marginal deposit

The mother rocks of copper deposit in Sanchakou are quartz diorite ( porphyrite) and quartz-mica-diorite-porphyrite of marginal facies from quartz-diorite and diorite rock body of middle Hercynian.

三岔口铜矿含矿主岩为海西中期石英闪长岩&闪长岩体边缘相石类闪长（玢）岩和英云闪长斑岩。

Debris flow deposit This formation is dominated by a set of sandstone-mudstone dark clastic rock series which belongs to marginal marine deposit at the end of the Gondwana Carboniferous-Permian glacier period.

该组主要为一套砂岩－泥岩的暗色碎屑岩系，属冈瓦纳石炭－二叠纪冰川末期的边缘海沉积。

They are respectively named cut-off grade, marginal grade, economic grade and the average grade of an ore deposit.

这4项品位指标依次为边界品位、边际品位、经济品位和矿床平均品位。

Based on this model, we only need to know the deposit scale of the bank can count some important informa-tion such as the average cost, the total cost and the marginal cost of the deposit.

通过该模型，只需了解某银行的存款规模便可以测算出该行存款的单位平均成本、总成本和边际成本等重要信息。