UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 2)*

TRONOX LIMITED

(Name of Issuer)

Class A Ordinary Shares

(Title of Class of Securities)

Q9235V101

(CUSIP Number)

Carina Wessels

Exxaro Resources Limited

Roger Dyason Road

Pretoria West 0183

Pretoria, South Africa

+27 12 307 5000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

October 18, 2012

(Date of Event which Requires Filing of this Statement)

Copy to:

N. Nell Scott

Orrick, Herrington & Sutcliffe (Europe) LLP

107 Cheapside

London EC2V 6DN

England

+44 20 7862 4600

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e) or 240.13d-1(f) or 240.13d-1(g), check the following box.  ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this “cover page” shall not be deemed “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Item 1. Security and Issuer

This Amendment No. 2 to Schedule 13D (this “Amendment”) amends and supplements Exxaro’s statement on Schedule 13D (as amended from time to time, this “Schedule 13D”) filed in relation to the Class A Shares of Tronox.

Exxaro owns 50,539,672 Class B Shares, which represents 100% of the outstanding Class B Shares and approximately 44.4% of Tronox Limited’s outstanding voting securities, based on share information released by Tronox on September 27, 2012.

Except as specifically provided herein, this Amendment does not modify any of the information previously reported on this Schedule 13D. Capitalized terms used but not otherwise defined herein have the meanings ascribed to them in this Schedule 13D.

Item 2.

EXECUTIVE OFFICERS AND DIRECTORS OF EXXARO RESOURCES LIMITED

(a), (c) and (f) The following information sets forth the name, citizenship and present principal occupation of each Exxaro executive officer and director.

EXXARO EXECUTIVE OFFICERS

EXXARO DIRECTORS

(b) The business address of each Exxaro executive officer and director is Roger Dyason Road, Pretoria West 0183, South Africa.

(d) During the last five years, none of the Exxaro executive officers or directors has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) During the last five years, none of the Exxaro executive officers or directors has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration

As previously disclosed in this Schedule 13D, on October 4, 2012, Exxaro entered into the JPMS Tronox Class A Trading Plan to purchase up to 1,400,000 Class A Shares. From October 5, 2012 through October 18, 2012, Exxaro purchased 785,392 Class A Shares on the open market pursuant to the JPMS Tronox Class A Trading Plan. The source of funds for such purchases was Exxaro’s working capital and cash on hand.

Item 4. Purpose of the Transaction

From October 5, 2012 through October 18, 2012, Exxaro purchased 785,392 Class A Shares in market purchases pursuant to the JPMS Tronox Class A Trading Plan, which represents approximately 1% of all outstanding Class A Shares as of September 27, 2012 (the last date on which Tronox announced the number of its outstanding Class A Shares) and approximately 0.7% of Tronox’s outstanding voting securities. The details of such purchases are set forth on Exhibit A hereto, which is incorporated herein by reference.

Tronox’s Constitution provides that, subject to certain exceptions, when Exxaro acquires a Class A Share, including the Class A Share acquisitions described in this Amendment, it automatically converts to a Class B Share, which means Exxaro generally will not hold Class A Shares.

As previously disclosed in this Schedule 13D and in addition to the JPMS Tronox Class A Trading Plan, Exxaro may, from time to time, purchase Class A Shares, or interests in Class A Shares, through open market purchases, privately negotiated transactions, block trades, derivative securities or otherwise, subject to compliance with applicable United States and Australian laws and regulations and the contractual restrictions agreed to by Exxaro.

Except as described above, Exxaro does not have any current plans or proposals that relate to or would result in any of the events set forth in paragraphs (a) through (j) of Item 4. Exxaro may, at any time and from time to time, review or reconsider its position and/or change its purpose and/or formulate plans or proposals with respect thereto.

Item 5. Interest in Securities of the Issuer

(a)-(b)

As of the date of this Amendment, Exxaro does not beneficially own any Class A Shares. Exxaro directly owns 50,539,672 Class B Shares, representing 100% of the outstanding Class B Shares and approximately 44.4% of Tronox’s voting securities. Except as set forth in Item 2 of this Statement, to the best of Exxaro’s knowledge, none of the persons identified in Item 2 of this Statement is, or may be deemed to be, the beneficial owner of any Tronox securities.

Neither the filing of this Schedule 13D nor any of its contents will be deemed to constitute an admission that Exxaro is the beneficial owner of any Tronox securities (other than as described in this Item 5) for the purposes of Section 13(d) of the Act, or for any other purposes, and any such beneficial ownership is expressly disclaimed.

(c) From October 5, 2012 through October 18, 2012, Exxaro purchased Class A Shares on the open market pursuant to the JPMS Tronox Class A Trading Plan. The details of such purchases are set forth on Exhibit A hereto, which is incorporated herein by reference. Except for such purchases (and those identified in Item 2), Exxaro or, to the best of its knowledge, none of the persons identified in Item 2 of this Schedule 13D, has engaged in any transactions in Tronox securities during the past 60 days.

(d) To the best of its knowledge, no person other than Exxaro has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Class B Shares owned by Exxaro.

(e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer

Except for the JPMS Tronox Class A Trading Plan, Exxaro and, to the best of its knowledge, the persons identified in Item 2 of this Schedule 13D, have not entered into any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any Tronox securities, including, but not limited to, transfer or voting of any securities, finder’s fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies.

Item 7. Material to be Filed as Exhibits

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this Amendment to the Statement on Schedule 13D is true, complete and correct and that such Statement, as amended hereby, is true, complete and correct.

Dated: October 19, 2012

Exhibit A

Transactions in Class A Shares Effected During the Past Sixty Days