| 1 | There are many similarities between Yuerya and Niuxinshan independent porphyry deposits. | |
| 2 | Silurian -Devonian island-arc volcanic formation may be hosted in rock full of porphyry copper deposits. | |
| 3 | A porphyry copper deposit forms when crystal-rich magma moves upwards through pre-existing rock layers. | |
| 4 | The granite and porphyry monuments of Egypt exert an incredible sway over our feelings. | |
| 5 | While the mines appear to be close to each other, each exploits a separate porphyry copper deposit. |
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