Mining Deposits in the Subsurface Environments Flashcards
The sequence of the deposition or the sequence in which the minerals are formed in an ore deposit
Paragenesis
The general sequence of deposition
Gangue Minerals (Silicates/ Carbonates) Oxides Sulfides & Arsenides of Fe/Ni/Co/Mo Sulfides of Zn/Pb/Ag/Fe-Cu Co/Pb/Ag Sulfosalts Native Metals/Tellurides/Stibnite/Cinnabar
(a) is an uncommon telluride of gold in which (b) Gold are approximately replaced by silver. It was first discovered in (c) in 1861.
Calaverite
3%
Calaveras County
Metalloid Elements
B Si Ge As Sb Te Po At
is a solid material that is typically hard, opaque, shiny, and features good electrical and thermal conductivity
Metal
10 characteristics of Metals
Solid Hard Metallic Luster Malleable Ductile High Melting and Boiling point Good conductor of heat and electricity Sonorus
Metals are solid except
Hg
Metals are hard except
Li, Na, K
Metals that have a low melting point
Ga, Cs
Metals that are poor conductor of heat
Pb, Hg
metals that are best conductor of electricity
Ag, Cu
Metals are broadly classified as
Ferrous
Non-ferrous
is any metal, including alloys that does not contain iron in appreciable amounts
Non-ferrous metal
are metals that include steel and pig iron and alloys of iron with other metals
Ferrous metals
Non-ferrous metal
Al Cu Pb Ti Sn Ni
Precious metals
Ag
Au
Pt
Exotic or rare metals
Co Hg W Be Bi Ce
are solids and gases are not good conductors of heat and electricity. These are chemical elements that form negative ions, have acidic oxides, and ore generally poor conductors of heat and electricity
Non-metals
Characteristics of non-metals
Soft No luster Not malleable Low melting and boiling point Bad conductor of heat and electricity Not sonorus
Associated with Silicates and concentrated in the crust
Lithophile
Associated with Sulfides
Chalcophile
Subdivision of Ideal Chemical Formula
Native Elements Halides Sulfides & Sulfosalts Oxides & Hydroxides Oxysalts (Carbonates, Phosphates, Tungstates, Sulfates) Silicates
