| Abstract: | This descriptive paper identifies three widely occurring textures designated as ‘watermelon‘, ‘dusting‘ and ‘bimodal‘ that characterize the replacement of original Fe-bearing sphalerite by an aggregate of chalcopyrite and low-Fe sphalerite as an integral part of the mineralization process. Replacement probably predominates over alternative modes of origin for small chalcopyrite blebs in sphalerite from most vein and sea-floor massive sulphide deposits that formed in the 200-400oC temperature range and that have not been subsequently subjected to higher T. Sphalerite from the epithermal Ag-Pb-Zn deposit at Creede, Colorado, displays a rich variety of features ("bead chains‘) that are primary crystal dislocations decorated by exsolved chalcopyrite.-J.A.Z. |
| Genre: | Article |
| ProdID: | 70014184 |
| Citation Author: | Barton, Jr, P. B.; Bethke, P. M. |
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| Citation End Page: | 467 |
| Citation Issue: | 5-6 |
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| Citation Language: | English |
| Citation Larger Work Title: | American Mineralogist |
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| Citation Number Of Pages: | 17 |
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| Citation Search Results Text: | Chalcopyrite disease in sphalerite: pathology and epidemiology.; 1987; Article; Journal; American Mineralogist; Barton, Jr, P. B.; Bethke, P. M. |
| Citation Start Page: | 451 |
| Citation Volume: | 72 |
| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | Chalcopyrite disease in sphalerite: pathology and epidemiology.; 1987; Article; Journal; American Mineralogist; Barton, Jr, P. B.; Bethke, P. M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1987 00:00 -0600 |
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