 | | Book (volume) | | A Location Guide for Rock Hounds in the United States NEBRASKA This rectangular Great Plains state rises...overlooks both Colorado and Wyoming. The subsurface rock strata of the entire state are all undisturbed sedimentaries:...borderland from Sheridan Co. to the Wyoming line is good rock hunting country, especially along the southern slopes...of Crawford in Dawes Co. and the rather extensive rock beds east of the Orella railroad sta. ranks among... The Sandhills Museum in town is well worth the rock hunter’s visit. Draws, cuts and breaks in the hills |  | | Book (volume) | | publisher. Cover photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical...greater variety of minerals are found in Oxford County, alone, than anywhere else on Earth of comparable...than Maine's, as well. An area smaller than Oxford County in Murmansk Ob last, Kola Peninsula, Russia, has...clear to slightly blue topazes. However, San Diego County, California, is arguably the most important gem-pegmatite...Gerais, Brazil, better than those from the Harvard quarry in Greenwood? Are the morganites of Cerro de Urucum |  | | Book (edition) | | Co\·er photo: \\ 7 ulfenite, Rowley Mine, Maricopa County, 4 cm high specimen, Evan and Melissa Jones Collection...gemandmineralmuseum.arizona.edu) is located in the old Pima County Courthouse building at 115 North Church Avenue...on the market. The mines at Bisbee, in Cochise County, have produced large quantities of gem-quality...mineral stamp issued in 1992. At Morenci, in Greenlee County, gem-quality azurite was also commercially recovered...parallel to the grain. The Blue Ball Mine, in Gila County, has produced thousands of azurite nodules up to |  | | Journal (article/letter/editorial) | | assemblage and mineral chemistry in the crystalline rock would be only minimally influenced by these elements...deposits Magnetite Skarn Rhyodacite Hornblende-biotite porphyry Hornblende porphyry Gabbrodiorite complex...normally zoned plagioclase (An90–30), poikilitic hornblende, Fe–Ti oxides (magnetite and ilmenite, both with...orthopyroxene is often found in the core of poikilitic hornblende. Accessory minerals consist of apatite, zircon...the gabbrodiorite “cumulate” has more abundant hornblende and pyroxene, and less plagioclase (more calcic |  | | Book | | MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described |  | | Report (issue) | | ____________________ Geophysics_____________________________ Rock magnetism ____ Geomagnetism _____ Petrophysics _______...Engineering geologic mapping ____________ Research in rock mechanics ___________. Research in geologic hazards...of geochemical data for the Chignik and Sutwik Island I°x2° quadrangles by D. E. Detra showed a trend...found yet. Mineral-resource studies in the Shining Rock Wilderness Area, North Carolina Reconnaissance...that the Shining Rock Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly |  | | Report (volume) | | ____________________ Geophysics_____________________________ Rock magnetism ____ Geomagnetism _____ Petrophysics _______...Engineering geologic mapping ____________ Research in rock mechanics ___________. Research in geologic hazards...of geochemical data for the Chignik and Sutwik Island I°x2° quadrangles by D. E. Detra showed a trend...found yet. Mineral-resource studies in the Shining Rock Wilderness Area, North Carolina Reconnaissance...that the Shining Rock Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly |  | | Book (edition) | | mine, Si/County, Arizona. Smithsonian Institution. Fornzer!y in...The Bisbee District, Cochise County 64 The Tombstone District, Cochise County 70 The Mammoth-St. Anthony...Anthony Mine, Tiger, Pinal County 78 Uranium and Vanadium Deposits 80 Monument Valley 81 - • Vll The Cameron... Apache County 435 Cochise County 436 Coconino County 437,438 Gila County 439 Graham County 440 Greenlee...Greenlee County 441 La Paz County 442 Maricopa County 443 Mohave County 444 Navajo County 445 Pima County | | | Book (edition) | | mine, Silver district, Trigo Mountains, La Paz County, Arizona. Smithsonian Institution. Formerly in...Bisbee District, Cochise County 64 70 The Tombstone District, Cochise County The Mammoth-St. Anthony Mine...Mine, Tiger, Pinal County Uranium and Vanadium Deposits 80 Monument Valley 81 63 78 il S: The Cameron...Apache County — 435 Cochise County 436 Coconino County 437, 438 Gila County 439 Graham County Greenlee...Greenlee County 440 441 LaPaz County 442 Maricopa County 443 Mohave County 444 Navajo County 445 Pima County |
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