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William Niven
William Niven (2 October 1850 – 2 June 1937) was a mineralogist and archeologist noted for his discovery of the minerals yttrialite, thorogummite, aguilarite and nivenite (named after him), as well as a set of controversial tablets. Originally from Scotland, Niven came to the United States in 1879, where he became heavily involved in mineralogy and mining.
==Mineral discoveries==
Niven's first major contribution to mineralogy occurred in 1889 while he was on an expedition to Llano County, Texas, on behalf of Thomas Edison. Niven was looking for the mineral gadolinite, which was used as a street lamp filament. It was on this expedition that he discovered three new minerals, yttrialite, thorogummite, and nivenite.
In the 1890s, Niven discovered the mineral aguilarite while on an exploration trip to Mexico. He also found new deposits of rare minerals in New York and New Jersey.
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