106 research outputs found
Dwarf Copper-Gold Porphyry Deposits of the Buchim-Damjan-Borov Dol Ore District, Republic of Macedonia (FYROM)
The metallogenic aspects, tectonic setting, magmatism, structure, and composition of Au-and Ag-bearing porphyry copper deposits in the Buchim-Damjan-Borov Dol ore district and their genetic features are considered and compared with earlier published data. Special attention is paid to supergene gold in heavy concentrate halos of the Borov Dol deposit. The total Cu reserves of the deposits discussed in this paper do not exceed 150 kt. The Buchim deposit likely is the world's smallest deposit of this type currently involved in mining. A comprehensive study of these dwarf porphyry copper deposits is undertaken to answer questions on the conditions of their formation. How do they differ from formation conditions of giant deposits
Método para la Determinación y Observación Microscópica de Minerales Metalíferos, Especialmente a Luz Reflejada
Fil: Schneiderhöhn, HansTraducido por Teodoro Askenas
Über das Vorkommen des Aluminiums in einer ooidische Eisenerze enthaltenden marinen Schichtfolge
Rinne, Friedrich, Gesteinskunde. Für Studierende der Naturwissenschaft, Forstkunde und Landwirtschaft, Bauingenieure, Architekten und Bergingenieure. 8. und 9. Doppelauflage
Eine vergleichende Studie über Methoden zur quantitativen Bestimmung von Abrundung und Form an Sandkörnern (Im Hinblick auf die Verwendbarkeit an Dünnschliffen)
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