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.
[4] In mineralogy, Spencer was an original investigator who described several new minerals, including miersite, tarbuttite and parahopeite.
[5] He was the third person to receive the Roebling Medal, the highest award of the Mineralogical Society of America.
[7] His daughter, Penelope Spencer became a successful free-style dancer and choreographer.