• Abstract-Chemical and isotopic analyses of water from drill holes and mines throughout the Fennoscandian Shield show that distinct layers of groundwater are present. An upper layer of fresh groundwater is underlain by several sharply differentiated saline layers. which may differ in salinity, relative abundance of solutes…
To illustrate. the techniques involved and prov1oe a background for those not familiar with Eh and Ph, we might first very briefly define the terms, describe their measurement and indicate the method of Eh-pH diagram construction. Eh The oxidation potential of an aqueous system is determined experimentally by measuring the voltage between a…
Experiment, with a small spouted-bed reactor have shown that fluidized-bed reduction of New Zealand titaniferous ironsands with hydrogen, and with carbon monoxide• containing 50'c hydrogen, can be conducted without sticking, in the temperature ranges 700°-900°c. At 900°c reduction proce…
Residual soil is one of most widely employed sampling materials for tracing geochemical anomalies in geochemical exploration. Systematic studies on the phenomenon of the formation of geochemical anomalies in residual soils are being carried out by the Geolo…
Logam nikel merupakan salah satu lo~am yang mempunyai daya tahan terhadap korosi dan panas, serta telah sejak lama digunakan oleh manusia baik untuk keperluan alat rumah tiniga, sektor konstruksi maupun industri. Di alam nikel terdapat dalam dua jenis/bentuk, yaitu nikel sulfida dah nikel silikat atau nikel oksida, sedangkan min…
Edisi
-
ISBN/ISSN
-
Deskripsi Fisik
80 halaman, tidak berwarna, cover hijau muda, lamp
ZeoIit alam meruoek sn senyawa e l um t no=e i I i ket: t.erh i aree i yang secara fisik dan kimia mempunyai kemampuan sebagai bahan penyerap reasoroe i ) , oenuk er ket ion , dan katalis.
Di Indonesia, zeo1it termasuk salah satu bahan galian yang baru diusahak.an den dimanfaatkan. o leh kerene …
Edisi
-
ISBN/ISSN
-
Deskripsi Fisik
51 Halaman, lampira tabel, lampiran gambar, isi ti
Tembaga di alam terdapat sebagai mineral sulfida dan oksida, dengan mineral utamanya khalkopirit, kalkosit, kovelit, kuprit, malasit, bornit dan native. Logam tembaga banyak digunakan di sektor konstruksi dan industri.
Dewasa ini perkembangan industri pengguna tengah dan akhir (hilir) logam tembaga di dunia telah berkembang dengan p…
Edisi
-
ISBN/ISSN
-
Deskripsi Fisik
73 halaman, lampiran tabel, lampiran gambar, isi t
Zur Gewlnnung der Probe fOr die Analyse wird von jedem nach DIN 1061 entnommenen Stein etwa ein Zehntel des 'ursprOnghchen Stein gewichtes mindestens aber 200 und hoch- tens 1000 g auf eine KorngrBBe von etwa 1 mm unter Vermei~ung von Verlusten vor• zerkleinert. Die AuBenhaut der Steine, die durch …
Dalam rangka. evaluasi tunpukan terak II yang terda.pat di daerah Peleburan, T:irnah Indonesia Mentok (PELTlM) atas dasar kandungan Tantalum (Ta), Niobium (Nb), Tungsten (W) dan Timah (Sn), maka dari turrpukan terak II tersebut telah diarnbil conto-conto dengan cara. pent>oran (menakai Bor Bangka) •Kegiatan pengambilan_conto-conto …
The discovery of the- negative belt of gravity anomalies along the trenches in Indonesia by Vening Meinesz has awakened geologists and geophysicists to developing ideas of,the formation of island arc systems and mountain building processes. The modern tectonics which is still, according to the author, a hypothesis should be proved, although s~e g…