Vote for your favorite mineral in #MinCup25! - Kosmochlor vs. Azurite
It's a battle of green vs blue as rare but vibrant chromium-bearing kosmochlor up against the deep blue copper alteration mineral azurite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Willman, Harold Bowen (1973) Rock stratigraphy of the Silurian system in northeastern and northwestern Illinois. Circular 479. Illinois State Geological Survey

Advanced
   -   Only viewable:
Reference TypeReport (issue)
TitleRock stratigraphy of the Silurian system in northeastern and northwestern Illinois
ReportCircular
AuthorsWillman, Harold BowenAuthor
Year1973
Issue<   479   >
PublisherIllinois State Geological SurveyPlaceUrbana, IL
Classification
Not set		LoC
Not set
Mindat Ref. ID17426308Long-form Identifiermindat:1:5:17426308:3
GUID0
Full ReferenceWillman, Harold Bowen (1973) Rock stratigraphy of the Silurian system in northeastern and northwestern Illinois. Circular 479. Illinois State Geological Survey
Plain TextWillman, Harold Bowen (1973) Rock stratigraphy of the Silurian system in northeastern and northwestern Illinois. Circular 479. Illinois State Geological Survey
InIllinois State Geological Survey - Circular

See Also

These are possibly similar items as determined by title/reference text matching only.

MacClintock, Paul, Willman, Harold Bowen (1959) Geology of Buda Quadrangle, Illinois. Circular 275. Illinois State Geological Survey
Willman, Harold Bowen, Kolata, Dennis R. (1978) The Platteville and Galena groups in northern Illinois. Circular 502. Illinois State Geological Survey
Willman, Harold Bowen, Reynolds, Robert Ramon (1947) Geological structure of the zinc-lead district of northwestern Illinois. Report of Investigations 124. Illinois State Geological Survey
Frye, John Chapman, Glass, Herbert David, Willman, Harold Bowen (1968) Mineral zonation of Woodfordian loesses of Illinois. Circular 427. Illinois State Geological Survey
Frye, John Chapman, Willman, Harold Bowen, Glass, Herbert David (1964) Cretaceous deposits and the Illinoian glacial boundary in western Illinois. Circular 364. Illinois State Geological Survey
Willman, Harold Bowen (1943) High-purity dolomite in Illinois. Report of Investigations 90. Illinois State Geological Survey
Lamar, John Everts, Willman, Harold Bowen (1955) Illinois building stones. Report of Investigations 184. Illinois State Geological Survey
Willman, Harold Bowen (1942) Feldspar in Illinois sands, a study of resources. Report of Investigations 79. Illinois State Geological Survey
Willman, Harold Bowen, Reynolds, Robert Ramon, Herbert, Paul (1946) Geological aspects of prospecting and areas for prospecting in the zinc-lead district of northwestern Illinois. Report of Investigations 116. Illinois State Geological Survey
Collinson, Charles William, Swann, David Henry, Willman, Harold Bowen (1954) Guide to the structure and paleozoic stratigraphy along the Lincoln fold in western Illinois. Guidebook Series 3. Illinois State Geological Survey
Lamar, John Everts, Willman, Harold Bowen, Fryling, Charles Frederick, Voskuil, Walter Henry (1934) Rock wool from Illinois mineral resources. Bulletin 61. Illinois State Geological Survey
 
and/or  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are Β© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 9, 2025 05:29:22
Go to top of page