Bisbee daily review., 1908-11-11
CRIPPLE CREEK ORE IS SOUGHT
 IN ALL PARTS
Discoveries of Gold In Forma-
 tons That Resemble Colo
 rado Camps, Arouse Great Interest Among the Public.
@v J. B. TomlinsOn.,

NA
 
 Ever since gold was found in the eorphories of the tertiary series of rocks. mining men and prospectors have been carefully noting the pro ,gress Of the mines operated in new districts which bear even a slight resemblance to mines of the Grippe Creek region. A general resume of the big mines of the many mining regions winch are more or less well known 10 the profession. will rot be out of place at this time, and to one who has tray eied over the mining sections of the west and observed, even in a general sort of way. 1t will be interesting to show to what extent we are indebted to the tertiary rocxs TOT a large pro portion of the gold and silver produc- ton during the past twenty-five years.
 While the large producers of Mex fco and South America have been turning out the metals for the past four centuries, 1t was not brought so forcibiy to mind, nor so generally un- Gerstood in close detail until the geolo- gist had studied the Cripple Greek dis drict and named the rocks in which the gold is found. Here gold is found principally in the phonolite and asso- ciated with the quartz phenocrysts, resulting from the siIification of the formation from whatever cause. On the Burns mine basalt agate-iasper rock that usually ran twenty to thir- ty ounces in gold, the blue fiourspar from the Pharmacist. the Deerhorn, Plymouth Rock, and indeed. all the mines of Globe Hill ran high in gold values. The Anna Lee pipe or Tense of ore which belongs to the Portland group. Is. so far, tue best illustration of what a chimney of ore looks like. This was 8 filled hole or cavity, and carried practically even values in gold from the surface 70 the deepest point mined. 1t contained pieces from ali the rocks found in the immediate vi cinity which were broken from the sides of the opening or had migrated along giines of least resistance from points near at hani. The decomposi- ton os the structure supplied the clay, and with the oxides of iron and mang anese cemented the material into compact mass.
 The Independence. Strong and Gran ite dikes bear a strong resemblance to each other, and are on the gran ite order; the two fast named assume the form of Assure more strongly than anything in the district. The Mary McKenny and Republic also as sume the appearance of a Assure vein; also the Victor, Lee, Smuggler, Buena Vista, Comet fracture, which are To- cated along one seam or ore-bearing ctrata
 There are many others of just as great importance, hut the ones named will serve to illustrate that while ali carry gold values in pay form, each has it's particular physical character istic, different in form to that of it's neighbor In Criple Creek mines the ore is still found going down in most instances, others ceased to be produc- tive at various depths, but if the con ditions are closely studied it Is read fly seen why this ,s true. The longer and more regular the fracture or seam the deeper the enrichment will be found to go,while superficial frac- turing and short lenses and shoots will play out at exceedingly shallow depth.
 Cripple Creek win be mimned prof itably fer many years to come, and there Is no camp in the world. thus far found, where enrichment Of the rocks of the tertiary series Is so wide spread or extends to so great depth.
 The mines opened in the state of Nevada from ToDopah to Rawhide are all closely related to the tertiary porphories; they are all of that age and series and exceeding geat richness is due entirely to and co-existent with the same general canse of enrichment of ores of the Cripple Creek district, the principle point cf difference being s- a L. ion, carry a larger proportion of silver values than the Colorado mines. It IS a notable fact that Cripple Creek, up to this tine, staads alone as being the oniy strictly goll-bearing ore-pro- 6ucing section of the tertiary series.
 In New Mexico the andesites and rhyoIites are found ir the mountains around Bland and Cuchiti mines here show the silver values predominating in the ratio of five to two, also in the NogolIons t is IropCtienally the same. It is in these mountains ID western New Mexico where the great est outcrop of this series Is fo1nd In tNe territory. Thcrp nave been sev- eral rflEors of dollars worth of silver gold bullion produced from the mines s,~eued here and there will be mil Hons more produced in the future, as inc cround has not yet been scratch ed even on the surface. when era and extent Of the porphory flow is consld- cred. The depth Is shown by the shaft on the confidence mine, to be at least ] 200 feet. The ore occurs in shoots and lenses in wide r1yoiite ffkes ranging easterly and westerly through inc andesite. The north south dikes carry lower values in sil- yer and gold. and ss yet have not uroved profitable for mining Such mines as the Last Chance, Deadwood, Deep Down. Maud g. Fanny. Richmond and the Consolidated, are all similar fu structure. and rich in the minerals Of siIver-goId. The cooney mine near the surface was worked for the rich ores Of copper. found in a large diorite dike; depth has resulted In changing the r1ire~ai cortepts to gold and sii- yer. contained in an Iron sulphide and 1uartz with lower copper values. This district is rapidly assuming great I'm portance by reason of the successful treatment of the ore with cyanide methods. This was introduced at the Chance mine, and is' being followed m bv others in the dlstrict where there are large high-grade bodies os ore opaned. for treatment. There viz bo large producing camp fn these rnounfaine in the near future Qppor- funstv for investment Is good, and men