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 . Thus the sequence of vein formation and fault- ing was as as follows ( see also Plate No. 3 ) : 1 . 2 . The formation of the north - south vein system . Formation of the cast - west vein system and faulting along these veins ...
... faults . Thus the sequence of vein formation and fault- ing was as as follows ( see also Plate No. 3 ) : 1 . 2 . The formation of the north - south vein system . Formation of the cast - west vein system and faulting along these veins ...
Page 7
... fault movement . Location : Level , 450 Along a cross - fault . Magnification : 460 Cross - cut PLATE No. 3 DIAGRAMS SHOWING STAGES OF FAULT MOVEMENT STAGE atural size . Plate No. 2 .
... fault movement . Location : Level , 450 Along a cross - fault . Magnification : 460 Cross - cut PLATE No. 3 DIAGRAMS SHOWING STAGES OF FAULT MOVEMENT STAGE atural size . Plate No. 2 .
Page 7
... fault movement . Location : Level , 450 460 Cross - cut Along a cross - fault . Magnification : PLATE No. 3 DIAGRAMSSHOWING STAGES OF FAULT MOVEMENT STAGE No. ilatural size . Plate 1o . 2 .
... fault movement . Location : Level , 450 460 Cross - cut Along a cross - fault . Magnification : PLATE No. 3 DIAGRAMSSHOWING STAGES OF FAULT MOVEMENT STAGE No. ilatural size . Plate 1o . 2 .
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