 | | Journal (issue) | | RESIDUES Containing GOLD, SILVER, PLATINUM, COPPER, TIN, ZINC, LEAD REFRACTORY GOLD CONCE'NTRATES etc. ...per cent. in the average annual price of metallic tin, as a result of which the Malayan production declined...together with its enhanced price offset the fall in tin by as much as £2 million; in Sierra Leone (£0·6 million);...Zircons from nepheline-syenite-gneiss, south of Mine Camp, Tambane apparent ages of four samples: 515...from an albite-aegirine rocl( 2 miles north-west of Mine Camp, Tambane apparent age: 542 m.y. Average apparentage |  | | Journal (article/letter/editorial) | | Gatooma-Hartley; (11) Gwanda; (12) Gwelo; (13) Lonely Mine; (14) Lower Gwanda; (15) Makaha; (16) Mashaba; (17)...e l y Mine) Filibusi, Selukwe, F o r t R i x o n , Shangani, U m t a l i Bulawayo (Queens Mine, biotite... 18 associated with each greenstone belt may on field relationships be divided into four geotectonic categories...the various granites can be demonstrated in the field, it is difficult at this time to establish everywhere...Mtoko and Biri granites in the north and Chibi, Zimbabwe and Chilimanzi granites in the southeast. Contact |  | | Report (issue) | | that over certain large oceanic areas the magnetic field is unusually smooth. The borderland between continents...indicate that over large oceanic areas the magnetic field is unusually smooth. As data accumulate, valuable...set out then to measure this ground motion in the field and in models. The results obtained (Tatel and Tuve...(R). Figure 2 of Plate 1 is a copy of a typical field seismogram recorded at a distance of 10.4 km. The...The scale factors have been chosen so this field seismogram can be compared to the ones in Figure 1 and |
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