The laboratory albitization of mid-ocean ridge basalt
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Abstract
Complete alteration of fresh mid-ocean ridge basalt to albite + actinolite + smectite took place in the presence of quartz and 3.4m NaCl at 350°C and 400 bars. Significant Na-metasomatism occurred in exchange for Ca + Fe + Mn. In contrast, alteration of the basalt/quartz mixture with a synthetically prepared "natural brine," and basalt with 3.4m NaCl or "natural brine" did not produce significant albitization. Based on these and previous experiments that reacted basalt with a variety of fluids, it is concluded that excess silica, a high Na/Ca ratio, and an absence of strong acidity (dissolved Mg) in the altering fluid are important for the albitization of basalt.
Suggested Citation
Rosenbauer, R.J., Bischoff, J.L., Zierenberg, R.A., 1988, The laboratory albitization of mid-ocean ridge basalt: Journal of Geology, v. 96, no. 2, p. 237-244, https://doi.org/10.1086/629213.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The laboratory albitization of mid-ocean ridge basalt |
| Series title | Journal of Geology |
| DOI | 10.1086/629213 |
| Volume | 96 |
| Issue | 2 |
| Year Published | 1988 |
| Language | English |
| Publisher | University of Chicago Press |
| Contributing office(s) | Pacific Coastal and Marine Science Center |
| Description | 8 p. |
| First page | 237 |
| Last page | 244 |