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Stone and metal cannot be dated but pottery may be dated through surviving residue such as food particles or paint that uses organic material (8).There are a number of ways to enter into a career in studying radiocarbon dating.The rock sample to be dated must be chosen very carefully.

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That is, a fresh mineral grain has its K-Ar "clock" set at zero.

Young rocks have low levels of The rock samples are crushed, in clean equipment, to a size that preserves whole grains of the mineral to be dated, then sieved to help concentrate these grains of the target mineral.

The selected size fraction is cleaned in ultrasound and acid baths, then gently oven-dried.

The mineral sanidine, the high-temperature form of potassium feldspar, is the most desirable.

But micas, plagioclase, hornblende, clays, and other minerals can yield good data, as can whole-rock analyses.

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