Willamette Geological Service
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Analytical Services
Sometimes you just need to know what a rock is made of - be it natural or man made. In many cases,
a thin section prepared from a sample will offer details that go beyond what can be done by XRD or
SEM analysis. Whereas XRD may give the bulk mineral properties of a rock, thin section analysis
reveals how the rock is put together. In the case of man-made stone products, we may be able to
reconstruct the ingredients and source of materials used in historic structures - maybe even help
explain why structures fall apart!
a thin section prepared from a sample will offer details that go beyond what can be done by XRD or
SEM analysis. Whereas XRD may give the bulk mineral properties of a rock, thin section analysis
reveals how the rock is put together. In the case of man-made stone products, we may be able to
reconstruct the ingredients and source of materials used in historic structures - maybe even help
explain why structures fall apart!
Petrographic Analysis
Petrographic description of thin section (no photos) $75
Petrographic description with 2 photos $125
Petrographic description with 300 point count $250
-includes grain size measurement (100 grains)
Thin section preparation @ cost plus handling fee
Custom analyses by quotation
Petrographic description of thin section (no photos) $75
Petrographic description with 2 photos $125
Petrographic description with 300 point count $250
-includes grain size measurement (100 grains)
Thin section preparation @ cost plus handling fee
Custom analyses by quotation
Lithic Sandstone, Indonesia
"Faux" marble cast stone manufactured
via a 2-phase molding process that
utilized a core of locally-derived volcanic
sand cement and an outer rim of coarse
crushed dolomite.
via a 2-phase molding process that
utilized a core of locally-derived volcanic
sand cement and an outer rim of coarse
crushed dolomite.
| Dr. J. Reed Glasmann 31191 Peterson Rd Philomath, OR 97370 541 929-3607 wgsclays@yahoo.com |
Nontronite in vesicle in basalt,
Columbia River Basalt, Oregon
Columbia River Basalt, Oregon