Willamette Geological Service
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Analytical Services
X-ray diffraction analysis (XRD) is a powerful tool for identifying both the nature
and abundance of crystalline materials in geologic samples. Analysis of bulk rock
powders is useful for identifying component minerals. For clay minerals, XRD
analysis is the primary means of identification, as the minerals are often too small
to identify by normal microscopic techniques. The technique typically requires
only a small amount of material (about 0.5 - 1.0 g), but more may be needed if
trace minerals are present. We would be happy to discuss how XRD could benefit
you. We have worked with geologists, soil scientists, hydrologists, architectural
conservators, law enforcement agencies, and land use planners - anyone whose
life is impacted by the earth around them!
and abundance of crystalline materials in geologic samples. Analysis of bulk rock
powders is useful for identifying component minerals. For clay minerals, XRD
analysis is the primary means of identification, as the minerals are often too small
to identify by normal microscopic techniques. The technique typically requires
only a small amount of material (about 0.5 - 1.0 g), but more may be needed if
trace minerals are present. We would be happy to discuss how XRD could benefit
you. We have worked with geologists, soil scientists, hydrologists, architectural
conservators, law enforcement agencies, and land use planners - anyone whose
life is impacted by the earth around them!
X-Ray Diffraction Mineralogical Analysis
Bulk Sample Powders $125
Clay Package 1 (<15-& <2-micron fractions) $225
Clay Package 2 (Bulk powder, <15-, <2-micron) $300
Fine Clay Characterization (<2-,<0.5-, <0.1-micron) $350
Clay mineral analyses use highly oriented Mg- and K-saturated samples that are interpreted using ethylene
glycol solvation, controlled humidity, and heat treatments.
Quantitative mineralogical relationships are interpreted using a combination of computer simulation and
internal standards.
Data reported in tabular form with annotated patterns provided.
Bulk Sample Powders $125
Clay Package 1 (<15-& <2-micron fractions) $225
Clay Package 2 (Bulk powder, <15-, <2-micron) $300
Fine Clay Characterization (<2-,<0.5-, <0.1-micron) $350
Clay mineral analyses use highly oriented Mg- and K-saturated samples that are interpreted using ethylene
glycol solvation, controlled humidity, and heat treatments.
Quantitative mineralogical relationships are interpreted using a combination of computer simulation and
internal standards.
Data reported in tabular form with annotated patterns provided.
| Dr. J. Reed Glasmann 31191 Peterson Rd Philomath, OR 97370 541 929-3607 wgsclays@yahoo.com |