The Arizona sentinel., 1901-10-16
LA FORTUNA MINE.

In the early days of gold discovery of Califor- mia, 1S4S, when the news reached the gold miners ot sonora there was general exodus Of the ab!e-bCdled men who were able to get away northwest to the new Fl Dorado in California and the state Of Sonora contributed many men 10 the mining population. They tCCk the old road, which was known aS the 'camino real ' from EStanCla and Altar northwest ward. nearly p3rallel to the gull following the nom q in ridge known as the Gila range just north or OUT present ooundarY. The road led to una. and in passing the Glia raage they went within few feet or yards of a very modest OutcrOp of quartz which no one seemed to consider Of Suf- Hcient value to merit any attention That hum ble and inSigni ifcant quartz Outcrop is today the outcrop of the great Fortuna mine.
 It is situated on the westward slope and nearly Gt the base or Inc raitye of mountains called O.. some of .hn Dir' .:tS.S T1n Csi,a range mi. trends rC .. .'..-:'.- and reaches neari- to n. Glla rive. .-,.. ;oE 1nOWn as i3iaiSdol around tne l-or lhweS5 point Of this rance Where the rocks are exposed ad that point the are mostly c1 L0no@-1@5ls granite, of Pra color G1d sea-stfrsG tr ii" rfaa"S. whtaI however. are -n.at f-..6 a. is .,- Ca., n. lgw-Ixing b5
 Srr1tiieu 2
 fed. for 5i," ,, ard lapinat.ti :l-..,. .c..a;.ci. rock, usa inc M. ''gnaiSaic' j Ver ran4ca3 cl c0-Y?rg-.,t tt,Y.-; sense. t'r c". 5o-.--i,5e -hase rocks U-cA '7 -...a.f-o .-.a s
 poIaGiors ,f ,i ;af .~.:. ,,.-sr .ia.i-, upper part Of the series s7ith green stains. s. posed to be stains of copper and decOnpoSitio of copper ore, which they probably are al though there are peculiaritiss of color. and some yellow coloTS, which indicate to me the presence of some other mineral possibly, tel 1uT1um, which by its decomposition has given these colorS- Ike fact remains, however. that the bullion from the upper part of the vein con- tsalnS more copper than it now contains in the lower levels of the mine. The workings which have been hpr haE condition of things which could not be foretold from an inspection of the outcCop The vein or lode appears to be a chimney not coItinC- ouS ore body. nor continuous vein with an ore body or chimney or chute upon it. AS re marked the oUtcropping points indicate that there Is no very great longitudinal extension of this ore body.
 The vein is remarkable first in this limited out crop; second, in its continuity in depth it's con tinued satisfactory richness. and the promise it gives Of enrichment by further veins dipping into it on the foot-wGl sides.
 Some facts in regard to the product or yield {: The ore paid from the surface. The product or, ore extracted up to the time has been about SD tons per day, which is sent to the 20-stamp mill. each stamp of which cruSheS about tons in every GWenIy-IouT hours. The cXtfactlon Is chiefly and largely by power drills. A force of 80 men k employed by this mine and mill. The greater part of the labor underground and mining is done by compressed air. The lode was told, was 6 to l5 feet wide This large space permits the use of power drills to great advantage. In the material hoisted there are lrdgClenIS O. the wall fOchS some or WllGh are thrown out, but many pieces pass through the mill. They ~ 1uld prefer to reject most of this wall rock, but It would take more time and ex- panSe than it does to mil Il. and there i~ q chance of some Of t containing gold. From these S0 tons of rock crushed daily the avcrs3-e produc: is perhaps S48.0O wort. Of gold per month. Some months they have produced as high as S90O00.
 In the region or the Fortuna mine the furln&- tons appear to be wholly Of mica slate and hOrnblende slate. with some aTenaceous layers Ike old micaceous SandStOaeS and qU8rtZiteS. The mine is surrounded by black hOrnblendiC 6, ,ateS and mica states, dipping SOuthward and s9uthwestward at an angle of about 45 degrees and these states are very evenly laninated ridge after ridge.