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Mineral Materials > exam 1 > Flashcards

exam 1 Flashcards

1
Q

ore body

A

mass of rock from which ore might be extracted, suggests for profit

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2
Q

reserve

A

ore that may be extracted for a profit

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3
Q

grade

A

amount of given metal in a rock; usually a percentage

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4
Q

tonnage

A

volume of min. material

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5
Q

laterites

A

result of weathering, usually occur near equator

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5
Q

in situ ore

A

chemically processed in place

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6
Q

variables that might affect value of min. ore

A

extraction $$$, pureness of ore, dangerous enviro hazards, political issues, supply/demand

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7
Q

ore dep. variables

A

depth, erosion, age, formation, preservation

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8
Q

transporting agents:

A

water, melts, gas, mass flow

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8
Q

sources of metals:

A

mantle, water, magma, country rock

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9
Q

drives for mass transport

A

density, pH sediment size, topography, evaporation

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10
Q

magmatic ore deps SOURCES

A

start w/ specialized magma comps, metals originally contained in magma

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11
Q

what might cause a metal to come out of a solution?

A

dissolution, oversaturation, p/t change

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12
Q

magmatic ore deposit

A

fundamentally magmatic, metals/mins xtallize from melt

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13
Q

magmatic ore deps- PATHWAYS

A

moved in melts

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14
Q

magmatic ore dep traps

A

fractional xtallization, MM, assimilation

15
Q

Hydrothermal deposits

A

hot fluid moving thru rock

15
Q

metasomatism

A

can involve the intro/removal of chem components, has comp change

15
Q

ligand

A

chem components that bond w metals and help transport

16
Q

metamorphism

A

no compositional change

17
Q

hydrotherm deposit PATHWAYS

A

rocks decrease in permeability/porosity w depth

18
Q

hydrotherm deposit TRAP

A

many different traps/sinks because of precipitation

18
Q

chemical sedimentary deposits

A

precipitate from fluid, applies to many different metals/materials

19
Q

weathering/erosion related deposits

A

mobilization of metals during weathering/re-precipitation

20
Q

sulfur solubility

A

whether or not S will disolve into a melt (depends on Fe)

21
Q

sulfur fugacity

A

willingness to form minerals in a sulfidation state

22
Q

sulfide stability

A

low temp- wide variety of fe, ni sulfides

23
Q

metal partitioning - liquid immiscibility

A

2+ melts form

24
Q

PGE

A

platinum group elements

25
Q

magmatic ore deposit SOURCE

A

mafic/UM melts

26
Q

magmatic ore deposit PW

A

M/UM melt

27
Q

magmatic ore deposit TRAP

A

liquid imm./magma mixing/cooling

28
Q

layered mafic intrusions

A

can be oxide or sulfide dominated, mafic, sheet like units

29
Q

gangue minerals

A

waste rock

30
Q
A
31
Q
A
32
Q
A
33
Q
A
34
Q
A

Mineral Materials (1 decks)

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