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Surface textures and other features of diamonds
The results of the study of more than 11 000 diamonds, from thirty kimberlite and placer deposit localities, are reported. Forty-one pristine surface textures are distinguished, including twelve which are described for the first time. Only two surface textures are ascribed to crystal growth. The oth...
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| Format: | Thesis |
| Language: | English |
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Department of Geological Sciences
2017
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| _version_ | 1867613308644753408 |
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| access_status_str | Open Access |
| author | Robinson, Derek Nigel |
| author_browse | Robinson, Derek Nigel |
| author_facet | Robinson, Derek Nigel |
| author_sort | Robinson, Derek Nigel |
| collection | Thesis |
| description | The results of the study of more than 11 000 diamonds, from thirty kimberlite and placer deposit localities, are reported. Forty-one pristine surface textures are distinguished, including twelve which are described for the first time. Only two surface textures are ascribed to crystal growth. The others are considered to result from crystal resorption and etching although internal features, such as growth stratification and dislocation planes, are expressed in some cases. The results of etching experiments on diamond are reviewed. Oxidation is considered to be responsible for most of the resorption and etching of diamonds in nature and neither pure graphitization nor dissolution appears to be important. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/23490 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:03.682Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Department of Geological Sciences |
| publisherStr | Department of Geological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/23490 Surface textures and other features of diamonds Robinson, Derek Nigel Geology The results of the study of more than 11 000 diamonds, from thirty kimberlite and placer deposit localities, are reported. Forty-one pristine surface textures are distinguished, including twelve which are described for the first time. Only two surface textures are ascribed to crystal growth. The others are considered to result from crystal resorption and etching although internal features, such as growth stratification and dislocation planes, are expressed in some cases. The results of etching experiments on diamond are reviewed. Oxidation is considered to be responsible for most of the resorption and etching of diamonds in nature and neither pure graphitization nor dissolution appears to be important. 2017-01-26T14:10:46Z 2017-01-26T14:10:46Z 1979 2016-11-22T10:43:39Z Thesis http://hdl.handle.net/11427/23490 eng application/pdf application/pdf Department of Geological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Geology Robinson, Derek Nigel Surface textures and other features of diamonds |
| title | Surface textures and other features of diamonds |
| title_full | Surface textures and other features of diamonds |
| title_fullStr | Surface textures and other features of diamonds |
| title_full_unstemmed | Surface textures and other features of diamonds |
| title_short | Surface textures and other features of diamonds |
| title_sort | surface textures and other features of diamonds |
| topic | Geology |
| url | http://hdl.handle.net/11427/23490 |
| work_keys_str_mv | AT robinsondereknigel surfacetexturesandotherfeaturesofdiamonds |