Sodium
Na
atomic number
11
melting point
97.72°C

1. Expose a small mineral fragment (using a forceps or tweezers) or a bit of powdered mineral (using a platinum wire loop) to a hot flame using a lamp, candle, or Bunsen gas burner; sodium will produce an intense and persistent yellow flame that is invisible when viewed through a piece of blue glass; (some sodium-bearing silicates must be mixed with powdered gypsum to attain the same results from this test).

2. Heat a small mineral fragment (or a bit of powdered mineral) with a hot flame using a lamp, candle, or Bunsen burner, after intense firing place the mineral sample on a strip of moistened turmeric paper; many sodium-bearing minerals will test alkaline on the paper.