Pyrite concretion (extinct Texas location) Kidwell Coll.

Item Description

Two generations of pyrite form this striking, pristine ,flattened floater nodule from the Dallas-Ft Worth Airport in Texas (found during runway expansion many years ago in the 1990s!). Sharp, brilliant brass-yellow, striated cubes to 1.3 cm are beautifully densely intergrown among tiny, intensely sparkly cubes. This locality is now extinct, as runway expansion obliterated the stream bank, where these were found in a Cretaceous shale layer. From the worldwide mineral collection of Albert Lewis Kidwell (January 1, 1919 - August 16, 2008). Al was a well-known mineral collector and research geologist with Carter Oil Company and later Exxon Oil Company in Houston, Texas. The phosphate species Kidwellite was named in his honor in 1974. Seldom on the market today and a fine Texas rarity.