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Robert T. Turnbull, J.D.

Mineral Manager

J.D., St. Mary’s University School of Law
B.A. (Government), University of Texas

Robert is primarily responsible for lease negotiations, lease monitoring and ensuring proper and timely revenue payments for mineral owners throughout Texas, focusing on the Austin, San Antonio, Houston and Corpus Christi areas.

Robert joined Argent from Frost Bank in San Antonio, where he has served as vice president of mineral asset management since 2011. Before that, he was a solo practitioner in San Antonio focusing on oil and gas leases for mineral owners and surface use agreements for landowners.

Robert earned his juris doctor from St. Mary’s University School of Law in 2009, and also holds a bachelor’s degree from the University of Texas from 2006. He is a member of the San Antonio Association of Professional Landmen and the Texas Bar Association.

San Antonio

755 East Mulberry Suite 400, San Antonio, TX 78212

(210) 352-2410

755 East Mulberry Suite 400, San Antonio, TX 78212

Provided Services

Oil & Gas Management

Oil & Gas Management

Few mineral management companies can match Argent Mineral Management’s expertise in contract negotiation, oil & gas accounting, asset evaluation, and ongoing management.

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The Morning View: August 18, 2026

The Morning View: August 18, 2026

https://vimeo.com/1219237732 Announced this morning, Housing Starts were 1,239,000 in July, less than expected and a -12.4% decrease from the previous month’s revised figure.  This follows a 19.7% increase in the previous month.  In addition, Building Permits were...

The Morning View: August 12, 2026

The Morning View: August 12, 2026

https://vimeo.com/1217666745 In this morning’s data, the Consumer Price Index (CPI) increased 0.1% in July, as expected, and was a rebound from the previous month’s decrease. On an annual basis, it grew 3.4%.  The core rate, which excludes prices for food and energy,...

The Morning View: August 7, 2026

The Morning View: August 7, 2026

https://vimeo.com/1216432070 In this morning’s data, the economy lost -23,000 jobs in July, less than the increase that was expected.  Reviewing the individual categories, the Health Care and Social Assistance industry was relatively strong, while the Leisure and...

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