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wall rock |
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wall rock [′wȯl ¦räk] (geology) Rock that encloses a vein. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Veins are composed of predominantly quartz-adularia-calcite and altered breccia fragments of volcanic wall rocks. Trenching and drilling will be required to substantiate silver and gold mineralization in the wall rocks and to locate other veins. The limonitic clay-rich hanging-wall veins and white clay-sercite-pyrite bearing wall rocks did not contain significant gold values. |
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