SECURITIES AND EXCHANGE COMMISSION
                                 Washington, DC



                                    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): December 1, 1997.


                            MILLENNIUM CHEMICALS INC.
             (Exact name of registrant as specified in its charter)


                                    Delaware
                 (State or Other Jurisdiction of Incorporation)



     1-12091                                                      22-3436215
(Commission File                                                (IRS Employer
     Number)                                                 Identification No.)

                              99 Wood Avenue South
                            Iselin, New Jersey 08830
                    (Address of principal executive offices)

                                  732-603-6600
              (Registrant's Telephone Number, Including Area Code)

                                 Not Applicable
          (Former Name or Former Address, if Changed Since Last Report)





Item 2.  Acquisition or Disposition of Assets.

     (a)  On December 1, 1997,  Millennium Chemicals Inc. (the "Registrant") and
          Lyondell  Petrochemical Company ("Lyondell") completed a joint venture
          transaction  to  form  Equistar  Chemicals,  LP  (the  "Partnership"),
          combining  both  companies'  olefins  and  polymers   businesses.   In
          connection  with  the  joint  venture   transaction,   the  Registrant
          contributed   substantially   all  of  the   assets   comprising   its
          polyethylene  and related  products,  performance  polymers  and ethyl
          alcohol   businesses  other  than  the  related  accounts   receivable
          (collectively,  the "Millennium  Contributed  Business") to Millennium
          Petrochemicals LP LLC ("Millennium LP"), a wholly-owned  subsidiary of
          the Registrant,  which in turn contributed the Millennium  Contributed
          Business to the  Partnership.  In  exchange  for the  contribution  of
          assets  to  the   Partnership,   (i)   Millennium  LP  and  Millennium
          Petrochemicals  GP LLC, a wholly-owned  subsidiary of the  Registrant,
          received  an  aggregate  43%  interest  in the  Partnership,  (ii) the
          Registrant  received  $750  million  in cash from the  Partnership  in
          repayment of certain  indebtedness,  and (iii) the Partnership assumed
          certain  other  liabilities  related  to  the  Millennium  Contributed
          Business. In addition, the Registrant expects to realize approximately
          $250 million over the next several  months from the  collection of its
          retained accounts receivable.  Millennium America Inc., a wholly-owned
          subsidiary  of  the   Registrant,   has  guaranteed  $750  million  of
          indebtedness  of  the  Partnership.   The  consideration  received  in
          exchange for the Millennium  Contributed Business was determined based
          upon  arms-length  negotiations  between the  Registrant and Lyondell,
          which simultaneously  contributed certain assets to the Partnership in
          exchange for an aggregate 57% interest in the  Partnership.  The joint
          venture  transaction  is  described  in  detail  in  the  Joint  Proxy
          Statement  (the "Joint Proxy  Statement")  filed by the Registrant and
          Lyondell with the  Securities  and Exchange  Commission on October 17,
          1997; the Joint Proxy Statement is  incorporated  herein by reference.
          The Registrant's  stockholders  approved such transaction at a special
          meeting held on November 20, 1997.

     (b)  N/A

Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

     (a)  Financial Statements of Businesses Acquired.

     The Registrant hereby incorporates by reference the financial statements of
     the petrochemicals and polymers  businesses of Lyondell  contributed to the
     Partnership  from pages F-2 through F-13 of the Joint Proxy  Statement  and
     the financial statements of the Millennium Contributed Business contributed
     to the  Partnership  from  pages  F-14  through  F-24  of the  Joint  Proxy
     Statement.

     (b)  Pro Forma Financial Information.

     The  Registrant  hereby  incorporates  by reference the Unaudited Pro Forma
     Consolidated  Data regarding the Registrant and the Partnership  from pages
     33 through 37 of the Joint Proxy Statement.

(c)  Exhibits.

     10.26   Asset Contribution Agreement among Millennium Petrochemicals Inc.,
             Millennium LP and the Partnership

     10.27   Asset Contribution Agreement among Lyondell, Lyondell 
             Petrochemicals  L.P. Inc. and the Partnership

     10.28   Parent Agreement among Lyondell, the Registrant and the Partnership

     20      Joint Proxy Statement.  The Joint Proxy Statement was filed by the
             Registrant and Lyondell with the Securities and Exchange Commission
             on October 17, 1997.

     99      Joint Press Release dated December 1, 1997 of the Registrant  and
             Lyondell





                                   SIGNATURES


         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 hereunto duly authorized.


                            MILLENNIUM CHEMICALS INC.
                                  (Registrant)



Date:  December 11, 1997                     By: /s/ George H. Hempstead, III
                                                 ----------------------------
                                                 George H. Hempstead, III
                                                 Senior Vice President - Law and
                                                 Administration and Secretary







EXHIBIT INDEX

                                                                  Sequentially
Exhibit                                                           Numbered Page
No.        Exhibits                                               Where Located
10.26      Asset Contribution Agreement among Millennium 
           Petrochemicals Inc., Millennium LP and the Partnership

10.27      Asset Contribution Agreement among Lyondell 
           Petrochemicals L.P. Inc. and the Partnership

10.28      Parent Agreement among Lyondell, the Registrant and 
           the Partnership

20         Joint Proxy Statement.  The Joint Proxy Statement was
           filed by the Registrant and Lyondell with the Securities
           and Exchange Commission on October 17, 1997.
            
99         Joint Press Release dated December 1, 1997 of the Registrant and 
           Lyondell