sulphide
Sulfur's negative ion
A sulphide is a chemical compound containing sulphur bonded to a metal or other element.
Hydrogen sulphide gives rotten eggs their smell.
Metal sulphides occur naturally as ores—iron pyrite, lead galena, zinc blende.
The spelling sulfide dominates in American English and international scientific usage.
Brass-yellow iron sulfide
- galenaSulfide ore of lead
- cinnabarRed mercuric sulfide ore
- marcasitePale bronze iron sulfide
- argentiteSilver sulfide ore
fool's gold · crystal · specimen · luster · streak · hardness
Place for safekeeping
- veinVessel toward heart
- lodeMineral-rich rock seam
- hydrothermalHot water underground
- mineralizationConversion to mineral form
stratiform · porphyry · geode · ore · alteration · disseminated · replacement · metamorphic
Decomposed poultry products
- pungentSharply strong-smelling
- stenchPowerfully offensive odor
- sewer gasFumes from waste pipes
- volcanic gasAirborne emissions from eruptions
fumarole · hot spring · decay · putrefaction · anaerobic · swamp gas · malodorous · noxious
Negatively charged ion
- valenceCombining power measure
- electronsNegative charges in atoms
- covalentSharing electrons between atoms
- bondingForming close connections
ionic · molecule · synthesis · precipitate · insoluble · oxidation · reduction · formula
Extracting metal from ore
- flotationAbility to stay afloat
- roastingCooking with dry heat
- leachingDissolving out by liquid
- refiningRemoving unwanted elements
metallurgy · concentrate · slag · sintering · tailings · milling · crushing · separation
Capable of causing harm
- poisonousCapable of causing death
- corrosiveDestroys by chemical action
- flammableProne to ignition
- exposureState of being unprotected
ventilation · environmental · contamination · remediation · oxidation · weathering · pollution · safety
pyrite
Brass-yellow iron sulfide
argentite · fool's gold · crystal · specimen · luster · streak · hardness
deposit
Place for safekeeping
- veinVessel toward heart
- lodeMineral-rich rock seam
- hydrothermalHot water underground
mineralization · stratiform · porphyry · geode · ore · alteration · disseminated · replacement · metamorphic · magmatic
rotten eggs
Decomposed poultry products
volcanic gas · fumarole · hot spring · decay · putrefaction · anaerobic · swamp gas · malodorous · noxious
anion
Negatively charged ion
- valenceCombining power measure
- electronsNegative charges in atoms
- covalentSharing electrons between atoms
bonding · ionic · molecule · synthesis · precipitate · insoluble · oxidation · reduction · formula · reagent
smelting
Extracting metal from ore
refining · metallurgy · concentrate · slag · sintering · tailings · milling · crushing · separation · recovery
toxic
Capable of causing harm
exposure · ventilation · environmental · contamination · remediation · oxidation · weathering · pollution · safety