| 1. | There are many areas of the world where rocky terrain or magnetic minerals would frustrate the magnetometers.
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| 2. | These include carbon compounds, magnetic minerals and more complex hydrocarbons similar to those deposited by Earth bacteria.
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| 3. | Avoid iron rich deposits when using a compass, for example, certain rocks which contain magnetic minerals, like Magnetite.
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| 4. | Tarduno and his team determined where the volcanoes formed by analyzing the rock for the magnetic mineral magnetite.
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| 5. | Experts called it paleomagnetism and found that the tiny compasses were often made of magnetite, a naturally magnetic mineral.
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| 6. | This is possible as magnetic minerals precipitate in the melt ( crystallize ), they orient themselves with Earth's magnetic field.
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| 7. | Magnetic minerals trapped inside ancient rocks have recorded hundreds of these so-called polarity reversals in the past 500 million years.
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| 8. | Furnaces, fireplaces and kilns may have a strong magnetic anomaly because a thermoremanent magnetization has been baked into magnetic minerals.
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| 9. | In the latest work, the researchers examined grains of magnetic minerals within the meteorite, each about one-250th of an inch long.
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| 10. | Strongly magnetic minerals have properties that depend on the size, shape, defect structure and concentration of the minerals in a rock.
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