I
                                                          carved Lana
                                                          from a 70
                                                          pound pound
                                                          block of
                                                          polyphant
                                                          stone. 
                                                          One
                                                          side of the
                                                          carving is
                                                          left untouched
                                                          to show the
                                                          varied colours
                                                          of the stone
                                                          in its natural
                                                          state. 
                                                          
                                                          Lana
                                                        measures  about
                                                          12.5 inches
                                                          high. 12.5
                                                          inches
                                                          long 
                                                          & 4
                                                          inches wide,
                                                          and weighs about 50.25
                                                    pounds.
                                                   
                                  Polyphant stone is a type of Elvan, a
                                  name used in Cornwall and Devon for
                                  native varieties of
                                  quartz-porphyry.  Most
                                              of the Elvan quarries are
                                              now disused.
                                              
                                            Greenstone
                                  is another name for this stone. 
                                  It is
                                                          basically
                                                          a greenish-grey
                                                          in
                                                          colour, but is
                                                          often
                                                          flecked with other
                                                          unpredictable
                                                          colours from many
                                                          minerals and
                                                          other
                                                          impurities found
                                                          in the
                                                          stone. 
                                    Polyphant was often used for
                                  parts of buildings such as doorways so
                                  they could be finely carved.  
                               
                  
                      
                   
                  Around 400 prehistoric
                          stone axes, made from greenstone, have been
                          found all over Britain, which from
                          petrological analysis appear to come from west
                          Cornwall.  Although the quarry has not
                          been identified, it has been suggested that
                          the Gear, a rock now submerged half a mile
                          from the shore at Penzance, may be the site.
                        
                      The
                      name Polyphant means 'Frog Pool' in Cornish.
                      
                      Yvonne Jerrold
                     
                    
                  
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