Chalcopyrite disease in sphalerite: pathology and epidemiology.
American Mineralogist
By: P. B. Barton Jr. and P. M. Bethke
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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.
Suggested Citation
Barton, P.B., Bethke, P.M., 1987, Chalcopyrite disease in sphalerite: pathology and epidemiology.: American Mineralogist, v. 72, no. 5-6, p. 451-467.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Chalcopyrite disease in sphalerite: pathology and epidemiology. |
| Series title | American Mineralogist |
| Volume | 72 |
| Issue | 5-6 |
| Year Published | 1987 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | American Mineralogist |
| First page | 451 |
| Last page | 467 |