Leonard James Spencer CBE FRS [1] (7 July 1870 – 14 April 1959) was a British geologist. He was an Honorary member of the Royal Geological Society of Cornwall, and also a recipient of its Bolitho Medal. [2] [3] He was president of the Mineralogical Society of Great Britain and Ireland from 1936 to 1939. [4] In mineralogy, Spencer was an original investigator who described several new minerals, including miersite, tarbuttite and parahopeite. He also did important work as a curator, editor and bibliographer. [5] He was the third person to receive the Roebling Medal, the highest award of the Mineralogical Society of America. [6] In 1937, he was awarded the Murchison Medal of the Geological Society of London. He wrote at least 146 articles for the Encyclopædia Britannica Eleventh Edition. [7]
His daughter, Penelope Spencer became a successful free-style dancer and choreographer. [8]