Interrogating sedimentary silica-rich rocks using a multi-technique approach: first insights on preservation of organic molecules in heterogeneous geological systems - Montecinos Muñoz, Patrício Rodrigo; Oliveira, Cristiano Luis Pinto de; Ilavsky, Jan; Andrade, Marcelo Barbosa de; Lourenço, Rafael André; Oblitas, Raissa L.; Cavalheiro, Eder Tadeu Gomes; Andrade, Fábio Ramos Dias de (RAU Annual Users Meeting LNLS/CNPEM, 2021)