File:Mookaite (Windalia Radiolarite Formation, Lower Cretaceous; Western Australia) 21 (48785590156).jpg
_21_(48785590156).jpg){kind=small}
Size of this preview: 800 × 565 pixels. Other resolutions: 320 × 226 pixels | 640 × 452 pixels | 1,024 × 723 pixels | 1,280 × 904 pixels | 2,560 × 1,807 pixels | 3,279 × 2,315 pixels.
Original file (3,279 × 2,315 pixels, file size: 5.03 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
Mookaite from the Cretaceous of Western Australia. (~13.7 centimeters across at its widest along the base) Mookaite is a silicified sedimentary rock from the Lower Cretaceous Windalia Radiolarite Formation, a succession of moderately deep marine siltstones and cherts that contain numerous microfossils of foraminifera, radiolarians, and coccoliths. Because this rock is hard, very fine-grained, and attractively colored, mookaite is valued as knapping material by flintknappers. The yellowish and reddish colors are from iron oxide impurities (limonite and hematite). |
| Date | |
| Source | Mookaite (Windalia Radiolarite Formation, Lower Cretaceous; Western Australia) 21 |
| Author | James St. John |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48785590156 (archive). It was reviewed on 28 November 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:06, 28 November 2019 | | 3,279 × 2,315 (5.03 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
File usage
The following page uses this file:
_21_(48785590156).jpg){kind=link}