Abstract
Lithium borate decomposition was tested for 26 National Bureau of Standard samples and 47 minerals. Those minerals that might occur in silicate rocks and that are only partly decomposed by this method include zircon, some metal oxides, some rare-earth phosphates, one rare-earth fluoride (fluocerite), and many sulfides. For some minerals, decomposition is facilitated by the addition of quartz to the sample.
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