 | | Journal (issue) | | Finger) and LKA Emeralds, Hiddenite, Alexander County, NC Go On Public Exhibit in New York City. Emeralds................................... 2 Independence Mine, ................................................................................. 3 Little Three Mine,.................................................................................... 3 Cryo-Genie Mine ....................................................................................... 5 Black Mountain pegmatite ................................... |  | | Book (volume) | | NORTInHIwo AME A Volumes John Sinkankas _ GEMSTONES OF NORTH AMERICA In Two Volumes ® Volume I Gemstones, of...of all the mineral treasures to be found in North America, are perhaps the most fascinating—and the...worthy of the name. Some, like the emeralds of North Carolina, the colorful and fabulous tourmalines and...above all, easily read and understood, GEMSTONES OF NORTH AMERICA, Volumes I and II, will be welcomed as a...abroad are becoming so scarce and expensive that North America has developed into a major exporter rather |  | | Book (edition) | | Epidote, etc Axinite 282 Danburite, lolite 286 Mica Group Scapolite Group 287 292 293 286 Nephelite... III. Crystalline 468 B. Containing Feldspar, Mica, Leucite, Nephelite, Sodalite, or other related...Alkali-bearing a. b. 469 species 469 Potash-Feldspar and Mica Series Potash -Feldspar and Hornblende or Pyroxene...or without Augite 479 e. Soda-Lime-Feldspar and Mica Series 480 /. Soda-Lime-Feldspar and Hornblende...scribed on mica or a glazed card, and graduated. The arms might but for also be made of stiff card mica, bone |  | | Book (edition) | | dodecahedron. The brownish-black mineral in the mica from Pennsbury, Pa., is magnetite in this form (f...hornblende and pyroxene, and of various kinds of mica are also at times observed associated in parallel...described a similar occurrence from "Specimen Mountain," in the Yellowstone Park ; the form is shown...minerals, appearing, for example, in the Pennsbury mica; quartz is also often mechanically mixed, as in...varieties of gypsum, talc, etc. the is to folia ceous. Mica is a striking structure said be easily separable |  | | Book (edition) | | ^ fe o -• vO y MINERALOGY AND MINING. Mine Accidents —Ventilation — Ore Dressing, Etc. DESCRIPTIVE...lific of valuable treats and advice." PRACTICAL MINE VENTILATION. WILSON. For the Use of Mining Engineers...above, there is also the department of Economic Mine) alogy, which is not here and (3) in the coarser...dodecahedron. The brownish-black mineral in the mica from Pennsbury, Pa., is magnetite in this form (f...hornblende and pyroxene, and of various kinds of mica are also at times observed associated in parallel |
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