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 7
... faults range from a few inches to 50 feet . Indications are that faulting in the The veins was contemporaneous with the formation of the veins , and continued after the deposition of th vein material . cross - faults appear to have ...
... faults range from a few inches to 50 feet . Indications are that faulting in the The veins was contemporaneous with the formation of the veins , and continued after the deposition of th vein material . cross - faults appear to have ...
Page 12
... faults which intersect the vein at this angle . It is apparent that ore shoots have been formed at the inter- section of th transverse faults and the vein . The effect of the north - south vein system is obscured because these veins are ...
... faults which intersect the vein at this angle . It is apparent that ore shoots have been formed at the inter- section of th transverse faults and the vein . The effect of the north - south vein system is obscured because these veins are ...
Page 13
... faults , approaches grano - diorite . The metadiorite reaches its greatest degree of alteration in the inclusions of the vein and in the thick gouge zones of the transverse faults . In these areas of greatest alteration , some of the ...
... faults , approaches grano - diorite . The metadiorite reaches its greatest degree of alteration in the inclusions of the vein and in the thick gouge zones of the transverse faults . In these areas of greatest alteration , some of the ...
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