Title | Hornblende schist, Gouverneur, New York |
Description | This is a typical metamorphosed mafic rock, being composed mostly of hornblende and plagioclase. Such rocks are sometimes termed “metabasite” or “amphibolite.” Hornblende crystals do not line up parallel or cleave in sheets as well as micas do, but still can give rocks a somewhat “schisty” character, as in this sample. The specimen is 8 cm across. |
Location | USA ▹ New York ▹ St. Lawrence. Near Gouverneur. |
Photographer | Nessa Eull. 2001-04-26. |
Collection | Ward’s University Rock Collection #189. |
Key words | hornblende, schist, New York |
Tech details | 745 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens. |
GeoDIL number | 427 |
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