79 Au 196.967

Gold

transition metal · Group 11 · Period 6

1 section(s) thin

Atomic properties

Atomic number
79
Z
Atomic weight
196.967[1]
g/mol
Density
19.3 g/cm³
at STP
Melting point
1064.18 °C
at 1 atm
Boiling point
2856 °C
at 1 atm
Crystal structure
FCC
Electron config.
[Xe] 4f¹⁴ 5d¹⁰ 6s¹
Oxidation states
+1, +3
most common

Market data

Spot price
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Raw material sources & pricing

Raw Material FormGrade/QualityPrice Paid by RefinersMajor SourcesNotes
High-Grade Underground Ore5-30 g/t Au$800-2,500/MTSouth Africa, Canada, AustraliaDeep mines, high extraction cost
Low-Grade Open Pit Ore0.5-3 g/t Au$150-600/MTNevada, Peru, IndonesiaLarge volume, heap leaching
Refractory Ore2-8 g/t Au$400-1,200/MTNevada, China, RussiaRequires roasting/pressure oxidation
Placer/Alluvial Gold0.1-2 g/m³$50-300/m³Alaska, Brazil, GhanaSimple gravity separation
Gold Concentrate30-200 g/t Au$2,000-15,000/MTVarious mines globallyFrom flotation processing
E-Waste/Secondary200-400 g/t Au$500-2,000/MTJapan, Belgium, SwitzerlandCircuit boards, connectors
Gold Ore - Primary Raw Material

Current Market Price: $150-2,500/MT (varies dramatically by ore grade) Major Global Reserves: Australia: 11,000 MT (20% of world reserves) - Large open-pit operations Russia: 6,800 MT - Siberian deposits United States: 3,000 MT - Nevada, Alaska South Africa: 5,000 MT - Deep underground mines Peru: 2,800 MT - Yanacocha, Las Bambas Canada: 2,400 MT - Ontario, Quebec mines 2025 Production Leaders: China: 370 MT (11% of global production) Australia: 315 MT Russia: 305 MT United States: 170 MT Canada: 195 MT Ghana: 155 MT Raw Material Form Grade/Quality Price Paid by Refiners Major Sources Notes High-Grade Underground Ore 5-30 g/t Au $800-2,500/MT South Africa, Canada, Australia Deep mines, high extraction cost Low-Grade Open Pit Ore 0.5-3 g/t Au $150-600/MT Nevada, Peru, Indonesia Large volume

⚠️ Seawater Gold Extraction

Commercial Viability: NOT ECONOMICALLY VIABLE Concentration: 0.004-0.044 ppb (parts per billion) Chemical Form: AuCl₄⁻ (gold chloride complex) and Au(OH)₃⁰ Total Ocean Gold: ~20 million tons dissolved in all oceans Status: No commercial seawater gold extraction exists. The energy cost to extract 1 gram would exceed $50,000, while gold value is only ~$80/gram. Fritz Haber's 1920s attempts failed economically. Note: Requires processing 30 million liters of seawater to obtain 1 gram of gold.

Production cost analysis

Cost Component$/oz Gold% of Total CostNotes
Mining (Ore Extraction)$400-60035-40%Drilling, blasting, hauling
Processing (Mill/Leach)$250-40020-25%Crushing, grinding, cyanidation
Energy$150-25012-15%Electricity, diesel fuel
Labor$180-30015-18%Varies by country
Consumables & Reagents$100-1508-10%Cyanide, lime, grinding media
G&A and Other$120-20010-12%Administration, royalties
Total Production Cost (AISC)$1,200-1,900100%Compare to gold price: ~$2,400/oz

Energy consumption breakdown

Process StageEnergy Consumption% of Total EnergyEnergy TypeKey Operations
Mining (Open Pit/Underground)10-15 GJ/kg Au40-45%Diesel, ElectricityDrilling, blasting, hauling, ventilation
Comminution (Crushing/Grinding)8-12 GJ/kg Au30-35%ElectricitySize reduction to 75-150 μm
Processing (Leaching/CIP)4-6 GJ/kg Au15-20%Electricity, Compressed AirCyanidation, carbon adsorption
Refining2-3 GJ/kg Au8-10%Electricity, Natural GasElectrowinning, smelting to 99.99%
Extraction Process Energy Details

Heap Leaching: 5-10 GJ/kg Au - Low-grade ores Tank Leaching/CIP: 15-25 GJ/kg Au - Higher grade ores Pressure Oxidation: 25-35 GJ/kg Au - Refractory ores Bio-oxidation: 20-30 GJ/kg Au - Sulfide ores Gravity Separation: 2-5 GJ/kg Au - Placer/free gold

Energy Intensity by Ore Grade

>10 g/t ore: 15-20 GJ/kg Au produced 5-10 g/t ore: 20-30 GJ/kg Au produced 2-5 g/t ore: 25-35 GJ/kg Au produced 1-2 g/t ore: 30-45 GJ/kg Au produced 40-80 GJ/kg Au produced

Commercial forms & specifications

Product FormChemical FormulaMolecular WeightTypical PurityPrice Range (USD)Main Applications
Gold Bullion Bars (1 kg)Au196.97 g/mol99.99%$78,000-80,000/barInvestment, central banks
Gold Grain/ShotAu196.97 g/mol99.99%$79-81/gJewelry manufacturing, alloying
Gold WireAu196.97 g/mol99.99%$85-95/gElectronics, bonding wire
Gold Leaf/FoilAu196.97 g/mol99.9%$1.50-3.00/sheetDecoration, gilding
Gold Sputtering TargetAu196.97 g/mol99.999%$90-120/gSemiconductor, coating
Gold Nanoparticles (20nm)Au196.97 g/mol99.9%$500-5,000/gMedical, catalysis, sensors
Gold Powder (1-10 μm)Au196.97 g/mol99.9-99.99%$100-200/gElectronics paste, catalysts
Gold ChlorideHAuCl₄·4H₂O411.85 g/mol99.9%$120-180/gElectroplating, catalysis
Gold Potassium CyanideKAu(CN)₂288.10 g/mol68.3% Au$90-110/g AuElectroplating
Gold Sulfite ComplexNa₃Au(SO₃)₂490.15 g/mol40.2% Au$95-115/g AuNon-cyanide plating
Colloidal Gold (Medical)Au196.97 g/mol99.9%$1,000-10,000/gDiagnostics, therapeutics

Moles per kilogram

Product FormFormulaMW (g/mol)Moles/kg
Gold MetalAu196.975.08
Gold(III) ChlorideAuCl₃303.333.30
Chloroauric AcidHAuCl₄·4H₂O411.852.43
Gold Potassium CyanideKAu(CN)₂288.103.47
Gold Sodium SulfiteNa₃Au(SO₃)₂490.152.04

References

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Coverage notes

The following sections are thin or absent in the source document for this element. They will be filled by enrichment passes (NIST atomic, OSHA/NIOSH safety, USGS / IAI environmental).