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D. Gruen, Sons & Co. Gruen watch ad from 1917. In 1900 the corporate name became D. Gruen, Sons & Co. The new company became partially a Swiss company. The movements were no longer made in Glashütte, Germany, but in Switzerland again. 1903, a subsidiary was formed, “The Gruen Watch Manufacturing Company”, located in Biel/Bienne, Switzerland.
Quartzite is a very hard rock composed predominantly of an interlocking mosaic of quartz crystals. The grainy, sandpaper-like surface is glassy in appearance. Minor amounts of former cementing materials, iron oxide, silica, carbonate and clay, often migrate during recrystallization, causing streaks and lenses to form within the quartzite. [1 ...
Silver Mound. Silver Mound is in the town of Hixton, Jackson County, Wisconsin. Its sandstone was laid down long ago in the Cambrian Period, [4] like many other bluffs in the area. But in this sandstone a layer of very hard stone called silicated quartzite or orthoquartzite formed. Stone like this is fairly uncommon.
The unit is a thick sequence of massive quartzite beds, white to reddish or tan in color, 2 to 7 feet (0.6 to 2 m) thick. There are also scattered beds of sericite schist that become more numerous in the uppermost part of the formation, where the quartzite beds thin to 1 to 2 feet (0.3 to 0.6 m) in thickness and the beds are reddened by hematite.
Baraboo Quartzite is a Precambrian geological formation [ 1 ] of quartzite, found in the region of Baraboo, Wisconsin. While pure quartzite is usually white or gray, Baraboo Quartzite is typically dark purple to maroon in color, due to the presence of iron (hematite) and other impurities. [ 2 ] Baraboo Quartzite may display strata created by ...
171-191 South High Street is a pair of historic buildings in Downtown Columbus, Ohio. The commercial structures have seen a wide variety of retail and service uses through the 20th century, including shoe stores, groceries, opticians, hatters, jewelers, a liquor store, and a car dealership. Both exhibit early 20th century façades; 185-191 ...
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