Milky Quartz
- Milky Quartz is a common variety of quartz characterized by its opaque to translucent white or milky appearance. It is one of the most abundant types of quartz found in nature and gets its distinctive color and translucency from numerous microscopic inclusions of fluids, gases, or trapped minerals, as well as internal fractures or microscopic bubbles.
- Milky quartz forms under various geological conditions, typically in environments with silica-rich solutions. Its formation is often linked to:
- Hydrothermal Processes: These occur when hot, silica-rich fluids circulate through cracks in rocks, cooling slowly to form milky quartz.
- Pegmatites: Milky quartz is commonly found in pegmatite formations, where it grows with other minerals under slow cooling conditions, allowing large crystals to develop.
- Veins and Geodes: It can also be found filling cracks and veins within rocks or inside geodes, where it grows inward from the walls of cavities.
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- Milky quartz
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- Semi Milky
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- Pure Milky
| S.No | List of Parameters | Results (%) | |
|---|---|---|---|
| 1 | Electrical Conductivity | EC | 4 µs/cm |
| 2 | Silica | SiO2 | 99.82 |
| 3 | Aluminum | Al2O3 | 0.01 |
| 4 | Iron | Fe2O3 | 0.01 |
| 5 | Potassium | K2O | 0.005 |
| 6 | Sodium | Na2O | 0.007 |
| 7 | Titanium | TiO2 | (DL 5) |
| 8 | Calcium | CaO | 0.01 |
| 9 | Magnesium | MgO | 0.002 |
| 10 | Loss on Ignition | - | 0.05 |
| Physical Properties | |||
| 11 | Hardness | 7 | Mohs Scale |
| 12 | bulk Density | 1.5 to 1.6 | g/cm3 |
| 13 | Specific Gravity | 2.65 | |
| 14 | Moisture Content | Negligible | Non-Porous |
| 15 | Melting Point | 1650 to 1730 | Degree |
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- Glass Industries
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- Paint Industries
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- Engineered Stone
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- Photovoltaic Cell Application
Characteristics of Milky Quartz
Color:
- The most distinguishing feature of milky quartz is its white to milky, cloudy color. The color can range from pure white to slightly grayish or off-white, depending on the presence of impurities or inclusions.
Transparency:
- Milky quartz is typically opaque to translucent, meaning it does not allow light to pass through clearly. Its milky appearance is due to microscopic inclusions and the way light scatters within the crystal.
Luster:
- It has a vitreous (glass-like) to greasy luster. When polished, it can have a slightly shiny or waxy surface.
Chemical Composition:
- Milky quartz has the same chemical formula as other types of quartz, SiO₂ (silicon dioxide). The “milkiness” is due to internal inclusions rather than a difference in chemical composition.
Crystal Structure:
- Milky quartz shares the hexagonal crystal system with other quartz varieties. It often forms in large, massive deposits rather than well-formed individual crystals.
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