Page:The Journal of geology (IA journalofgeology11893univers).pdf/39
zinc spelter are displayed with the ores from which they are derived. A model of the dressing works of the Saint Joseph Lead Company and a relief map of Iron Mountain, colored to show its geology, are interesting features of the exhibit. The coal industry of the state is also represented, together with a number of building stones, ochres, etc., and a fine collection of calcite and other mineral specimens from the lead and zinc mines.
The South Dakota exhibit consists largely of tin ore, auriferous quartz, mica and some argentiferous galena, and is essentially a Black Hills exhibit. "Lode" tin ore and stream tin, as well as pig tin manufactured from the ores, are exhibited in large quantities. A large column of tin ore, from the property of the Harney Peak Consolidated Tin Company, contains a placard stating that the capital invested is $3,500,000, a fact it is difficult to understand they should wish to make so prominent in view of the unproductive history of their operations. The auriferous quartz is a good exhibit and characteristic of the quartz deposits of the Black Hills. Some beautiful pieces of Arizona silicified wood, which were polished in Dakota, are exhibited, but in lack of the proper explanation as to their source, they are misleading, as they suggest Dakota as the region from which they were derived.
Kansas makes a very good exhibit of lead and zinc ores with the pig lead and zinc spelter derived from them. The exhibit also includes a display of rock salt, gypsum, building stones and other minor products. The exhibit is small, but it is characteristic of the state and is well arranged.
Montana makes a good exhibit as far as it goes, but many localities and many important deposits are not represented. The best exhibits are from the great mining camp of the state, i. e., Butte City. The great copper and silver interests of this district—especially the former—are well presented, and large quantities of sulphide copper ores, and the metallic copper made from them, are displayed. A quantity of gold quartz, and an interesting collection of gold nuggets are also a part of this exhibit.