| 1. | Generally nickel laterites require very large olivine-bearing ultramafic intrusions.
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| 2. | This is especially critical for komatiite lavas and ultramafic intrusive rocks.
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| 3. | It also occurs in andesite volcanic rocks and altered ultramafic rocks.
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| 4. | These basaltic lavas are intruded by narrow mafic and ultramafic sills.
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| 5. | It grows only in the rainforest on ultramafic soils in eastern Sabah.
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| 6. | Chrysoprase results from the deep weathering or ultramafic ophiolite rocks.
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| 7. | The mountain is made from ultramafic rock of unknown age.
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| 8. | One example concerns crystallization of melts that form mafic and ultramafic rocks.
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| 9. | The sulfides are concentrated within boudin necks between ultramafic boudins and lozenges.
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| 10. | Chesterite is usually found in thin sheets within ultramafic rocks.
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