File:Quartz_monzonite_36mw1037.jpg
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Summary
DescriptionQuartz monzonite 36mw1037.jpg |
English: Bedrock sample from a UGSG drill core at Western Cape Cod, Massachusetts.
Sample 36MW1037, a quartz monzonite, contains plagioclase (45%), K-feldspar (35%), quartz (15%), biotite (3%), and trace amounts of garnet, chlorite, oxides, epidote, and sphene. Seritized plagioclase is intergrown with K-feldspar and in some places shows unaltered zones that may suggest regrowth. Perthitic K-feldspar porphyries show tartan and some carlsbad twinning. Quartz occurs in domains up to 3 mm thick, and commonly exhibits subgrain development and undulose extinction. Biotite is chloritized near its edges. Garnet occurs as small (0.2 mm) rounded isotropic inclusions within altered plagioclase. |
Source | http://pubs.usgs.gov/of/2003/of03-221/htmldocs/bedrock_photos/36mw1037.htm |
Author | B.W. Hallett, V. F. Paskevich, L.J. Poppe, S.G. Brand, and D.S. Blackwood |
Licensing
Public domainPublic domainfalsefalse |
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:19, 27 May 2010 | 2,422 × 2,112 (751 KB) | Woudloper | {{Information |Description={{en|1=Bedrock sample from a UGSG drill core at Western Cape Cod, Massachusetts. Sample 36MW1037, a quartz monzonite, contains plagioclase (45%), K-feldspar (35%), quartz (15%), biotite (3%), and trace amounts of garnet, chlori |
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Width | 2,422 px |
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Height | 2,112 px |
Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 236.2205 dpc |
Vertical resolution | 236.2205 dpc |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 11:06, 27 May 2010 |
Color space | Uncalibrated |
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