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Send EmailGarnet, Garnet Sand, Almandine Garnet, GMA Garnet, Garnet Abrasive, 1302-62-1
🧪 Garnet – Chemical and Physical Profile
| Property | Details |
|---|---|
| CAS Number | 1302-62-1 (Almandine Garnet) |
| EC Number | 215-114-8 (Almandine variant) |
| Chemical Formula | Fe₃Al₂(SiO₄)₃ (varies by subtype: Almandine, Andradite, etc.) |
| Mineral Group | Nesosilicate |
| Crystal System | Cubic (isometric) |
| Hardness | Mohs: 6.5–7.5 / HRC: 40–60 (GP vs GL grades) |
| Density | 3.5–4.3 g/cm³ |
| Melting Point | Approx. 1300 °C |
| Color Variants | Red, brown, green, black, pink |
| Grain Sizes | Mesh 12/20 → 0.50–1.20 mm<br>Mesh 30/60 → 0.20–0.60 mm<br>Mesh 240 → 0.045–0.10 mm |
| Chemical Composition | SiO₂ 35%, Fe₂O₃ 33%, Al₂O₃ 23%, MgO 7%, MnO 1%, CaO 1% |
| Other Names | Garnet Sand, Almandine Garnet, GMA Garnet™, Garnet Abrasive |
⚙️ Applications
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Abrasive Blasting: Rust, paint, and coating removal using single-use or recyclable systems
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Waterjet Cutting: Precision cutting of metals, ceramics, glass
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Water Filtration: Used in multi-media filters for sediment removal
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Surface Preparation: For bonding and coating on metal substrates
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Abrasive Products: Sandpaper, discs, polishing tools
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Gemstone Market: Almandine and Pyrope as jewelry stones
🏭 Production & Origins
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Natural Sources: Alluvial deposits (India, Australia, USA), hard rock mining (China, South Africa)
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Processing Steps: Crushing, screening, magnetic separation, drying, sizing
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Major Producers:
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GMA Garnet Group – Australia, USA, South Africa
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Barton International – USA
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Indian Garnet Sand Co. – India
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🔄 Substitutes & Comparison
| Material | Difference / Suitability |
|---|---|
| Aluminum Oxide | More aggressive; less recyclable; suitable for stainless steel |
| Steel Grit / Shot | High impact; contains iron; less suitable for corrosion-sensitive surfaces |
| Silicon Carbide | Very hard; expensive; used in precision finishing |
| Glass Bead | Gentle finish; used for polishing and cleaning |
