File:Greenish clay coating calcite in fine-grained limestone (Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 1 (48888501108).jpg
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| Description |
Micritic limestone with mineralization in the Devonian of Ohio, USA. This is part of a large, loose block in an active quarry in far-northwestern Ohio. It appears to be from the Dundee Limestone, a Middle Devonian unit equivalent to the upper Columbus Limestone and Delaware Limestone elsewhere in Ohio. At this site, the Dundee is principally light gray to gray-brown micrite and dismicrite. These lithologies are sometimes referred to as lithographic limestone and sublithographic limestone. Stylolites are present, as are numerous patches of coarsely-crystalline calcite. In this case, the calcite patches are mostly coated by / mixed with a greenish material - possibly glauconitic clay. A thesis has misidentified this mineralization as green fluorite. Purple fluorite is present at this quarry, plus sphalerite, pyrite, and quartz. Stratigraphy: likely derived from the Dundee Limestone, Middle Devonian Locality: Auglaize Quarry (= Shelly Company, Stoneco's Auglaize Facility), southeast of the town of Junction, northeastern Paulding County, northwestern Ohio, USA (41° 10' 27.83" North latitude, 84° 25' 19.75" West longitude) |
| Date | |
| Source | Greenish clay coating calcite in fine-grained limestone (Middle Devonian; Auglaize Quarry, near Junction, Ohio, USA) 1 |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48888501108 (archive). It was reviewed on 18 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:52, 18 October 2019 | | 4,000 × 3,000 (6.5 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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