File:Snowflake obsidian - Utah.jpg
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Summary
| Description |
English: A brief increase of iron in the magma added pink to a perthite layer as these spheroids from northeast of Milford Utah testify. They then evolved into "snowflake obsidian." |
| Date | |
| Source | Own work |
| Author | DaveC1 |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:34, 27 December 2020 | | 600 × 438 (37 KB) | DaveC1 | Uploaded own work with UploadWizard |
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