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Show Fissure Zone At King David Mine To Be Reached Soon, Opinion Of Company Official The objective fissured zone at the King David Mining property, situated in the San Francisco mining min-ing region west of Milford, should be reached sometime this month, Paul H. Hunt, vice president and general manager, states in a letter which is being sent out to stockholders. stock-holders. Mr. Hunt, well known engineer and former state senator, outlines recent developments at the property pro-perty and the objective which is being sought in the present campaign cam-paign of developments. His letter let-ter follows: "In the past three months we have made excellent progress in the north crosscut from the Drum shaft on the 750 foot level. We have also driven about 125 feet south from the shaft on this same level to cut the Drum and Emporia Em-poria fissures, both of which outcrop out-crop wholly within King David grounds. Considering the high temperature and long tram in the north crosscut development, a monthly advance of 200 feet is very good. "In this development in the north crosscut in the past three months, we have found the geology geo-logy has checked very closely with that on the surface. We cut a porphyry dike on June 25th which on the surface is about 10 feet wide and on the 750 foot level (about 1,300 feet below its outcrop) out-crop) was 35 feet wide. This porphyry por-phyry was a typical picrite of fer-rite fer-rite dike so commonly found near ore bodies in all of the mining districts, dis-tricts, and carries traces of gold and silver, the same as is usually found in such dikes, "Since cutting the porphyry, we have cut two minor fissures which on the surface are about 5 feet wide, lying between the porphyry and the main shear zone. Underground Under-ground we found these two minor fissures to be the same distance from the dike as they were on the surface but. each of them was about 20 feet wide. The mineralization mineral-ization in these two minor fissures fis-sures has been very interesting as an indicator of what may be expected ex-pected in the main shear ahead of us. Distant 200 to 300 feet from the shear, they would contain the more volatile portion of the mineralizing solutions which would escape outwardly from the main shear zone and pass through the bedding planes and cracks of the intervening limestone. If this shear zone was completely sealed with' quartz we might expect some of the more viscous constituents of these solutions, that is, quartz, barite and the ore sulphides to be forced out laterally into the hanging hang-ing wall limestone, some of this more viscous portion, perhaps reaching as far as the minor fis sures in the hanging wall. Inasmuch Inas-much as the shear zone at this place is about 200 feet wide, it is impossible to expect such a wide zone to be completely sealed with quartz and ore sulphides. "In these two minor fissures, we have found the limestone breccia brec-cia to be almost completely altered alter-ed to calcite and heavily impregnated impreg-nated with iron, both sulfide and its oxidized products, limonite. A great deal of the broken limestone is altered to talc (steatite, a hydrous hy-drous magnesium silicate) there is considerable manganese and a small amount of quartz. All these gangus minerals, with the exception excep-tion of quartz, are quite liquid portions of the gangus minerals associated with ore deposition. Quartz is very seldom found, and especially in a thick limestone country as this is, in any larger amounts, except intimately associated as-sociated with ore. Manganese is nore volatile than quartz, that is, it will travel farther from the ore, but in this district particularly, manganese is intimately associated asso-ciated with ore; in the main vein any dock showing appreciable amounts of manganese, when broken open will show lead and zinc. "The presence of large amounts of talc is coming to be considered very important as an ore indicator as magnesian waters are known to be almost a universal constituent of mineralizing solutions. "To the eastward of where we shall cut the main fissure the ore (Continued on last page) King David Mime (Continued from first page.) solutions have been forced out into in-to the bedding planes on the hanging hang-ing wall side of the fissure for distances of one hundred feet or more and show quite a bit of disseminated dis-seminated ore in these bedding replacements. re-placements. In addition there are numerous ore showings in the foot-wall of the fissure at the surface. sur-face. Recently some operatons, a few hundred feet to the westward of where we shall cut the main shear zone, in a winze now a little over two hundred feet deep has shown more or less ore all the way down, at places reaching a width of over four feet. This ore is of an excellent grade, running 35 to 40 per cent in Tead with more than an ounce of silver to each 1 per cent of lead, and with good gold values. "We are thus crosscutting our objective about midway between two ciuite impressive ore showings at the surface and the ore should be more or less continuous between be-tween these ore showings. This hag given us great encouragement that we shall hit an ore shoot in cross-cutting the fissure." o |