Bisbee daily review., 1911-02-23
REPORT IF TIE RAY COPPER
 MINING DISTRICT, ARIZONA

and minerallzed with copper glance and pyrite along joint planes, min ute quartz seams and a network of tiny fractures. with impregnation of the rock alongside of the fracture by specks of metallic sulphides. The surface cover has been thoroughly oxidized to a depth of 40 to 15.0 feet and this part is generally bar ren and leached near the surface, although it contains seams of rich loxidized ore and shades into dissem- nation ore in depth. Below this cropping of oxidized material is the ore body proper. constituting the lzone of secondary enrichment The l copper occurs here as glance (chal- lcocite) associated with pyrite. Chal- lcopyrite occurs very rarely and no bornite occurs save as films on py- rite
 There is as a rule sharp definl- tion between oxidized ore and the zone of secondary glance ore. but tongues of oxidation extend down
 ward into glance ore. n the Hede-
 line tRay Central shaft. this change to sulphide oro is not sharp ! as elsewhere, and the ere for some distance above the goo foot level.
 consists Of abolt half glance and
 half suprite. with some native and
 some carbonate.
 Beneath this gene Of secondary en- lrichment lies the zone of primary
 sulphides. The passage is gradual | but occurs within % feet CT SO. with
 various stages of secondary enrich ment in this distance. The primary
 ore consists of pyrite. with acces-
 sory chalcoprite, and occasionally
 molgbdenite In the diabase these
 sulphides. when miHe, concentrate
 into !. and the resulting product
 carries I2 per cent copper. The pri-
 mary schist ore carries less thaa
 Ter cent coy1e- The lzclzs Of
 this zone lack The alteration due to
 acid waters, and show a dependence
 or sainhides upon quartz. or at least
 silica tupregrahon and geinlets.
 This ore body forms great
 blanket in the mineral bell. The
 Thickness varies From 20 Ia about
 59o feet and over large areas VIII
 average 60. Tn eross-sectiop ii
 BoWs shallow basins and rounde
 eNransions. In the Matthias and
 Han claims 5rill holes show can-
 ping of oxidized ore. which am
 told was 175 feet thick. Beneath
 this pay ore extends down to a
 aepth of C95 feet. and the big ore
 body of the deposit lies in these
 and the sharkey claim or the, Ray , Consolidated company.
 The fauiting of the district. which IS Ierritiary. is according to Dr.
 s-eea Intimately connected win The ore bodies If the secondar, , enrichment is later, il is not. accord.
 ing 10 the doctor.
 } II seems almost impossible to eve, } be able to receive a rer--t of th, Copper Producers association win out thorn being concealed in it Q somewhere.
 The figures submitted last wee, 2 snow that during January the r-o auefion of new metal fsH to 14s D 'vo-Vee pounds a droD of ever r 'v0,oo0 pounds from the on,,,. o e tAe mines in December On 4b. ' other hand, this favorabla s..,a Of lower output. which mos, Y 5 tiS big producers have been st,,y Ing to attain from month to montl
 'hoer curtailment pian. sbrrn' 2 lnto significance when ii apnea~e. q mat consumption during Inc monf 2, haa fallen off percepHb!v and ,5s, J the surplus reserves of conner hs increased over 2O,0000e0 pound
 curing the month. bringing tba [, $ '7-i reserve of stncks on hand |, > 70 i4z.o00.060 pounds. q's:s la ,b Y Hfs' time in many months tha. .., a increase in the reserve bas n. 't shown. heretofore the rs.,aus e-., ie month to 1aonth Eavine show S, IS crease Of from S,G00.oo sto sO.5aa r 900 pounds per month.
 IT. This amount in the reserves va De caused almost entirely by the "a, h. that shtments roth abroad snl ih Iy sale to manufacturers fell off pe K ceptibly from the December agHre
 However. if the output of ne Is metal could now be kept at 1l2.eoa Ds 0ng pounds per month, one es 'a ls big improvements Of the a'tietie sd will have bsea registered IS it li- ol ly a oaesi5n of sho~, fin ks before business x.f pick ID radica ao iv and then 6ke amount that wiliz
 into the irads eTsTy mont7 viii } ,s. far in fIcess of 1t2000-ae9 pound ,v In this fashion a big hole will sd cut into the reserves inmedIatcl ad and a permanent improvement is. he metal shown.
 eu The first car lead of ore by tf sr, Summit ainisg companY. s5usssti: ks of 40 tons of 25 per cent ore VI; or shpped to the Fl Paso shelter sa Ia- urday, says the Globe Silver Belt.
 carload Of this ore will net fro of Sf.o00 to Sf 200