. Bulletin - United States National Museum. Science. THE MINERALS OF IDAHO 361 cite. The analcite occurs as transparent colorless crystals up to 2 mm. in diameter coating a fracture in a fine granitic rock. CUSTER COUNTY Analcite is common in association with the mordenite, described in detail above, from the locality south of Challis, as noted in a preceding paper. The analcite occurs as single crystals and groups of aggregated crystals embedded near the centers of the larger masses of cottony mordenite and as crusts and druses of crystals lining cracks in the adjacent rock or filling gashes
. Bulletin - United States National Museum. Science. THE MINERALS OF IDAHO 361 cite. The analcite occurs as transparent colorless crystals up to 2 mm. in diameter coating a fracture in a fine granitic rock. CUSTER COUNTY Analcite is common in association with the mordenite, described in detail above, from the locality south of Challis, as noted in a preceding paper. The analcite occurs as single crystals and groups of aggregated crystals embedded near the centers of the larger masses of cottony mordenite and as crusts and druses of crystals lining cracks in the adjacent rock or filling gashes in the mordenite which probably have resulted from solution of calcite, as shown in the upper right picture of Plate 10. Individual crystals of the anal- cite reach an extreme diameter of 14 mm. Where free from inclu- sions the analcite is clear and colorless, but the crystals commonly inclose fibers of mordenite and grains of quartz giving them a milky. 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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