Search results
Results From The WOW.Com Content Network
White phosphorus, yellow phosphorus, or simply tetraphosphorus (P 4) is an allotrope of phosphorus. It is a translucent waxy solid that quickly yellows in light (due to its photochemical conversion into red phosphorus ), [ 2 ] and impure white phosphorus is for this reason called yellow phosphorus.
In the early years, phosphate from the Peace River area was barged to Punta Gorda, or shipped by rail to Port Tampa. Other important ports were later established at Seddon Island, Boca Grande, and Rockport. Today Mosaic Inc. mines the area exclusively and is seeking to mine properties further south, in Hardee and Manatee Counties.
The highest-grade deposits were found where weathering or shallow groundwater had preferentially dissolved away the calcium carbonate. The last mine in Tennessee, which produced phosphate rock from the Bigby-Cannon formation, closed in 1991. The blue phosphate rock was found in the Devonian-age Chattanooga Shale.
Production of the red form of phosphorus, "amorphous phosphorus" was commenced by Arthur Albright in 1851, by heating white phosphorus in a sealed crucible under a vacuum. It had been discovered by Professor Schrötter, in Vienna and patented by him. However, it was explosive to make and Albright discovered a safe means of production.
A U.S.-led military coalition also deployed white phosphorus weapons in Syria and Iraq in its war against ISIS in 2017, according to HRW. Israel, too, previously used the substance during a 2008 ...
The Phosphoria Formation of the western United States is a geological formation of Early Permian age. [4] It represents some 15 million years of sedimentation, reaches a thickness of 420 metres (1,380 ft) and covers an area of 350,000 square kilometres (140,000 sq mi).
White phosphorus smokescreens are fired by the U.S. Army as part of an early morning patrol on Nov. 6, 2004, on the outskirts of Fallujah, Iraq.
Now, an investigation by The Washington Post has found that the white phosphorus shells used in that attack were made in the United States. While white phosphorus can have military uses ...