Leonard James Spencer CBE FRS (7 July 1870 – 14 April 1959) was a British geologist. He was an Honorary member of the

Royal Geological Society of Cornwall The Royal Geological Society of Cornwall is a geological society based in Penzance, Cornwall in the United Kingdom. It was founded in 1814 to promote the study of the geology of Cornwall, and is the second oldest geological society in the world ...

, and also a recipient of its Bolitho Medal. He was president of the Mineralogical Society of Great Britain and Ireland from 1936 to 1939. In mineralogy Spencer was an original investigator who described several new minerals, including miersite,

tarbuttite Tarbuttite is a rare phosphate mineral with formula Zn2(PO4)(OH). It was discovered in 1907 in what is now Zambia and named for Percy Tarbutt. Description and habit Tarbuttite is white, yellow, red, green, brown, or colorless; in transmitted li ...

and

parahopeite Zinc phosphate is an inorganic compound with the formula Zn3( PO4)2. This white powder is widely used as a corrosion resistant coating on metal surfaces either as part of an electroplating process or applied as a primer pigment (see also red l ...

. He also did important work as a curator, editor and bibliographer. He was the third person to receive the Roebling Medal, the highest award of the Mineralogical Society of America. He wrote at least 146 articles for the Encyclopædia Britannica Eleventh Edition. His daughter,

Penelope Spencer Penelope Spencer (30 December 1901–3 October 1993) was an English dancer who is remembered for her modern approach to free-style dancing and choreography. Early life Born in the London district of Battersea, she was the daughter of geologist L ...

became a successful free-style dancer and choreographer.

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* * http://www.minsocam.org/MSA/collectors_corner/arc/roebling3.htm * Fellows of the Royal Society 1870 births 1959 deaths English geologists Commanders of the Order of the British Empire {{UK-geologist-stub