Mining Flashcards

1
Q

what is ore?

A

material that can be mined, processed and sold at profit

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2
Q

BCM

A

bank cubic metre - measure of volume of material

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3
Q

swell factor

A

when blasted the material swells and the density drops to loose or broken density

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4
Q

dilution

A

tonnes of waste material unavoidably mined together with the ore and sent to the processing plant

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5
Q

selectivity

A

ability to mine to precise geological boundaries

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6
Q

mining recovery

A

percentage of ore that is sent to the processing plant

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7
Q

processing recovery

A

percentage of the commodity that is extracted from the ore

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8
Q

ore mineral

A

mineral from which the valuable component will be derived

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9
Q

grade

A

proportion of the ore that is actual metal content that can be extracted

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10
Q

strain

A

deformation of material, amount of deformation an object experiences compared to its original size and shape

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11
Q

elastic deformation

A

perfectly elastic when straining or unstraining takes place once the load is applied or removed

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12
Q

brittle/ductile

A

rupture when the continuity of the deformation is lost
plastic is irreversible
brittle: recording the brittle elastic failure of rocks
ductile: preserving the permanent visco-plastic deformation

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13
Q

fault

A

planar fracture or discontinuity in a volume of rock

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14
Q

joint

A

fracture in rock where the displacement associated with the opening of the fracture is greater than the displacement due to lateral movement

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15
Q

transform boundaries

A

2 plates sliding past each other

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16
Q

divergent boundaries

A

2 plates pulling away from each other-rifts ocean openings

17
Q

convergent boundaries

A

2 plates moving together

subduction zone: one moving under another