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| FEBRUARYJMAY 1994 NO. 1 & 2 MINERALS OF ROCKBRIDGE COUNTY, VIRGINIA D. Allen Penick, Jr. INTRODUCTION RockbridgeCountyhas...LocationmapofRockbridgeCounty,Virginia. reported from the county. Rockbridgecounty is one of the more prolific ...mainly of pink to red feldspar, green epidote,and g a y quartz along with other mine& in minor produced...~mberliteisa~kigneousintrusiverockfoundin for Rockbridge County. It wasrecognizedasadistinctmineral species in...the sampleshmtheMidvaleironminesouthofVesuvius. county. Kimberliteisconsideredthechiefsourcerock Inadditionto |
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| > ~' Bibliography of North American Geology 1952 and 1953 By RUTH REECE KING, VIRGINIA M. JUSSEN, JOHN...-----------In 1 3 11 383 ! BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY 1952 and 1953 By RUTH REECE KING...in the literature concerning the geology of the North American' continent, including Greenland, West Indies...in foreign journals are cited if they deal with North American localities· or are of a general character...with foreign areas. Articles by foreign authors on North America are included regardless of place of publication; |
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| Earth, Editorial and Design by T he Brown Reference Group pie ISBN O 7489 7935 2 NO i 07 04 18 Printed in...Mexico. Eight-sided crystals from the Traversella mine, Piedmont, Italy. .&. crystals. It can also be...are often replaced by pyrite. FACT FILE PYRITE Group: Sulphides Crystal system: Cubic Habit: Cubes,...quartz rather brittle. FACT FILE ROSE QUARTZ Group: Oxides Crystal system: Trigonal Chemical formula:...CHARACTERISTICS Rose quartz is a member of the oxide group of minerals. It is an oxide of silicon, and it gets |
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| of this here. Next we must consider a peculiar group of elements known as the imert gases. The first...appropriate and, indeed, these are linked with an (SiO4) group in the mineral forsterite. The chemical shorthand...about valencies tinctive (SiO4) and a bracket group would around the dis- result in forsterite ...because the phosphorus ion P°* the (PO,)3~ group the oxygen group in merwinite SOLUTION ion O*~ Notice...take the pure magnesium and iron members of the group of minerals known as olivines. These are called |
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| rocks________________________________ Glen Canyon group.___________________________________ Wingate sandstone_____-_-_...source to the south and southeast The Glen Canyon group in southeastern Utah consists of the Wingate sandstone...in broad northwestward-trending belts near the north limit of the respective units. Many determinations...Ranch Point 22 23 24 25 26 27 28 29 30 31 32 21 North Sixshooter Peak 20 Muley Twist 19 Muddy River...Mountain member Shmarump member 15 Lucky Strike mine 2 3 4 5 6 7 8 9 10 11 12 13 14 f>cb Monitor Butte |
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| 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...Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley Lambert extracted...1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's finest ilmenite |
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| Bibliography of North American Geology, 1950-1959 By RUTH REECE KING, ELISABETH S. LOUD, MILDRED CHALLMAN...GEORGIANNA D. CONANT INTRODUCTION This bibliography of North American geology lists publications that appeared...(including Alaska and Hawaii), the rest of the North American continent including Greenland, the West...material not included before, notably, a large group of reports prepared by and for the U.S. Atomic Energy...in foreign journals are cited if they deal with North American localities or are of a general nature, |
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| dictionary, especially the Dictionary Revision Group members and the Bureau's engineers, scientists,...panel of experts called the Dictionary Review Group. This group also examined the Society of Mining Engineers'...gratitude to the members of the Dictionary Revision Group: Robert L. Bates; V. A. Cammarota; M. Elizabeth... Norf Norfolk, England. N. of Eng North of England. N. Staff North Staffordshire Coalfield, England... Northumberland Coalfield, England. N. Wales North Wales. Pac Pacific Coast, U.S.A. Pat Patagonia |
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| regarding the divisions of Precambrian time in North America and elsewhere in the world The terms given...Development ¢ Effects of Glacial Erosion « Waterfalls 29; North Cascades National Park Geographic Setting 405 Geologic...Geologic History 412 Development of the North Cascades * North Cascade Rocks and Structures ¢ Glacial...Richard Baker, University of Iowa; Robert F. Biek, North Dakota Geological Survey; Robert R. Churchill, Middlebury...Park, Utah 10 Theodore Roosevelt National Park, North Dakota 4 Capitol Reef National Park, Utah 11 |
