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Hand Samples > Pyrolusite dendrites on a limestone joint surface by Callan Bentley

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About This Gigapan

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Taken by
Callan Bentley Callan Bentley
Explore score
1
Size
0.93 Gigapixels
Views
1021
Date added
Dec 14, 2011
Date taken
Jan 11, 2012
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Description

Collected in a quarry in West Virginia, along old route 55 in the valley of the Lost River, this block of limestone (measuring 18.5 cm by 4.9 cm) shows delicate branching black shapes resembling tree branches. These are dendrites of the mineral pyrolusite. They are completely inorganic, and are not fossils.
Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as seen here:
gigamacro.com/gigapixel-macro-imaging-system Will open in a new tab or window/


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Stitcher Notes

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GigaPan Stitch version 1.2.0087 (Windows)
Panorama size: 930 megapixels (54716 x 17004 pixels)
Input images: 90 (15 columns by 6 rows)
Field of view: 3.1 degrees wide by 1.0 degrees high (top=0.9, bottom=-0.1)
Settings:
Vignette correction off
Use larger blending region
Original image properties:
Camera make: unknown
Camera model: unknown
Image size: 5184x3456 (17.9 megapixels)
Capture time: unknown
Aperture: unknown
Exposure time: unknown
ISO: unknown
Focal length (35mm equiv.): unknown
White balance: unknown
Exposure mode: unknown
Horizontal overlap: 30.5 to 34.0 percent
Vertical overlap: 21.9 to 25.9 percent
Computer stats: 4000.13 MB RAM, 4 CPUs
Total time 11:34 (7.7 seconds per picture)
Alignment: 2:01, Projection: 1:07, Blending: 8:26
(Preview finished in 4:32)

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