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Metal and stones cannot be directly dated unless they have organic materials embedded in them.

Any carbon-containing material that affects the carbon 14 content of any given sample is therefore a contaminant.It must be noted that radiocarbon dating is only applicable to materials that were once part of a living organism.Bones, shells, wood, charcoal, peat, linen, wool, and parchment are the common materials submitted for radiocarbon testing.Materials such as charcoal, wood, peat, and textiles typically undergo the acid-alkali-acid (AAA) method before radiocarbon dating.Learn more Materials such as sediments and soils typically undergo acid washes (no alkali) before radiocarbon dating.

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