 | | Book | | .......................................... 203 Guyana .................................................albite, green biotite, sphene, apatite and rare arfvedsonite, aegirine-augite and magnet ite. The rock of...feldspar, aen igma t i t e, sodic pyroxene and arfvedsonite. The fo llowing ' Ea rly tome-form i n g assemblage'...dspar, intersti tial quartz and poi kilitic arfvedsonite, aenigmatite and aegirine, and sparse opaques...albi te, 20% .iegiri nc-augite and accessories; arfvedsonite occurred in one thin section. Age Precambrian |  | | Book | | Kimberlites, lamproites, and diamonds in the Kimberley region, Western Australia 25 1.10 Important diamond...Brakos-Doornberg lineaments in the Gordonia-Carnarvon region 216 13.4 Distribution of alkaline rocks in Australia...zone 228 13.15 Geodynamics of the Anabar-Olenek region 230 13.16 Suggested strike-slip fault zones within...kimberlitic bodies and fields within the Olenek region of the northeastern Siberian Platform. At the same...involved in the geological mapping of the Udja region, which resulted in a discovery of a new province |
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