Natural molybdenum oxides include molybdite (Mo[O.sub.3]) and tugarinovite (Mo[O.sub.2]).
Anderson, "Thermal reduction of molybdite and hematite in water and hydrogen peroxide-bearing solutions: Insights on redox conditions in Hydrothermal Diamond Anvil Cell (HDAC) experiments," Chemical Geology, vol.
24), Amanita rubescens, Ganoderma lobatum, Gymnopus polyphyllus, Lentinula boryana, Omphalotus mexicanus, Phylloporus rhodoxanthus y Stropharia semiglobata; 15 en pastizales, entre las que destacan Agaricus campestris, Calvatia cyathiformis, Chlorophyllum
molybdites, Lycoperdon marginatum, Panaeolus antillarum y Psilocybe cubensis.