GEOLOGY NEWS!!!!!!!!!!!!!!!!!!
Earthquakes everywhere!!!!! HAITI WAS HIT!!!!!!!!!! If you want to help Haiti please visit ................................................................................................... HaitiJanuary 19, 2010Volcanoes 2January 5, 2010AsteroidJanuary 5, 2010VolcanoesJanuary 5, 2010PlanetsJanuary 5, 2010Planet EarthJanuary 5, 2010EarthquakeJanuary 5, 2010EarthquakesJanuary 5, 2010FossilsJanuary 5, 2010![]() URANIUM HCZ-geology@hotmail.com
| About Me
CategoriesRecent PostsBlog Archive![]() ![]() BLACK GRANITE HCZ-geology@hotmail.com
| |||||||

"Herkimer Diamonds" is the name given to the doubly terminated quartz crystals found in Herkimer County, New York and surrounding areas. Note that these crystals have the typical hexagonal habit of quartz, however, instead of having a termination on one end they are doubly terminated. This is a result of the crystals growing with very little or no contact with their host rock. Such doubly terminated crystals are very rare and this is part of what makes Herkimer Diamonds so popular with mineral collectors.
Diamonds formed in cavities within the dolostone. These cavities are frequently lined with drusy quartz crystals and often are coated with a tarry hydrocarbon.

