The weekly Arizona miner., 1873-04-05
Ghe 9Miner.

The original location is l GOO feet long, anI ' is owned by Jackson Brothers ot Prescott, 17bas. Taylor, Jas Fine and McCrackcn. Sey- cral eXtentions on it are located. but not opened There are two small veins running ( parallel Co the Del Pasco, 1 and inches wide, ( on the. same slope below it. They are also contact between porphyry and slate, .he dikes of the former recurring here very frequently. The ore is of the same qualityas that of the Del Pasco, but not az rich m gold. A great number of similar veins arc located and slightly prospected in this district. They are all on the same main ridge and its north ern spurs One tact Is quite remarkable Tn connection with the veins of this district; they all carry, besides the gold, more or less arseniate of iron and carbonate of lead, and the gangue is soft. This is of course not in- furious to amalgamation as long as the ores remain decomposed; but small pieces of un- decomposed galena and arscnical pyrites, oc curing even at the slight depth of 3D to p feet in some of the veins, though surrounded by decomposed matter, lead me to suspect that decomposition will be found not to ex tend far down, and that then the same troa- ble will here be encountered that prevents the working of the Hassayampa and Lynx Greek mines in depth. But should the ga Iona be found solid enough to permit smet AE can of course only prove beneficial for the prospects of the district.
 Pine Grove District
 This district must not be coufounded with another of the same name, which was several years ago organized on "Pine Flat" on the western foot of the Bradshaw Mountain, and which is for the present abandoned, though some ofits veins, notably the Minnehaha, are reported rich. The present Pine Grove district is located in "the basin' referred to above, between the two main ridges of the Bradshaw Mountain, in the low spur of the two and at least ,S00feet lower than the veins spoken of under the head of Bradshaw dis trict." The descent from the first or north ridge of the Bradshaw to this district is ex- ceedingy steep and precipitous, the trail runs down, and this side of the northern main ridge is almost entirely composed of meta phoric slatcs. The timber disappears on this declvity, and in it's stead the mountain is covered with thick chaparrel. Lower down in the valley the pine forest is met with again covering the whole basin and the side and the top d the second main ridge opposite
 The locations in this district were made later than those in the Bradshaw, and the work done here amounts really only to pros pectipg. Two arrastras are, however, built, and have run on surface-Ore.
 The New Era is vein running along q north and south spur of the northern main ridge of the Bradshaw Mountain, and is at least GOO feet lower than the Del Pasco. It IS a curious vein, the ven-matter being noth- ing, apparently, but a decomposed white feldspathic material, with many quartz seg- regations, occupying rent in the syenitic granite. It runs little cast of north, and dips 5O' southwest, between smooth and well defined walls. There are streaks of light, fa ,f ,,, tba ,l,. quartz is often chrystalized The Assure is exposed in a shaft l5 feet deep, and has very uniform width of about feet. This strange yein-inatter prospects quite well throughout, as l satisfied myself by repeated tests, and in spots shows free gold, which, however, always occurs in the quartz parti- cles and the yellow arseniate of iron. Tests ofaverage vein matter prospected from $20 to S25 per ton; and was informed that as- says had revealed the presence or more silver than could be contained in the gold, though the gold itself, to judge from its light color, contains much silver. As the ore resembles very much that from the upper levels of the Comstock lode which afterwards turned out to be pre-eminently a silver lode, it will be interesting to watch the future developments on this vein.
 The Dexter is vein running at right an gles to the foregoing, and contains a similar ore. It IS very slightly opened.
 The Belfast is another vein running north east aud southwest, and dipping northwest. It is 2 feet wide, and contains ore somewhat similar to that uf the New Era. It is, how ever, more quartzy and somewhat colored bv hydrated oxide of iron and arseniate of iron. The small shaft on this vein has produced some beautiful specimens of wire gold.
 The Osinippa, vein containing ore very much like the foregoing, has the same strike and dip, and is l l feet wide. The quartz is popous and brown, and contains arseniate of iron. In the l0-foot shaft the vein has sell wages on both walls.
 All the foregoing veins lie in syentic gran ite The Burro and Shelton are two adjoin- ing claims on the same vein, both 800 feet long. The vein occurs in granite, Is 2 feet wide, strikes northeast and southwest, and dips steeply northwest. The ore is a porous quartz, containing much brown hydrated OK idle of iron. The vein is opened by an open cut 5O feet long. Three tons of the ore taken from here have yielded $38 per ton in the ar rastra erected close to the vein on Arrastra creek. But the tailngs from this run are SO rich that good color car be obtained from them with horn spoon. The ore contains also some arseniate of iron, but is much har- der than that of the veins before spoken of
 The Young Vulturc is a quartz vein in s'aHito niSueT uP tue cIceh rom tne last named, and some 300 feet above the level of the valley. The surface quartz is brown and porous, and shows arseniate of iron and cop per stains. It pans well, but few feet dow II m the prospect hole galena and copper py- rites make their appearance. The vein has large cropping in spots along its course, but is generally not over IS inches wide. It's dip and strike arc the same as that of the forego- ing.
 The HagaD, ChattahoOche Benton, C.lfor- mia, Espinosa, and hundred others arc newly discovered veins in this district, but none oi them have as yet been developed.
 The veins of this district, it will be noticed, differ from those of the Bradshaw district in their country-rock and in the yein-matter in 80 iaS as it contains, with single exception, no lead ores. The ore is also more quartzy and harder, and will probably always have to L.. ...L,rL cl L.: 4