This work investigates how the surface textures and morphology of pyroxene grains evolve during their source-to-sink history. Our study applies to detrital clinopyroxenes concentrated in coastal dune sands of the Gulf of Mexico which were sourced in the Trans Mexican volcanic beltand were transported and deposited in environments subject to limited chemical weathering. The composition and morphology of the pyroxenes was characterized using single-grain geochemical analysis and surface texture imagery with a novel approach to assess the roundness of minerals. This reveals heterogenous diopside-augite populations, displaying mineral morphologies dominantly controlled by the impact breakage along cleavages, little physical abrasion along their edges with limited evidence for chemical weathering. Mechanical surface textures dominate over mechanical/chemical and chemical surface textures preserved primarily as flat cleavage surfaces and rounded edges inherited from fluvial-intertidal and eolian transport, respectively. Mechanically/chemically-induced surface textures are preserved as elongated depressions. Chemical surface textures are sparse and mostly represented by mamillated textures that suggest local dissolution under subaqueous conditions. Little preservation of chemical surface textures is attributed to frequent fragmentation of the clinopyroxenes along cleavages and limited chemical weathering during the transport of the observed populations. Clinopyroxene grains in the coastal dune sands primarily retain surface characteristics from fluvial transport. Although the breakage of minerals along cleavages can obscure their original morphology under a weathering-limited erosion regime, this study shows how surface textures and morphology of pyroxene grains is used to determine episodes of transport and deposition close to volcanic environments.