 | | Report (issue) | | Loudoun County 143 Prince William County 149 Diabase quarries of northern Virginia 155 CAPTIONS Illustrations...Complex at Ilchester, Maryland. Figure 6. Triassic diabase dike forming a ridge north of Route 7 near Dranesville...the Bok Asbestos -mine* Hollofield, Maryland. Figure 14. Road leading to the Bok Asbestos mine, Hollofield...looking west. Figure 15. Anthophyllite asbestos from the Bok Asbestos mine, Hollofield, Maryland. Specimen...11 cm long. Figure 16. Location of the Texas quarries, Texas, Maryland. Figure 17. Location of the |  | | Journal (article/letter/editorial) | | from the Old Lurzenbach mine, Gosenbach, Siegen, Germany. Jack Halpern specimen, Jeff Scovil photo. distribution...across are occasionally encountered in the diabase quarries of Fairfax County and the Goose Creek quarry...collectible silicates are found at the Jeffrey mine, Asbestos, Quebec. Specimens containing chalcopyrite crystals...crystals have been found in the mines of Freiberg, Saxony; Dreislar, Sauerland; and in siderite-sulfide veins...veins at Niederhovels and Willroth, Siegerland, Germany. Attractive calcite plates studded with chalcopyrite |  | | Report (issue) | | Amphibole Group Cummingtonitc Trcmolite Actinolite (Asbestos) (Byssolite) Basaltic hornblende Hastingsite Hornblende...Group Antigorite (Williamsite) Chrysotile 8 (Asbestos) Rctinalitc (Iddingsitc) Halloysitc Metahalloysitc... anaicime, anthophyllite, apatite, aragonite, asbestos, azurite, barite, bornitc, calcite, ccrussite... ankcritc, apatite, aquamarine, arsenopyritc, asbestos, augite, autunite, bastnaesitc, bavenitc, bertrandite...BLAND COUNTY: agate, aragonite, arsenopyrite, asbestos, barite, calcite, cryptomclanc, dolomite, fluorite |  | | Book | | titan te i8 r.lative~1 large SJl.sunts. Grgit. Quarries (76(42 15'58",73000'43tt)~ 2 16'11",73 01'U tt...biotite occurs in the calcite. Anthophlllite. Asbestos, TIle (31(northwest part ot Dalton tOWDship-;Gear...522l~--small amounts mined trom 1901 to 1906. The asbestos tormed in pockets in the talc and the two were...pyrite, magnetite, hYalite, chalcedony, talc. asbestos. and other minerals. Prase (doubttul identification)--beautitul...actinolite. Ilso see Windsor, Delton (Mingral Section). Asbestos Tremo1ite Mine (53(general area of 42 26'48",73 |  | | Book (edition) | | opened or systematically vvorked, as in mines and quarries, the amateur is far better able to keep track...system in 1735, followed by Friedrich Mohs of Germany, who published his in 1820. In 1758, Axel Frederic...Wilhelm Scheele (1742-1786) in Sweden, and in Germany by Martin Heinrich Klaproth (1743-1817), the merits...carried out by Eilhard Mitscherlich (1794-1863) in Germany; these did much to explain hitherto puzzling variations...and nephrite. In some instances, as in tremolite asbestos, the fibers are parallel and separable and it | | | Book (edition) | | opened or systematically worked, as in mines and quarries, the amateur is far better able to keep track...system in 1735, followed by Friedrich Mohs of Germany, who published his in 1820. In 1758, Axel Frederic...Wilhelm Scheele (1742-1786) in Sweden, and in Germany by Martin Heinrich Klaproth (1743-1817), the merits...carried out by Eilhard Mitscherlich (1794-1863) in Germany; these did much to explain hitherto puzzling variations...and nephrite. In some instances, as in tremolite asbestos, the fibers are parallel and separable and it |  | | Book | | Alberene and Old Dominion quarries, Albemarle County. In these two soapstone quarries, tabular ilmenite crystals...6 X 1.8 x 2.8 cm (Pekov, 1994a). Malad-Kurar quarries, Mumbai [Bombay], Maharashtra. Ilvaite occurs...in the 1960s (Birch, 1999). IMITERITE EUROPE GERMANY Ramsbeck district, Nordrhein-Westfalen [Sauerland]...the jamesonite mats (Zacek and Oplustil, 1992). GERMANY Kuhberg quarry, Neumiihle, Thiiringen. The Kuh...more generally marketed (1992: 276, 435). EUROPE GERMANY Kausersteimel mine, Kausen [Siegerland], Rheinland-Pfalz |  | | Report (issue) | | and sheared lavas near Mothecombe. { Diabase and INTRUSIVE. diabase-hornfels. .!ltered rock ? proterobase...LITERATURE. In Lysons' ' Magna Britannia ' the slate quarries near Ivybridge and Cann quarry are referred to...schiefer, Andalusithornfels ; also the altered diabase and schal stein, and the presence of typical adinole...for instance : in the vicinity of the masses of diabase south of · Whympston House, bet�reen Modbury and...the Lower Devonian is incomplete, as many of the diabase patches shown on the ·map have not been examined |  | | Report (issue) | | limestones the shales, etc., most. effect of a diabase dike may be practically nil, where under other...Zeolites are of common occurrence in the Triassic diabase quarries of Adams, Lancaster, Berks, and ; Hydrous...Pennsylvania are associated with intrusive Triassic diabase: the lead and zinc veins of Perkiomen and Phoenixville...sandstone, shale, conglomerate, and intrusive diabase in the northern part. Low hills; a southern extension...1916. Anna I. Jonas, The Precambrian and Triassic diabase in eastern Pennsylvania: Bull. Am. Mus. Nat. Hist |
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