| Title | Garnet-wollastonite skarn, Willsboro, NY, USA | 
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| Description | This sample is about 10 cm across.  It is a metamorphic rock formed by contact metamorphism of Grenville-aged (Precambrian) limestone.  Macroscopic minerals are white, coarse wollastonite, dark brown-red andraditic garnet and speckles of light green diopside.  This sample comes from the eastern side of the Adirondack Mountains, New York. | 
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| Chronostratigraphy | Precambrian | 
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| Geologic province | Grenville | 
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| Location | USA ▹ New York ▹ Essex. Near Willsboro. | 
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| Photographer | Dexter Perkins. 2000. | 
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| Collection | Ward’s Collection of Classic North American Rocks #75. | 
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| Key words | skarn, garnet, wollastonite, Grenville, Precambrian, New York, Willsboro | 
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| Tech details | 159 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens. | 
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| GeoDIL number | 16 | 
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