File:Mookaite (Windalia Radiolarite Formation, Lower Cretaceous; Western Australia).jpg
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Original file (3,315 × 2,346 pixels, file size: 3.24 MB, MIME type: image/jpeg)
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Summary
| Description |
English: Mookaite from the Lower Cretaceous of Western Australia. (~13.3 centimeters across at its widest)
Mookaite is a silicified sedimentary rock from the 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. |
| Date | |
| Source | Own work |
| Author | James St. John |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 07:26, 29 December 2018 | | 3,315 × 2,346 (3.24 MB) | commons>Jsj1771 | User created page with UploadWizard |
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