@article{20100614092847528.stokeshi,
 author={{C23}},
 title={Hand specimen with quantity 0.285 kg at \nolinkurl{/ISEI/stone storage/Room B/A/A-4/Cameroon 5002/}},
 journal={\href{http://dream.misasa.okayama-u.ac.jp/?q=20100614092847528.stokeshi}{DREAM}},
 volume={19},
 pages={20100614092847528.stokeshi},
 year={2010},
 url={http://dream.misasa.okayama-u.ac.jp/?q=20100614092847528.stokeshi},
}

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    <global_id>20190524115052-557660</global_id>
    <name>C23_Mg#</name>
    <device/>
    <technique>100Mg/(Mg+Fe2+)</technique>
    <operator></operator>
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    <sample_name>C23</sample_name>
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      <name>locality of C23</name>
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      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
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      <analysis>
        <nickname>Mg#</nickname>
        <value>51.1</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
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  </acquisition>
  <acquisition>
    <global_id>20190522153219-107193</global_id>
    <name>C23</name>
    <device>XRF PANalytical PW2400</device>
    <technique>XRF procedures of Takei (2002)</technique>
    <operator>Yokoyama</operator>
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    <sample_name>C23</sample_name>
    <description/>
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      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
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      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
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      <analysis>
        <nickname>SiO2</nickname>
        <value>46.3</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>TiO2</nickname>
        <value>3.3</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>Al2O3</nickname>
        <value>16.0</value>
        <unit>%</unit>
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        <label/>
        <info/>
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      <analysis>
        <nickname>MnO</nickname>
        <value>0.2</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>MgO</nickname>
        <value>5.34</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>CaO</nickname>
        <value>10.0</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>Na2O</nickname>
        <value>4.51</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>K2O</nickname>
        <value>1.84</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>P2O5</nickname>
        <value>0.86</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>LOI</nickname>
        <value>-0.54</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>total</nickname>
        <value>99.7</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
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      <analysis>
        <nickname>Cr2O3</nickname>
        <value>114.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>NiO</nickname>
        <value>67.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
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  <acquisition>
    <global_id>20190522153239-815273</global_id>
    <name>C23_Fe2O3</name>
    <device/>
    <technique>calculation from Fe2O3 total</technique>
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    <sample_name>C23</sample_name>
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      <global_id>20190626120057-013394</global_id>
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      <longitude>9.26666666666667</longitude>
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      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
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    <chemistries>
      <analysis>
        <nickname>Fe2O3</nickname>
        <value>11.9</value>
        <unit>%</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
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  <acquisition>
    <global_id>20190524144102-735896</global_id>
    <name>C23_Nd</name>
    <device>TIMS Finnigan MAT261, MAT262 and Triton TI</device>
    <technique>Nd isotopes_procedures of Nakamura et al. (1991, 2003)</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description></description>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
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    <chemistries>
      <analysis>
        <nickname>Nd143zNd144</nickname>
        <value>0.512779</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
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  <acquisition>
    <global_id>20190524122322-807692</global_id>
    <name>C23</name>
    <device>Q-ICPMS Agilent 7500cs</device>
    <technique>Q-ICP-MS_procedures of Lu et al. (2007)</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description/>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
    </place>
    <chemistries>
      <analysis>
        <nickname>B</nickname>
        <value>3.01</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Zr</nickname>
        <value>417.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Hf</nickname>
        <value>8.54</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Nb</nickname>
        <value>115.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Ta</nickname>
        <value>6.26</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
  </acquisition>
  <acquisition>
    <global_id>20190524122249-765225</global_id>
    <name>C23</name>
    <device>Q-ICPMS Agilent 7500cs</device>
    <technique>Q-ICP-MS_procedures of Makishima and Nakamura (1997, 1999, 2006)</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description></description>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
    </place>
    <chemistries>
      <analysis>
        <nickname>Li</nickname>
        <value>8.02</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Rb</nickname>
        <value>46.8</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Sr</nickname>
        <value>1276.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Y</nickname>
        <value>40.9</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Cs</nickname>
        <value>0.542</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Ba</nickname>
        <value>578.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>La</nickname>
        <value>87.5</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Ce</nickname>
        <value>181.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Pr</nickname>
        <value>20.9</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Nd</nickname>
        <value>79.0</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Sm</nickname>
        <value>13.3</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Eu</nickname>
        <value>4.14</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Gd</nickname>
        <value>11.3</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Tb</nickname>
        <value>1.49</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Dy</nickname>
        <value>7.81</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Ho</nickname>
        <value>1.41</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Er</nickname>
        <value>3.31</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Tm</nickname>
        <value>0.468</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Yb</nickname>
        <value>2.95</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Lu</nickname>
        <value>0.387</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Pb</nickname>
        <value>4.52</value>
        <unit>ppm</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
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  <acquisition>
    <global_id>20190524144406-186041</global_id>
    <name>C23</name>
    <device>TIMS Finnigan MAT261, MAT262 and Triton TI</device>
    <technique>Sr isotopes_procedures of Yoshikawa and Nakamura (1993)</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description/>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
    </place>
    <chemistries>
      <analysis>
        <nickname>Sr87zSr86</nickname>
        <value>0.703276</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
  </acquisition>
  <acquisition>
    <global_id>20190524144310-883254</global_id>
    <name>C23_Pb</name>
    <device>TIMS Finnigan MAT261, MAT262 and Triton TI</device>
    <technique>Pb isotopes_procedures of Kuritani and Nakamura (2002, 2003)</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description></description>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
    </place>
    <chemistries>
      <analysis>
        <nickname>Pb206zPb204</nickname>
        <value>20.413</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Pb207zPb204</nickname>
        <value>15.659</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Pb208zPb204</nickname>
        <value>40.187</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
  </acquisition>
  <acquisition>
    <global_id>20190524153542-501052</global_id>
    <name>C23</name>
    <device>TIMS Thermo-Fisher MAT262</device>
    <technique>U-Series_procedures of Yokoyama et al. (1999, 2001, 2003)</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description/>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
    </place>
    <chemistries>
      <analysis>
        <nickname>Th</nickname>
        <value>9.046</value>
        <unit>ug/g</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>U</nickname>
        <value>2.474</value>
        <unit>ug/g</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Th230zTh232</nickname>
        <value>0.999</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>U238zTh232</nickname>
        <value>0.83</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Th230zU238</nickname>
        <value>1.204</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>U234zU238</nickname>
        <value>1.002</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
  </acquisition>
  <acquisition>
    <global_id>20190524155212-024015</global_id>
    <name>C23</name>
    <device>TIMS Thermo-Fisher MAT262</device>
    <technique>TIMS with total evaporation</technique>
    <operator>Yokoyama</operator>
    <sample_global_id>20100614092847528.stokeshi</sample_global_id>
    <sample_name>C23</sample_name>
    <description/>
    <place>
      <global_id>20190626120057-013394</global_id>
      <name>locality of C23</name>
      <longitude>9.26666666666667</longitude>
      <latitude>4.18333333333333</latitude>
      <elevation>1500.0</elevation>
      <description> Mt. Cameroon volcano, 1959 eruption, ENE flank of a crater</description>
    </place>
    <chemistries>
      <analysis>
        <nickname>Ra226</nickname>
        <value>1151.0</value>
        <unit>fg/g</unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
      <analysis>
        <nickname>Ra226zTh230</nickname>
        <value>1.145</value>
        <unit></unit>
        <uncertainty/>
        <label/>
        <info/>
      </analysis>
    </chemistries>
  </acquisition>
</acquisitions>