| http://www.w3.org/ns/prov#value | - It was first discovered in 1953 in the Mammoth-Saint Anthony Mine in Pinal County, Arizona by Percy W. Porter, a mining engineer who handpicked a 401.5-mg sample.[2] Porter would later submit for analysis and it was then that Fred A. Hildebrand suggested that the sample was a new mineral after taking a powder x-ray picture.[2] It was named for Joseph Murdoch (1890???1973), American mineralogist.[3
|
