Methodology for Microbial Carbon Mineralization (MCM)

The proposed methodology involves the application of naturally occurring microbial inoculants that accelerate silicate breakdown on agricultural fields. As in enhanced weathering activities, silicate breakdown results in carbonate precipitation. The released carbonate ions are ultimately transported via groundwater/rivers to the ocean, causing enhanced alkalinity, and reprecipitation of carbonate minerals. Silicate weathering also releases cations with potential co-benefits to soil fertility and crop yields in addition to CO2 removals. The proposed methodology is globally applicable.

The concept note was submitted by Andes Ag, Inc. (external). On December 19, 2024, the development of this methodology was put on hold. Verra will consider resuming the development once the following criteria are met:

• Science related to the proposed concepts advances
• Resources are available to support the methodology development process
• The development process can be prioritized over other VCS methodology development work according to the VCS Methodology Development and Review Process.

Stakeholders interested in collaborating during methodology development or developing projects that this methodology might enable are encouraged to contact methodologies@verra.org. Please include the Methodology Development ID# M0265 in the subject line.