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Show The DESERET SAMPLER, Fri., Aug. 1, 1969 (Continued from Page I) This process is continuous, varying only in intensity and degree of coloring mineral content which helps to account for the variations of color, types of agate handing, and crystal sizes. The outer shell is rhyolite; however, it has become reinforced with more silica and other minerals, making it stronger than the rhyolite matrix surrounding the .geode, and more resistant to erosion and disintegration. Therefore the rhyolite which surrounds the geode erodes into a pink clay. The geode then is freed from the rhyolite rock. At the Dugway locality some geodes have keen transported some distance from their place of origin and are found in smooth gravel beds often associated with a brown sand. Ceodes found in gravel are usually smooth on the outer surface. The Dugway geode varies in size from alratit one-ha- lf inch to over three feet in diameter. The spherical shape has seams or striatums on its outer surface somewhat like the stitchcracks which were ing on a baselMtll. The striations are agate-fille- d caused by the cooling referenced previously. These geodes vary widely in size from place to place at the Dugway location. Some are solid inch agate (nodules); some are filled with quartz crystal up to one-halong; some have amethyst crystals; some have lwuds of agates and crystals; some have a solid center composed of a common type opal. It should also be pointed out that the aate and crystals of other minerals are still developing within the geode. HE m m m a m mm m Use Our Easy mm mam mm m a am m m m m Plan! Lay-Aw- ay For Girls Jr. Petite and Little Big DARLING DEBS lf Giris Cbse-Ou- ts Cuties Styles to $9 DRESSES SHOES Values to 8.00 LADIES $2250 few years ago geodes, which had been brought to the surface through the elements of weathering, could be found lying upon the surface. Now one must labor to find them. The geodes are from sis inches to six feet deep, and possibly deepA 988 0 v , ws 88 6.00 Sizes 3 to 14 New er beneath the surface. The material surrounding the geodes may le sand and gravel, disintegrated rhyolite, clay, or a mixture of all three. Large rocks of rhyolite may be encountered which often discourages further digging. The three main digging tools include a shovel, a pick type rock hammer, and a short handled pick which has a point on one side and a scoop on the other. Successful safaris to the geode area may render one to two hundred pounds of geodes in one day; however, more often ten pounds would Ik an average amount. No two Dugway geodes are the same. The geodes found in Iowa and Illinois, as an example, often are very similar to each other. The Dugway geode may lie lined with clear, opaque, or drusy quartz crystal; bands of blue and white agate; solid white opal, agate or an altered rhyolite; or they may have amethyst or calcite crystals protruding from a lining of white or blue agate. Almost any combination of the above can be found. Because the Dugway geodes were covered by the great Pleistocene lake called Lake Bonneville, they were subject to both chemical and mechanical action for a considerable period of time. Evidence of this is illustrated by calcareous deposits on the outside of those geodes which have leen transported from their place of origin and by calcite crystals and calcareous material inside of other geodes. The geodes found in disintegrated rhyolite clay undoubtedly are still in their places of origin. They are found deeper (three to six feet deep) than the transported ones and usually contain less calcareous material on the outer or inner surfaces. Most Dugway geodes fluoresce a pretty green and yellow under the short or long wave ultraviolet light This is probably due to the calcareous coatings which are found on many geodes, and not the quartz or rhyolite. Periite or pearlstone is often found in association with geodes; in fact when one finds periite he will usually find a geode. Periite, like a geode, is an unusual form of cooled siliceous lava spherical in form and usually in the same size range. However, when cracked open, all resemblance to a geode is lost in the white marbled black core which reminds one of fractured obsidian. The fracturing probably occurred during the cooling of the lava. The Dugway geode can be cut with a diamond blade saw along the longitudinal axis to obtain two matched halves. The saw marks are then removed, preferably, on a lapidary wheel using 220 mesh abrasive grit. When the saw marks are removed, additional grinding is necessary with finer grits such as 320 before polishing with a tin oxide compound on a felt wheel. Each person uses a different technique, however it should not take more than thirty minutes to grind and polish one geode. JANTZEN SWEATERS Ladies 6,1,1 PANTIES FANCY PANT,ES short-handl- Reg. ! Adler JANTZEN KNEE SOCKS SKIRTS Gjfi l00 $700,(100 in equipment, and a large nuinlicr of Vietnamese citizens have hem trained to operate it. Computer systems are now being used in the Treasury Department, the National Bank of Vietnam, and by the Directorate of Budget and Foreign Aid. Private industry is also moving into the computer field in Vietnam, with three major industries now awaiting computers which have proximately leen ordered. In terms of postwar planning, computers will help the VietGovernment namese identify existing manpower capabilities and prevalent academic and levels. They will also help in establishing a stable economy job-ski- ll to acquire needed resources. Computers will lie used to develop agriculture by determining how much fertilizer and high yield rice will lie needed annually. The Government of Vietnam hopes to reach a point soon where it will have enough hardware and trained personnel to establish its own central computer system. The existing capability is not sufficient to satisfy the growing demand. The United States has established a computer and data processing training program that not only provides technical training for Vietnamese employees of the U.S. Mission, but makes highly skilled graduates of the program available to the Government and to organizations using computers. High No Iron 58 One Table GIRLS SHOES Assorted Styles Values to $300 M44 pr. 2 pr. $8" Sizes Wi to 3 Use your Master Charge, BankAmericard, Walker BankCard INTERNATIONAL POCKET AM RADIO Solid State 8 Trans. Phone W-E- ar g. 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No irons I WING BOOTS Light as oxfords Tuff as steel SHOES Cuf 2 for 3.79 BELLBOTTOMS HAGGAR SLACKS look for every beach belle this summer, There's just take your choice. . . and suit yourself! 5M ea. 12.95 FOR BOYS South Vietnam is developing by providing information on a computer and data processing available resources and the nuin-le- r of import licenses required capability which will make a contribution to postplanning efforts. In the last three years the Government of Vietnam has purchased ap- $ "9 Six., g ta fM Vietnam Developing Computer Capability war 3 pr. I Sites 6 to 14 New The polished geode can lie used as a paper weight, end, or made into a desk set. For the imaginative craftsman, small pedestals can be cast of silver or brass and the geodes mounted on them. A variety of geode types also make an interesting collection. significant 109 49 147 3 pr. I 59' 24 North Main LEVI STRAUSS PANTS 4 , COO 3 H.D. Lee - Wranglers |