A Study of the Visible Indications of Ore Value in the Metadiorite of the Mother Lode Area Near Jackson, California ... |
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Page 36
... silica has been extracted from the wall - rocks . In the same manner and at the same time , the wall - rocks absorbed carbon dioxide , potassium , sulphur , and line from the solutions . The result of this was the accumula- tion of silica ...
... silica has been extracted from the wall - rocks . In the same manner and at the same time , the wall - rocks absorbed carbon dioxide , potassium , sulphur , and line from the solutions . The result of this was the accumula- tion of silica ...
Page 37
... silica gels and sols , and can be readily precipitated from these dispersions . It is most probable that gold was carried in such colloidal form . The presence of gold chloride , or any other gold salt , in the solution is very ...
... silica gels and sols , and can be readily precipitated from these dispersions . It is most probable that gold was carried in such colloidal form . The presence of gold chloride , or any other gold salt , in the solution is very ...
Contents
Factors Contributing to This Study | 23 |
Inaccuracies in Study | 28 |
Negative Results of Study | 31 |
2 other sections not shown
Common terms and phrases
420 drift Distance 420 drift Position 450 Distance 65 degrees 7x natural 7x natural size abundant altered to talc assay Au per ton bands Calcite Calculated pyrite value Central belt chalcopyrite constituent of specimen country rock cross-faults crystalline crystallized pyrite crystals see Plate degree of crystallization diorite Distance above level East belt east-west vein Easyz Bird vein estimated degree euhedral fissures foot-wall side Fracturing free gold Fyrite geology gold content Gold Deposits gold value gouge hanging-wall side highly altered impregnation inches irregular and massive Lovel Magnification massive and irregular massive bull massive pyrite mesothermal meta metadiorite area mineral MOKELUMNE HILL north-south vein system numbers perfect cubical crystals polished sections Position in vein precipitation present principal constituent PY Qtz pyrite crystals pyrite cubes Pyrite percentage Q+z Py raise Distance region Replacement slightly fractured small amount small irregular masses speci tion transparent Valuc vugs wall-rock walls