. Bulletin - United States National Museum. Science. 204 BULLETIN 131, UNITED STATES NATIONAL MUSEUM found to be tetragonal, isomorphous with and closely resembling cassiterite crystals. The basal plane is very common, and the pre- vailing forms are like Figures 37 and 38. Many of the smaller crystals have merely the steep pyramid v(301) as in Figure 37. The best crystal is one one-hundred-and-fiftieth of an inch long with the form and proportions shown in Figure 39. The forms noted are as follows: a.(100) c(001) c(101) i>(3Ql) x(332). Please note that these images are extracted from scanne
. Bulletin - United States National Museum. Science. 204 BULLETIN 131, UNITED STATES NATIONAL MUSEUM found to be tetragonal, isomorphous with and closely resembling cassiterite crystals. The basal plane is very common, and the pre- vailing forms are like Figures 37 and 38. Many of the smaller crystals have merely the steep pyramid v(301) as in Figure 37. The best crystal is one one-hundred-and-fiftieth of an inch long with the form and proportions shown in Figure 39. The forms noted are as follows: a.(100) c(001) c(101) i>(3Ql) x(332). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
