. Mining and Scientific Press . UgW The M .v K prospecl is interesting geologically andmineralogically because of the unusual type of occur-rence for this Province and of the remarkable associationof copper and lead minerals. The following descriptionis based almost entirely on my field-notes, and is pub-lished with the consent of the parties for whom the exanimation was mad. The property is situated about 15 miles in an easterlydirection up Legate creek, which enters the Skeena riverdii. mile west of Pacific on the Grand Trunk Pacific rail-way. See map. It is reached by a pack-trail leadingfr
. Mining and Scientific Press . UgW The M .v K prospecl is interesting geologically andmineralogically because of the unusual type of occur-rence for this Province and of the remarkable associationof copper and lead minerals. The following descriptionis based almost entirely on my field-notes, and is pub-lished with the consent of the parties for whom the exanimation was mad. The property is situated about 15 miles in an easterlydirection up Legate creek, which enters the Skeena riverdii. mile west of Pacific on the Grand Trunk Pacific rail-way. See map. It is reached by a pack-trail leadingfrom the railway directly to the property. The mineralshowings extend from an altitude of 4100 ft. up to 4725ft., along the southern side of the M. & K. ridge, whichpresents a fairly even slope of about 35°. The geology of the dposit is simple. The country i ks consist of a conformable scries of lavas and volcanic fragmentals, among which In-own amygdaloidal andporphyritic andesite and basalt, greenish-black tuff, and ALASKA. UMBI A Scale of MilesO SO brownish tuff agglomerate are prominent. This series isbelieved to belong to the Hazelton group. Dikes and sillsof quartz-porphyry intrude these roeks. and sci-m to In-responsible for the formation of the ore-minerals. The bedded voleanie roeks strike almost due north(magnetic) and dip about 35° easterly. This structurecontrols the topography of the mountain-side, which,therefore, becomes a dip-slope. The mineralized zoneoccupies a persistent horizon that lies immediately under-neath the overburden over the main part of the slope andconforms closely in attitude to the contour of the an easterly direction this horizon disappears fromview under a thick cover of the volcanies (Fig. 2 |. Thiszone has been followed and opened up to a slight extent at intervals for an inclined distance ol 850 ft, in a southrly dire, linn, which on a dip of 35 gives horizontaland vertical dimensions of 700 and 500 Ft., respectivelyThere is no r
Size: 1815px × 1377px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booki, bookpublishersanfrancisco
