TAM19B-7 is the largest (~1.7 mm) fine-grained, unmelted micrometeorite found and analyzed to date . Although no meteorite in our collection has ever been linked to dwarf planet Ceres, we hypothesize that TAM19B-7 may have originated from Ceres. This interpretation is based on TAM19B-7’s petrologic, textural, mineralogic, and isotopic data, all of which indicate severe aqueous processing compatible with the regolith chemistry of Ceres. Ceres is a volatile-rich asteroid with a partially differentiated interior, carbonate-rich crust, and evidence of advanced aqueous alteration on a global scale . Ceres’ surface mineralogy is consistent with highly aqueously altered CI or CM carbonaceous chondrites . If some micrometeorites in our collections indeed originated from Ceres-like objects, additional laboratory studies can provide ground truth data on organic preservation in icy asteroid regolith, while also providing new perspectives on prebiotic chemical pathways available in large-icy asteroids. TAM19B-7 was retrieved from sedimentary traps on the summit of Miller Butte in the Transantarctic Mountains in 2006 by the Programma Nazionale di Ricerche in Antartide expeditions. Petrographically TAM19B-7 is dominated by fine-grained matrix with no surviving unaltered anhydrous silicates. Pseudomorphic chondrules are identifiable and have small average diameters with oblate “crushed” shapes and evidence of aligned phyllosilicates attesting to a pervasive petrofabric . TAM19B-7 possesses a unique oxygen isotope composition: 0.508‰ for ∆17O and 1.126‰ for δ18O that does not match any known chondrite groups . Although this composition is affected by partial equilibration with Antarctic water, its inferred pre-atmospheric composition would have plotted above the TFL at 16O-poor values. This oxygen isotope space is populated by materials from intensely aqueously altered carbonaceous chondrites . Despite low organic abundances (due to thermal decomposition during atmospheric entry), weak G and D Raman bands corresponding to aromatic macromolecules and aliphatic IR-bands associated with CH2 and CH3 molecules have been identified in TAM19B-7. The average δ13C value of TAM19B-7 is 3±8‰; however, multiple 13C enrichments (δ13C<35‰) are consistent with carbonate phases in carbonaceous chondrite meteorites  are observed (Figure 1). Although carbonate minerals were decomposed by flash-heating during atmospheric entry, the isotopic data support a carbonate-dominated carbon budget for TAM19B-7’s parent body. To summarize, the inferred carbon budget of TAM19B-7’s parent body is likely carbonate-rich with a minor organic component. Alongside existing data this supports an origin in Ceres-like asteroid body. Thus, we advocate for a dedicated sample-return mission to the dwarf planet Ceres  to look for associations with micrometeorites already available in our inventory.  Suttle, M et al. (2020) EPSL 546, 116444.  Castillo-Rogez J., et al. (2018) MAPS 53, 1820.  McSween Jr., H. Y. et al. (2017) MAPS 53, 1793.  Suttle, M.D., et al. (2019) GCA 245, 352.  Alexander, C. O. D., et al. (2015) MAPS 50, 810.