File:Framesite diamondite (South Africa) 4 (49169490423).jpg
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Summary[edit]
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| Description |
(65.63 carats; ~2.3 centimeters across at its widest) Diamondites are very rare, monomineralic diamond rocks. "Diamond" is the name of a mineral and gemstone. "Diamondite" is a rock name. Several named varieties of diamondites exist, based on physical characteristics - for example, carbonado, framesite, stewardite, and yakutite. Seen here is a large framesite diamondite from South Africa. The specific provenance has not been preserved, but according to the published literature, framesite is often produced from the Premier Mine and the Venetia Mine in South Africa (Heaney et al., 2005). Framesite is a granular, crystalline-textured diamondite. Unlike carbonado diamondites (see elsewhere in this photo album), framesite is not cryptocrystalline - the crystals here are much larger. The rock has a mix of large and small crystals (this would be called porphyritic in a granite). Locality: unrecorded/undisclosed mine in South Africa. Some framesite references: Kurat & Dobosi (2000) - Garnet and diopside-bearing diamondites (framesites). Mineralogy and Petrology 69: 143-159. Heaney et al. (2005) - Strange diamonds: the mysterious origins of carbonado and framesite. Elements 1: 85-89. Tappert & Tappert (2011) - Chapter 2: the morphology of diamonds. pp. 15-42 in Diamonds in Nature: a Guide to Rough Diamonds. |
| Date | |
| Source | Framesite diamondite (South Africa) 4 |
| Author | James St. John |
Licensing[edit]
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49169490423 (archive). It was reviewed on 5 December 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 | 01:36, 5 December 2019 | | 1,414 × 1,375 (1.39 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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