|
 ENERGY PROGRAM NEWSLETTER
CONTACT
Paul Hackley
Lead Geologist
703.648.6458
Sharon Swanson
Lead Geologist
703.648.6453
Peter Warwick
Lead Geologist
703.648.6469
Laboratory Phone
703.648.6467
|
|
|
Photomicrograph Atlas
Vitrinite in Metallurgical Bituminous Coals
Vitrinite: The predominant maceral in most coals of intermediate reflectance occurring as substantial volumes of more or less uniformly reflecting material or as a matrix enclosing particles of other macerals and mineral matter or as particles or bands intermixed with other maceral fragments (ASTM 2008).
Representative examples of macerals are labeled on each photomicrograph. Click on the thumbnail images for a larger and more detailed view. Use the "back" button on your browser to return to the Atlas:
Photomicrograph of high volatile B bituminous coal from Colorado with a mean maximum reflectance of 0.70%. The maceral shown is vitrinite. |
Photomicrograph of high volatile B bituminous coal from Colorado with a mean maximum reflectance of 0.70%. Macerals shown include vitrinite, sporinite, and inertodetrinite. |
Photomicrograph of high volatile B bituminous coal from Colorado with a mean maximum reflectance of 0.70%. Macerals shown include vitrinite and inertodetrinite. |
| Photomicrograph of high volatile B bituminous coal from Colorado with a mean maximum reflectance of 0.70%. Macerals shown include vitrinite and sporinite. |
Photomicrograph of high volatile B bituminous coal from Colorado with a mean maximum reflectance of 0.70%. Macerals shown include vitrinite, sporinite, semifusinite, and inertodetrinite. |
Photomicrograph of high volatile B bituminous coal from Colorado with a mean maximum reflectance of 0.70%. Macerals shown include vitrinite, sporinite, and inertodetrinite. |
| Photomicrograph of high volatile A bituminous coal from West Virginia with a mean maximum reflectance of 0.88%. Macerals shown include vitrinite, micrinite, sporinite, and inertodetrinite. |
Photomicrograph of high volatile A bituminous coal from West Virginia with a mean maximum reflectance of 0.88%. Macerals shown include vitrinite, micrinite, and sporinite. |
Photomicrograph of high volatile A bituminous coal from West Virginia with a mean maximum reflectance of 0.88%. The maceral shown is vitrinite. |
| Photomicrograph of high volatile A bituminous coal from West Virginia with a mean maximum reflectance of 0.88%. The maceral shown is vitrinite. |
Photomicrograph of high volatile A bituminous coal from West Virginia with a mean maximum reflectance of 0.88%. Macerals shown include vitrinite, micrinite, sporinite, and inertodetrinite. |
Photomicrograph of high volatile A bituminous coal from West Virginia with a mean maximum reflectance of 0.88%. The maceral shown is vitrinite. |
More vitrinite
photomicrograph images Return to Photomicrograph Atlas index Reference
American Society for Testing and Materials (ASTM), 2008, D 2799-05a Standard Test Method for Microscopical Determination of the Maceral Composition of Coal: Annual Book of ASTM Standards, Petroleum Products, Lubricants, and Fossil Fuels, v.05.06, Gaseous Fuels; Coal and Coke, [p 349-352].
Top of Page
|
|
LABORATORY VITRINITE IMAGES 1-12 ARE CURRENTLY BEING DISPLAYED ON THIS PAGE
Proceed to images 13-24 or mouseover the atlas below to navigate all vitrinite images:
Rmax
 RECENT PUBLICATIONS
Thermal maturity and organic composition of Pennsylvanian coals and carbonaceous shales, north-central Texas: implications for coalbed gas potential, (2009): International Journal of Coal Geology
Outside Publication - Request copy, email author.
RELATED LINKS
ASTM Subcommittee D05.28 on Petrographic Analysis of Coal and Coke:
Non-USGS Website
|
|
U.S. Department of the Interior |
U.S. Geological Survey
)
)
)
)
)
)
)
)
)
)
)
)