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Página vii
... pyrites . An increase of arsenopyrite leads to another type laid down by Beck , viz . , arsenical gold - quartz reefs . Varying proportions of each pyrite connect the two types . Follow- ing Dunn and Courtis , I have sought by ...
... pyrites . An increase of arsenopyrite leads to another type laid down by Beck , viz . , arsenical gold - quartz reefs . Varying proportions of each pyrite connect the two types . Follow- ing Dunn and Courtis , I have sought by ...
Página viii
... pyrites . 2. Copper pyrites . 3. Arsenical pyrites . 4. Galena . 5. Zinc - blende . These have been proved to precipitate gold from solution in the laboratory , and the probability is that they have precipitated the gold found in the ...
... pyrites . 2. Copper pyrites . 3. Arsenical pyrites . 4. Galena . 5. Zinc - blende . These have been proved to precipitate gold from solution in the laboratory , and the probability is that they have precipitated the gold found in the ...
Página xxvi
... pyrites over the Frue vanners . The tailings are then pumped to the cyanide plant , each dis- tributing - vat holding 100 tons of tailings , which are trucked into leaching - vats in front and below . The slime passes in the overflow ...
... pyrites over the Frue vanners . The tailings are then pumped to the cyanide plant , each dis- tributing - vat holding 100 tons of tailings , which are trucked into leaching - vats in front and below . The slime passes in the overflow ...
Página xxxiii
... pyrites , 10.23 dwts . per ton . From the above quartz , 77 tons pyrites were obtained , containing 383 ozs . gold ; and the average value of the tailings is 2 dwts . per ton . The average value of the pyrites per ton is 4 ozs . 18 dwts ...
... pyrites , 10.23 dwts . per ton . From the above quartz , 77 tons pyrites were obtained , containing 383 ozs . gold ; and the average value of the tailings is 2 dwts . per ton . The average value of the pyrites per ton is 4 ozs . 18 dwts ...
Página l
... old City P.A. A tunnel was driven east from the west boundary of the section for about 120 feet , and at 50 feet a wide mullocky formation was struck , carrying quartz and pyrites . This was driven through for 1 Telegraph Mine City Mine.
... old City P.A. A tunnel was driven east from the west boundary of the section for about 120 feet , and at 50 feet a wide mullocky formation was struck , carrying quartz and pyrites . This was driven through for 1 Telegraph Mine City Mine.
Términos y frases comunes
12 feet 20 feet 31st December accident acres adit alluvial arsenopyrite Beaconsfield boundary bruises cage carrying channel City of Hobart Coal Company copper Cox's Bight Creek crosscut east crushed depth district Ditto Ditto drive dwts east reef explosives feet feet further feet west feet wide flat fractures further west Gate reefs gelignite gold-bearing Golden Gate gossan granite ground Grubb's shaft Gully hill Hobart inches injured intersected Loane's reef lode Lyell main reef main shaft Mangana Married Mathinna Miner's Dream mineral Mount Cameron Name of Sufferer north and south north-west occur outcrop passed payable prospecting pyrites pyrrhotite quantity quartz quartz veins quartzite reef formation reef-channel Renison Bell rock sandstone schist Section shoot slate sluice South Gate stone stope strata sunk surface Tasmania Gold Tasmanian Consols tion tons truck tunnel underground underlay ventilation west reef western reef width winze Zeehan zone