| 11. | It occurs as incrustations and vein or fracture fillings in ultramafic rocks and serpentinites.
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| 12. | The genus is well diversified on ultramafic rocks and some species are nickel hyperaccumulators.
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| 13. | It grows in mountainous habitat on ultramafic rock substrates, often in serpentine soils.
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| 14. | Importantly, large volumes of ultramafic rocks are not found in association with Proterozoic anorthosites.
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| 15. | Particular floral assemblages associated with highly nickeliferous ultramafic rocks are indicative tools for mineral exploration.
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| 16. | Ultramafic rocks of the Hooggenoeg Formation were most likely not parental for the felsic rocks.
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| 17. | Ore deposits of this type are restricted to the weathering mantle developed above ultramafic rocks.
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| 18. | It occurs in an ultramafic rock deposit.
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| 19. | Rocks in the Cobb Valley include gabbro and ultramafic rocks that are now largely serpentised.
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| 20. | The floral assemblages associated with highly nickeliferous ultramafic rocks are indicative tools for mineral exploration.
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