| 摘要 |
Determination of the mineral content of a sample by suspending a needle at its center of mass horizontally above the sample is provided. In doing this, the needle will rotate or swing back and forth along an arc of defined starting and ending positions in a horizontal plane. Samples of different mineral content will cause the needle to swing back and forth along a similar arc but with different defined starting and ending positions. By recording the starting and ending positions of the arc for known samples a chart is compiled that can be used to make a determination of the mineral content of unknown samples. An apparatus and method of using the same is also provided.
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