| 1. | It also occurs in andesite volcanic rocks and altered ultramafic rocks.
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| 2. | The mountain is made from ultramafic rock of unknown age.
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| 3. | One example concerns crystallization of melts that form mafic and ultramafic rocks.
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| 4. | Chesterite is usually found in thin sheets within ultramafic rocks.
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| 5. | Bauxite carrying region is part of the Orahovac massif of ultramafic rocks.
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| 6. | The ultimate source rocks may be mafic-ultramafic rocks.
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| 7. | It occurs in low-temperature hydrothermal veins and in serpentinized ultramafic rocks.
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| 8. | The rock is composed of asbestos ( chrysotile ), an ultramafic rock.
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| 9. | Chromium is commonest in mafic and ultramafic rocks in which beryllium is extremely rare.
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| 10. | At the veins in amphibolites and ultramafic rocks.
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