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
... the fissures , and a concentration of the ascending solutions . A. Knopfl believes that practically all of the quartz filling Professional Paper 157 , idom . , p . 45. 1939 . was derived from the wall - rocks ; but this 36.
... the fissures , and a concentration of the ascending solutions . A. Knopfl believes that practically all of the quartz filling Professional Paper 157 , idom . , p . 45. 1939 . was derived from the wall - rocks ; but this 36.
Page 38
... was another factor in the concentration and subsequent deposition of the minerals carried by the solu- tions . As the heated solutions percolated up through the 1 op . cit . fissures , they remained in their liquid state only as 38.
... was another factor in the concentration and subsequent deposition of the minerals carried by the solu- tions . As the heated solutions percolated up through the 1 op . cit . fissures , they remained in their liquid state only as 38.
Page 41
... concentration and slow deposition would be natural upon the gradual escape of gases and other solvents into the country - rock . ( 2 ) Almost immediate concentration and deposi- tion would result by the sudden opening of cavities by ...
... concentration and slow deposition would be natural upon the gradual escape of gases and other solvents into the country - rock . ( 2 ) Almost immediate concentration and deposi- tion would result by the sudden opening of cavities by ...
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