Skip to Main Content
Book Chapter

Amorphous and Crystalline Solids as Artifacts in SEM Images

By
Kitty L. Milliken
Kitty L. Milliken
Bureau of Economic Geology, University of Texas at Austin, Austin, Texas, U.S.A. (e-mail: kitty.milliken@beg.utexas.edu)
Search for other works by this author on:
Terri Olson
Terri Olson
Digital Rock Petrophysics, Golden, Colorado, U.S.A. (e-mail: tmolson8550@gmail.com)
Search for other works by this author on:
Published:
January 01, 2016

Abstract

Minerals can precipitate in samples after coring and after preparation for scanning electron microscope (SEM) imaging. Re-deposition of solids from ion milling also produces artifacts that can be observed in images. Both mineral precipitates and re-deposited solid mixtures can be obvious artifacts, but they can also be subtle and challenging to interpret as features that are not present in the subsurface. The most common mineral precipitates are hydrous calcium sulfate (gypsum or bassanite) and halite. Iron sulfate minerals are also commonly observed. These types of artifacts are illustrated, with examples from ion-milled, mechanically polished, and freshly broken surfaces of various sedimentary rocks. Recognition of these artifacts is important because they can reduce porosity and pore size in SEM images and can affect measurements of rock composition and interpretations of pore fluid chemistry.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

AAPG Memoir

Imaging Unconventional Reservoir Pore Systems

Terri Olson
Terri Olson
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
112
ISBN electronic:
9781629812755
Publication date:
January 01, 2016

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now