Economic Geology & Mineralogy Hub
Ore Minerals: The Economic Building Blocks of Global Mining
Ore minerals are naturally occurring metalliferous phases—primarily sulfides, oxides, carbonates, and silicates—from which base metals (Cu, Zn, Pb), ferrous alloys (Fe, Mo, Ni), precious metals (Au, Ag), and critical high-technology elements (In, Ge, Ga, Re) are economically extracted. Explore our comprehensive mineralogical guides covering crystallography, reflected-light microscopy, deposit paragenesis, and field identification.
1. Comprehensive Ore Mineral Guides
2. Master Comparison Table of Economic Ore Minerals
In mineral exploration and feasibility modeling, understanding the stoichiometric metal content, specific gravity contrast, and trace-metal byproduct credits of individual ore minerals is essential for resource estimation and metallurgical circuit design:
| Ore Mineral | Formula & Class | Max Metal wt% | Byproduct Credits | Primary Deposit Types |
|---|---|---|---|---|
| Chalcopyrite | CuFeS₂ (Sulfide) | 34.6% Cu | Au, Ag, Se, Te | Porphyry Cu, VMS, IOCG, Skarn |
| Bornite | Cu₅FeS₄ (Sulfide) | 63.3% Cu | Au, Ag, Bi | Potassic Porphyry Cores, IOCG, Sediment-Hosted Cu |
| Sphalerite | ZnS (Sulfide) | 67.1% Zn | In, Ge, Ga, Cd | SEDEX, VMS, MVT, Polymetallic Veins |
| Galena | PbS (Sulfide) | 86.6% Pb | Ag, Bi, Sb, Te | SEDEX, MVT, VMS, CRD/Skarn |
| Molybdenite | MoS₂ (Sulfide) | 59.9% Mo | Re (Rhenium) | Porphyry Cu-Mo, Climax Porphyry Mo, W-Mo Skarn |
| Willemite | Zn₂SiO₄ (Silicate) | 58.7% Zn | Ge, Pb | Hypogene Non-Sulfide Zn (Vazante), Metamorphic Zn |
| Smithsonite | ZnCO₃ (Carbonate) | 52.1% Zn | Cd, Co, Cu | Supergene “Calamine” Oxidation Blankets |
3. Vertical Paragenesis: Hypogene vs. Supergene Ore Mineral Zoning
When tectonic uplift exposes primary hydrothermal sulfide orebodies to oxygenated meteoric groundwater, chemical weathering redistributes metals into a predictable vertical mineralogical profile:
[ SURFACE GOSSAN / LEACHED CAP ]
Insoluble Iron Oxides (Goethite, Hematite, Jarosite) + Residual Gold + Immobile Molybdate
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[ OXIDIZED SUPERGENE ZONE (Above Water Table) ]
• Copper Carbonates/Silicates: Malachite, Azurite, Chrysocolla
• Non-Sulfide Zinc ("Calamine"): Smithsonite (ZnCO₃), Hemimorphite, Willemite (Zn₂SiO₄)
• Insoluble Lead Armoring: Anglesite (PbSO₄), Cerussite (PbCO₃)
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══════════════════════════ GROUNDWATER TABLE (REDOX FRONT) ══════════════════════════
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[ SUPERGENE SULFIDE ENRICHMENT BLANKET ]
Secondary Copper Sulfides: Chalcocite (Cu₂S, 79.8% Cu) & Covellite (CuS) replacing Pyrite/Chalcopyrite
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[ PRIMARY HYPOGENE SULFIDE CORE (Unweathered Depth) ]
Chalcopyrite (CuFeS₂) + Bornite (Cu₅FeS₄) + Sphalerite (ZnS) + Galena (PbS) + Molybdenite (MoS₂)