Florida Geological Survey - Geology Topics
|
|
|
Identification: Zircon is a zirconuim silicate, ZrSiO4. Though commonly
colorless, especially in Florida sands, zircon may be red,
blue, brown, or lavender. The streak is colorless, the
specific gravity 4.4 to 4.8 and the hardness 7.5. In
Florida, zircon occurs as sand-size particles and may be
distinguished from quartz by its brilliant luster and smooth
crystal faces as seen with the aid of a microscope.
Occurrence: Zircon is a heavy mineral in Florida's Recent and ancient beach sands.
Use: Zircon, because of its ability to
withstand very high temperatures, is made into bricks and
cements used in foundries and in furnaces for making
aluminum and glass.
|
 |
|
