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Microscopic tubes in igneous rocksMicroscopic tubes have been observed in several igneous rocks and may be quite common. They occur in single crystals and have either elliptical or circular cross-sections 1 to 5 microns in diameter and are ten to hundreds of microns long. Microtubes may be hollow or partially or completely filled with another phase, but are distinct from acicular crystals of accessory minerals such as rutile. Microtubes can form by at least three processes: (1) the partial annealing of microcracks, (2) the natural etching of dislocations, or (3) the primary inclusion of fluid material during crystal growth.
Document ID
19770040752
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Richter, D.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Simmons, G.
(MIT Cambridge, Mass., United States)
Date Acquired
August 8, 2013
Publication Date
February 1, 1977
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 34
Issue: 1, Fe
Subject Category
Earth Resources And Remote Sensing
Accession Number
77A23604
Funding Number(s)
CONTRACT_GRANT: NSF A-40756
CONTRACT_GRANT: NGR-22-009-540
Distribution Limits
Public
Copyright
Other

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