Oil is by far the most important of minerals mined in borneo. Next are coal and gold , diamonds, whereas other mineral not or insignificantly have been mined. The southern and Eastern departement, especially the eastern and southeastren parts are of the utmost importance for the mining industry. Gold, homever, occurs only in the westren departement …
All the samples were pretreated in servies of 12, for each series a data card was used. An eastimetion of the colour of the samples is noted. A scooped sample is slightly crushed in a porcelain dish with a rubber pestle to break down aggregates.
The Bekapai field is located 15 km off mahakam river delta,east coast of kalimantan,on the mahakam contract area,where total indonesie,acting as,has been associated with japex indonesia limitid since 1970,each having a fifty percent interst (Fig,1 and 2)
Meningkatkan devisa negara selain migas,bisa dicapai dengan meningkatkan dan mengembangkan industri pertambangan,diantaranya adalah penambangan dan pengolahan logam mulia(emas,perak)
Dalam tahun kedua pelita(1970/1971)dinas eksplorasi telah penyusun rentjana kerdja suatu team untuk melaksanakan penyelidikan dan pemetaan mineral didaerah indonesia timur chususnja nusatenggara
The different age of various granite occurrences in sumba timor,flores,alor and wetar clearly represants the differences in geologi and structure of the islands.VAN BEMMELEN has assigned the age of latr-mesozoic to those of sumba ,middle-tertiary to those of flores and late-tertiary to those of alor and wetar .the granites of timor have been grouped…
Dalam rangka pemetaan geologi regional lembar surabaya ,yang termasuk di dalamya antara lain p.lombok,penulis telah dapat kesempatan untuk meninjau pertambangan timbal di lentek ,kab.lombok tengah.peninjauan ini dilakukan amat singkat berhubung waktu yang disediakan amat pendek.