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File:Hexagonite (Gouverneur Marble, Mesoproterozoic; Gouverneur Talc Mine, Fowler, St. Lawrence County, New York State, USA) (31133877754).jpg

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Hexagonite rock from the Precambrian of New York State, USA. (5.5 cm across along the base)

This attractive rock is from a talc mine in New York. Hexagonite is a manganoan tremolite amphibole. Ordinary tremolite is white, but Mn-rich tremolite has a pleasant lavender color.

Geologic unit: Gouverneur Marble, Oswegatchie Group, Mesoproterozoic, metamorphism at ~1.1 Ga

Locality: Gouverneur Talc Mine, near the town of Fowler, southwestern St. Lawrence County, northwestern Adirondack Mountains, northern New York State, USA

Photo gallery of hexagonite: <a href="http://www.mindat.org/gallery.php?min=11106" rel="nofollow">www.mindat.org/gallery.php?min=11106</a>

More info. in:

Ross et al. (1968) - Triclinic talc and associated amphiboles from Gouverneur Mining District, New York. American Mineralogist 53: 751-769. (online at <a href="http://www.minsocam.org/ammin/AM53/AM53_751.pdf" rel="nofollow">www.minsocam.org/ammin/AM53/AM53_751.pdf</a>)
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Source Hexagonite (Gouverneur Marble, Mesoproterozoic; Gouverneur Talc Mine, Fowler, St. Lawrence County, New York State, USA)
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/31133877754 (archive). It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

6 December 2019

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Date/TimeThumbnailDimensionsUserComment
current03:18, 6 December 2019Thumbnail for version as of 03:18, 6 December 20192,867 × 2,331 (5.99 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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