</font></div>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Commission
      File Number</font></div>
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      Employer Identification No.)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">1415
Louisiana Street, Suite 2700</font></div>
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Texas&#160;&#160;77060</font></font></div>
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of principal executive offices, including zip code)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">(281)
408-1200</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">(Registrant&#8217;s
telephone number, including area code)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Check the
appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions:</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;&#160;&#160;Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;&#160;&#160;Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;&#160;&#160;Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))</font></div>
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communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold"><font style="DISPLAY: inline">Item 8.01 Other Information.</font></font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>
    <div style="TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline">On December 21, 2009, Eagle Rock Energy Partners, L.P.
(the &#8220;Partnership&#8221;) entered into a Purchase and Sale Agreement by and among the
Partnership&#8217;s wholly-owned subsidiaries Eagle Rock Pipeline GP, LLC and EROC
Production LLC and BSAP II GP L.L.C. (&#8220;Black Stone Minerals&#8221;), a subsidiary of
Black Stone Minerals Company, L.P., pursuant to which the Partnership will sell
all of its fee mineral and royalty interests business, as well as its equity
investment in Ivory Working Interests, L.P. (the &#8220;Minerals Business&#8221;) to Black
Stone Minerals for $174.5 million in cash, subject to customary purchase price
adjustments (the &#8220;Minerals Business sale&#8221;).&#160;&#160;Unaudited pro forma
condensed consolidated financial information giving effect to the
pending&#160;&#160;Minerals Business sale is attached hereto as Exhibit 99.1 and
is incorporated herein by reference.</font></font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold"><font style="DISPLAY: inline; FONT-SIZE: 10pt">Item 9.01 Financial Statements and
Exhibits.</font></font></div>
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Pro Forma Financial Information</font></div>
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pro forma condensed consolidated financial information, including a unaudited
pro forma condensed consolidated balance sheet as of September 30, 2009 and the
unaudited pro forma condensed consolidated statements of operations for the nine
months ended September 30, 2009 and 2008 and the years ended December 31, 2008
and&#160; 2007, are attached hereto as Exhibit 99.1 and are incorporated herein
by reference.</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">(d)&#160; Exhibits</div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">
    </div>
    <div>&#160;</div>
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            <td width="50%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; TEXT-DECORATION: underline"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Exhibit No.</font></font></td>
            <td width="50%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;<font style="FONT-WEIGHT: bold; TEXT-DECORATION: underline">Description</font></font></td>
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            <td width="50%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
            <td width="50%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
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            <td width="50%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;99.1<font id="TAB2" style="LETTER-SPACING: 9pt">&#160;&#160;&#160;</font></font></td>
            <td width="50%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;Unaudited pro
      forma condensed consolidated financial
information</font></td>
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    <div>&#160;</div><br>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">SIGNATURE</font></div>
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    <div style="TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Pursuant
to the requirements of the Securities Exchange Act of 1934, the registrant has
duly caused this report to be signed on its behalf by the undersigned thereunto
duly authorized.</font></div>
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      ROCK ENERGY PARTNERS, L.P.</font></div>
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      Rock Energy GP, L.P.,</font></div>
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      general partner</font></div>
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      Rock Energy G&amp;P, LLC,</font></div>
            </td>
          </tr><tr>
            <td align="left" valign="top" width="39%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 9pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">its
      general partner</font></div>
            </td>
          </tr><tr>
            <td align="left" valign="top" width="39%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
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            <td align="left" valign="top" width="1%">
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 9pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
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            <td align="left" valign="top" width="39%" style="PADDING-BOTTOM: 2px">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Date:
      January 26, 2010</font></div>
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            <td align="left" valign="top" width="3%" style="PADDING-BOTTOM: 2px">
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            <td align="left" valign="top" width="1%" style="PADDING-BOTTOM: 2px">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
            </td>
            <td align="left" valign="top" width="36%" style="BORDER-BOTTOM: black 2px solid">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 9pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">/s/
      Jeffrey P. Wood</font></div>
            </td>
          </tr><tr>
            <td align="left" valign="top" width="39%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
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            <td align="left" valign="top" width="3%">
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            </td>
            <td align="left" valign="top" width="1%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
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            <td align="left" valign="top" width="36%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 9pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Jeffrey
      P. Wood</font></div>
            </td>
          </tr><tr>
            <td align="left" valign="top" width="39%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
            </td>
            <td align="left" valign="top" width="3%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
            </td>
            <td align="left" valign="top" width="1%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
            </td>
            <td align="left" valign="top" width="36%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 9pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Chief
      Financial Officer</font></div>
            </td>
          </tr></table>
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        <div id="GLFTR" style="WIDTH: 100%" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
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        <div style="TEXT-ALIGN: center; WIDTH: 100%"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
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        <div id="GLHDR" style="WIDTH: 100%" align="right"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
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    <div>
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            </td>
            <td valign="top" width="57%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline">Unaudited pro forma condensed consolidated
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form8-k.htm
UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
Washington,
D.C.  20549
______________________________
FORM
8-K
_________________________
CURRENT
REPORT
Pursuant
to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of
Report (Date of earliest event reported):
January 26
, 2010
EAGLE ROCK ENERGY PARTNERS,
L.P.
(Exact
name of Registrant as specified in its charter)
Delaware
001-33016
68-0629883
(State
      or other jurisdiction of incorporation or organization)
Commission
      File Number
(I.R.S.
      Employer Identification No.)
1415
Louisiana Street, Suite 2700
Houston,
Texas  77060
(Address
of principal executive offices, including zip code)
(281)
408-1200
(Registrant's
telephone number, including area code)
Check the
appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions:
o
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
o
Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)
o
Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))
o
Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))
Item 8.01 Other Information.
On December 21, 2009, Eagle Rock Energy Partners, L.P.
(the "Partnership") entered into a Purchase and Sale Agreement by and among the
Partnership's wholly-owned subsidiaries Eagle Rock Pipeline GP, LLC and EROC
Production LLC and BSAP II GP L.L.C. ("Black Stone Minerals"), a subsidiary of
Black Stone Minerals Company, L.P., pursuant to which the Partnership will sell
all of its fee mineral and royalty interests business, as well as its equity
investment in Ivory Working Interests, L.P. (the "Minerals Business") to Black
Stone Minerals for $174.5 million in cash, subject to customary purchase price
adjustments (the "Minerals Business sale").  Unaudited pro forma
condensed consolidated financial information giving effect to the
pending  Minerals Business sale is attached hereto as Exhibit 99.1 and
is incorporated herein by reference.
Item 9.01 Financial Statements and
Exhibits.
(b)(1)
Pro Forma Financial Information
Unaudited
pro forma condensed consolidated financial information, including a unaudited
pro forma condensed consolidated balance sheet as of September 30, 2009 and the
unaudited pro forma condensed consolidated statements of operations for the nine
months ended September 30, 2009 and 2008 and the years ended December 31, 2008
and  2007, are attached hereto as Exhibit 99.1 and are incorporated herein
by reference.
(d)  Exhibits
Exhibit No.
Description
99.1
Unaudited pro
      forma condensed consolidated financial
information
SIGNATURE
Pursuant
to the requirements of the Securities Exchange Act of 1934, the registrant has
duly caused this report to be signed on its behalf by the undersigned thereunto
duly authorized.
EAGLE
      ROCK ENERGY PARTNERS, L.P.
By:
Eagle
      Rock Energy GP, L.P.,
its
      general partner
By:
Eagle
      Rock Energy G&P, LLC,
its
      general partner
Date:
      January 26, 2010
By:
/s/
      Jeffrey P. Wood
Jeffrey
      P. Wood
Chief
      Financial Officer
Exhibit Index
Exhibit No.
Description
99.1
Unaudited pro forma condensed consolidated
      financial information