Jump to content

File:Blue calcitic marble, Valentine Mine, Lewis County NY.jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (3,892 × 2,600 pixels, file size: 5.86 MB, MIME type: image/jpeg)

Summary

Description
English: Blue calcitic marble (8.0 cm across at its widest) from the Precambrian of New York State, USA.

This remarkable specimen of blue marble comes from the Valentine Mine in New York State, an active wollastonite mine/quarry. Wollastonite is a calcium pyroxenoid, formed by hydrothermal metamorphism (metasomatism) of marble by hot, silica-rich fluids. Blue calcitic marble is the proximal host rock to the Valentine Wollastonite Skarn Deposit; white calcitic marble occurs distally.

Published analysis shows that blue marble host rocks around the Valentine Wollastonite Skarn Deposit are >98% calcite with minor diopside and graphite. The bluish color may be due to the presence of sub-microscopic graphite inclusions in the calcite crystals.

The Valentine Mine is localed at the intrusive contact between Grenvillian marbles of and Diana Complex syenites (1.118 Ga). The wollastonite skarn is synchronous with the intrusion of Diana Complex syenites (see Gerdes & Valley, 1994), so it also dates to 1.118 Ga (late Mesoproterozoic). The blue marble host rock is slightly older, at about 1.13 to 1.16 Ga.

Age: late Mesoproterozoic, 1.13-1.16 Ga (granulite facies metamorphism to marble during a phase of the Grenville Orogeny)

Locality: Valentine Mine (Gouverneur Talc Company No. 4 Quarry) (wollastonite mine), ~0.75 to 1 mile from the southern side of Lake Bonaparte, ~3.5 air miles southwest of Harrisville, northern Lewis County, northern Adirondack Mountains (northwestern Lowlands, near the Lowlands-Highlands boundary), northern New York State, USA


Info. partly synthesized from:

Basu, A.R. & W.R. Premo. 2001. U-Pb age of the Diana Complex and Adirondack granulite petrogenesis. Proceedings of the Indian Academy of Sciences (Earth and Planetary Sciences) 110: 385-395.

Gerdes, M.L. & J.W. Valley. 1994. Fluid flow and mass transport at the Valentine wollastonite deposit, Adirondack Mountains, New York State. Journal of Metamorphic Geology 12: 589-608.
Date Taken on 25 September 2014, 23:42
Source Blue calcitic marble (proximal host rock to the Valentine wollastonite skarn deposit, late Mesoproterozoic, 1130-1160 Ma; Valentine Mine (Gouverneur Talc Company No. 4 Quarry), south of Lake Bonaparte, northern Lewis County, northern New York State, USA)
Author James St. John

Licensing

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15169970468. It was reviewed on 26 September 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

26 September 2014

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

25 September 2014

image/jpeg

cd62dd39827f3a8259a5f1eedab3bedd03f0c94b

6,141,397 byte

2,600 pixel

3,892 pixel

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current04:25, 26 September 2014Thumbnail for version as of 04:25, 26 September 20143,892 × 2,600 (5.86 MB)TillmanTransferred from Flickr via Flickr2commons

The following page uses this file:

Global file usage

The following other wikis use this file:

Metadata