OCR Text |
Show Montana Crystals. The crystals from Montana are found in veins from four to seven feet wide, probably a hundred feet deep and several miles long. They have not, however, the absolute abso-lute perfection that characterized the Iceland specimens during some centuries cen-turies after their discovery, but it is hoped that better ones may be obtained by more careful methods of mining. Some of them are slightly cloudy, and the majority, although perfectly clear, show interior cleavage. The bureau of standards has made an encouraging en-couraging report upon the specimens submitted to It. |