Important sulfides
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Sulfide Minerals
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Here you will find a short summary of the sulfides that you are studying in lab
Important Sulfide Minerals
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Pyrite
Aresonopyrite
Sphalerite
Chalcopyrite
Covellite
Galena
Pyrrhotite
FeS2
FeAsS
ZnS
CuFeS2
Cinnabar
Molybdenite
Enargite
Oriment
Stibnite
HgS
MoS
PbS
Fe1-xS
Important Sulfide Minerals
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Sulfide minerals have a restricted composition range and solid solutions are
rare
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Most sulfides (except sphalerite) are opaque semiconductors with metallic
luster
Sulfide parageneses
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Most sulfides are deposited by hydrothermal solutions (e.g., galena, sphalerite,
chalcopyrite). Metal cations are transported by cl-1 complexes at high
temperature.
Sulfide parageneses
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Some are primary minerals in igneous and metamorphic rocks (e.g.,
Molybdenite, pyrrhotite) and crystallize from the magma.
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Sulfides also may form, in sediments under the reducing conditions resulting
from decay of organic matter.
Hydrotherma Vein Deposits
hypothermal
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300-600 C
Molybdenite
Pyrrhotite
Chalcopyrite
Quartz
Tourmaline
Topaz
Micas
Mesothermal
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200-300 C
Sulfide Ore Mineals
Chalcopyrite
Borninte
Galena
sphalerite
Arsenopyrite
Gangue Mineals
Quartz
Carbonates
Barite
Epithermal
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50-200 C
Cinnabar
Stibinte
Quartz
Chalcedony
Opal
Calicte
Pyrite
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Cubic
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Most widespread sulfide mineral. Found in all geological environments
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Marcasite is a related polymorph formed at low Temperature.
Pyrrhotite
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Found as accessory phase in igneous rocks.
Chalcopyrte
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Primary copper mineral,in porphyry-copper deposits.
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Most widespread copper mineral
Arsenopyrite
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Primary arsenic mineral
Molybdenite
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Primary Molybdenum ore
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High temperature deposite
Sphalerite
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Primary ore mineral for Zn
Galena
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Primary ore mineral for Pb
