A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Anorthosite, Near Elizabethtown, Essex County, New York |
|---|---|
| Description | This specimen shows a nearly pure aggregate of plagioclase. Larger blue feldspars are conspicuous in a finer granulated, light colored groundmass. Veins of calcite, and clinopyroxene altering to hornblende, are also locally present. This sample is 9 cm across. |
| Chronostratigraphy | Precambrian |
| Lithostratigraphy | Adirondack anorthosite (Mt. Marcy type) |
| Geologic province | Adirondack Mountains |
| Location | USA ▹ New York ▹ Essex. Near Elizabethtown. |
| Photographer | Mike Davis. 2001-02-22. |
| Collection | Ward’s Collection of Classic North American Rocks #32. |
| Key words | anorthosite, New York |
| Tech details | 848 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 136 |
 | |