| 11. | However, the potential for clay, dolomite, heavy minerals and building gravel merits also to be considered.
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| 12. | Altered ilmenite forms the mineral leucoxene, an important source of titanium in heavy mineral sands ore deposits.
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| 13. | Locally heavy minerals have been concentrated by wave action, including rutile zircon and ilmenite, forming economic mining opportunities.
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| 14. | Locally heavy minerals have been concentrated by wave action including rutile zircon and ilmenite forming economic mining opportunities.
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| 15. | The Dalmellington line continued operating a heavy mineral service, and the long Stranraer line had a chequered existence.
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| 16. | Local exports include coal, aluminium, titanium and other heavy minerals, granite, ferrochrome, paper pulp, woodchips and phosphoric acid.
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| 17. | The coastline is also relatively rich in heavy minerals, with significant amounts of zircon having recently been discovered.
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| 18. | Larger waves can sort out sand grains leaving deposits of heavy minerals visible on the surface of erosion scarps.
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| 19. | Furthermore, those that do occur are generally heavy minerals or coarse grained micas ( both Muscovite and Biotite ).
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| 20. | As heavy minerals are a minor constituent of most sedimentary rock, they must be separated out to be studied.
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