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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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| Historical exploration for primary sources from adits yielded a series of encouraging grades: approximately 50,000 tonnes yielded an average of 6 g/t Au both in wall rock schist and quartz veins; quartz veins yielded 4 to 12 g/t Au; and 20 tonnes of crushed quartz vein material yielded 34. There is some indication that the wall rock on either side of the quartz vein may also contain lower grade silver mineralization. Gold is visible opt across lower 10cm and into wall rock. |
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