Arizona republican., 1897-09-16

in this camp. mere nave UeSu udny improvements made preparatory to very extensive working. They have got here large bodies of moderately rich gold ores.
 On the Arizona side back from the river and far to the northward and above pm the east side of the Colo rado, is the country that right now IS being explored and prospected for the veins from which has come the enormously rich placer gold produc- tion of the earliest and past records. It is in this region where Colorado ans are going in to prospect and mine for gold
 The region is mountainous, and the junction of a northwest and south east range with the San Bernardino range. It is a semi-vOlcanic region >cf country with many crater-like erupdons. The Colorado river comes in at the junction of the ranges, and has cut them and its channels for thirty miles out of the solid rocks, and the river valley is consequently quite narrow; the current is swift and deep. On the Arizona side of the river and just above the junction, the Colorado river valley opens out broad, and the Chocolate range strikes to the northwest, its western wall being precipitous and for miles the line of fracture is a straight li-e wall of rocks erupted; here and there the horizon line is saw-toOthed as the canyons enter out upon the Colorado valley, these canyons continue to the river as dry washes, on either side | leaving a long inclining mesa of au- 1 riferous gravels on top of the meta morphosed area of Photographic | stones or belt, lying between the 1 Colorado river and these Chocolate mountains So far as known no one has tested the values of these great l auriferous gravel beds that extend at this point and place, for miles up and down the Colorado river, eastern bank, as detritus from the Chocolate mountain range, eruption and depos- ited wash from the ancient Colorado river bed, which at this place was | then very wide and quite deep; really a great lake or gulf. For the whole i country shows it was then covered with salt waters and probably so at the time of the eruption that made these chains of mountains Such are the indices and the elevation of tho Colorado river at this point is but 325 or $50 feet above the ocean level
 In these dry washes, coming down out of the Chocolate m-auntains, is now found fine and coarse placer gold. | As one goes east following the milk white gold quartz and the hematite | honey -combed float of the dry wash. in search of the source of this float. suddenly an entrance is made into a formation tilted and standing nearly perpendicular. These are states, in which are bands and stringers of quartz with here and there great lines of carboniferous characters, all show ing metamorphic alterations. As sud- denly you enter upon belts of vol
 ca icly metamorphosed sand stone
 that now are wide zones of semi
 quartzites, that on their east side rest
 on and contact with the second, but
 first erupted aAoic rocks, and immedi-
 ately in them appear the long ore
 shoots and veins of the milk-whitl
 and hemafite quartz from whence
 come the free gold of the dry arroyos
 These azoic rocks all show their met
 amorphisms and effects of the volcanic
 2-d eruptive stress attractions tt
 semi-serpentime and great strikes ot
 diorite or greensboro, along the planes
 of which occur the white quartz anl
 hematite ores of gold. These veins
 show true Assuring. Practically this
 belt is the southwestern slope or side of the great continental belt tha
 passes from Oregon, California, here
 and on into Mexico. For they appea
 above here on the west side of tht Colorado river, on their northwestern
 strike, and on the southeast to sou1 : strike they appear passing near Flu
 reka district, and on the southeast o , Yuma, wherein is the famous pro 1 ducer, the Fortuna mine. of like or
 and circumstances. ..