英语地质翻译

Question

1. Silver is present as native silver, both intergrown with sulphides or as free grains.（as free grains求解）
2. A block cut-off grade of 1.00% Cu and a wall cut-off grade of 0.70% Cu were used for ore reserve calculations.（A block cut-off grade / A wall cut-off grade求解）
3. The lower grade Footwall Section is always confined to Zone MO3, and has as its footwall limit the very regular MO3-O4 lithological contact. The hangingwall limit is based solely on grade. Waste partings between the Main and Footwall section are confined to the lateral margins and to the deeper portions of the orebody.
The southern margin of the orebody corresponds with the Footwall Quartzite Marker (MO3-MO4 contact) while the northern margin is based on an assay cut-off within zone MO2.

Answer 1

1。银是目前作为自然银，两者共生与硫化物或免费谷物（如自由grains求解）。2。一块边界品位1%的铜和0.70%铜壁截止品位用于矿石储量计算。（一块边界品位/墙防渗grade求解）3。低年级下盘部分始终是局限于区域，并作为其下盘限制规则mo3-o4岩性接触。上盘的限制是完全基于等级。废物分离之间的主要和下盘部分局限于侧缘和更深的部分矿体。南缘，矿体下盘石英岩与对应的标记（mo3-mo4接触）而北部边缘是根据法截止区内模型。