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Image Description |
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| Steam Yacht Nakhoda |
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54k |
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| USS Zircon (PY 16) |
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125k |
Namesake: Zircon is a mineral belonging to the group of nesosilicates. Its chemical name is zirconium silicate, and its corresponding chemical formula is ZrSiO4. Zircon forms in silicate melts with large proportions of high field strength incompatible elements. For example, hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is tetragonal crystal system. The natural color of zircon varies between colorless, yellow-golden, red, brown, blue and green. Colorless specimens that show gem quality are a popular substitute for diamond and are also known as "Matura diamond". The name derives from the Persian zargun, meaning "gold-hued". This word is corrupted into "jargoon", a term applied to light-colored zircons. The English word "zircon" is derived from Zirkon, which is the German adaptation of this word. Yellow, orange and red zircon is also known as "hyacinth", from the flower hyacinthus, whose name is of Ancient Greek origin |
Tommy Trampp |
12131607 |
85k |
During World War II.
Photo via Flickr |
John Spivey |
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79k |
Underway, during World War II
Courtesy of Donald M. McPherson, 1974
U.S. Navy photo NH 81385 |
Naval History and Heritage Command |
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191k |
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347k |
22 August 1943
Gulf of Guinea
Photo taken from a ZP-14 airship out of NAS Weeksville, Elizabeth City, NC
National Archives photo 80-G 80037 |
National Archives |
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164k |
23 November 1944
National Archives photo 80-G-179811 |
