. Bulletin - United States National Museum. Science. THE MINERALS OF IDAHO 265 CUSTER COUNTY Azurite accompanies malachite in the oxidized ores of the Alder Creek district. It is not an abundant mineral in the deposits, but is very generally present in the different stopes. Locally it is well crystallized in tabular Else- where in the county this mineral appears in the oxidized portions of the veins, but is nowhere abundant enough to constitute an ore. In the Bayhorse district it occurs generally in small cavities in partly oxidized tetrahedrite ore. Minute crystals incrust tetrahe
. Bulletin - United States National Museum. Science. THE MINERALS OF IDAHO 265 CUSTER COUNTY Azurite accompanies malachite in the oxidized ores of the Alder Creek district. It is not an abundant mineral in the deposits, but is very generally present in the different stopes. Locally it is well crystallized in tabular Else- where in the county this mineral appears in the oxidized portions of the veins, but is nowhere abundant enough to constitute an ore. In the Bayhorse district it occurs generally in small cavities in partly oxidized tetrahedrite ore. Minute crystals incrust tetrahedrite and chalcopyrite in specimens from the Bull of the Woods mine (Cat. No. 56518, ) and thin coatings occur with malachite and bindheimite in partly oxidized galena-tetrahedrite ore from the Ramshorn mine (Cat. No. 51863, ). A specimen from the No. 3 tunnel, Silver Bell mine, Bayhorse district, shows thin botryoidal coatings and drusy crusts and seams of azurite with oxidizing tetrahedrite. Small crystals in spongy lim- onite surrounding tetrahedrite in ore from the Skylark mine were measured and are illustrated in the drawing, Figure 71. These gave the following measurements:. 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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