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Photomicrograph of diallage crystal in gabbro, showing rims of brown hornblende along the contacts with feldspar. New London County, Connecticut. 1904.

Dates

Date Taken
1904

Summary

Photomicrograph of diallage crystal in gabbro, showing rims of brown hornblende along the contacts with feldspar. The black veinlet is limonite. Magnified 30 diameters. Without crossed nicols. New London County, Connecticut. 1904. Plate 9-A in U.S. Geological Survey. Bulletin 492. 1912.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Loughlin, Gerald Francis

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Identifiers

Type Scheme Key
name photoLibrary lgf00315
number photoLibrary 22398
batch photoLibrary btch355
number_in_book photoLibrary 315

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