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. The extraction and concentration of biomineralized components from sedimentor living materials is time consuming and laborious and often involves stepsthat remove either the calcareous or siliceous part, in addition to organicmatter. However, a relatively quick and easy method using a commercialcleaning fluid for kitchen drains, sometimes combined with a kerosene soakingstep, can produce remarkable results. In this study, the method is applied tosediments and living materials bearing calcareous (e.g., coccoliths,foraminiferal tests, holothurian ossicles, ichthyoliths, and fish otoliths)and siliceous (e.g., diatom valves, silicoflagellate skeletons, and spongespicules) components. The method preserves both components in the samesample, without etching or partial dissolution, but is not applicable tounmineralized components such as dinoflagellate thecae, tintinnid loricae,pollen, or plant fragments.

Modified cleaning method for biomineralized components