 | | 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...11 cm long. Figure 16. Location of the Texas quarries, Texas, Maryland. Figure 17. Location of the... Figure 79. Hornfels (layered) underlain by diabase (massive) at the Manassas quarry, near Manassas;...Table 1. Minerals of the northern Virginia diabase quarries. xi INTRODUCTION "There was no talke/ |  | | 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...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...the slate quarry at Kaub, Rhineland-Palatinate, Germany. Good chalcopyrite specimens consisting of small |  | | Journal (article/letter/editorial) | | terrestrial sand and gravel deposits, colored red by hematite and commonly referred to as Triassic red beds...squeezed between layers of rock, it formed sills of diabase, Dr. Peter B. Leavens is emeritus professor of...quarry. Sedimentary red beds are shown in green, diabase sills in red. The basins lie roughly on the boundary...Culpepper basin in northern Virginia. In Pennsylvania diabase, sills occur in a band across the southeastern...to come up the hills to attack them.) Several quarries (table 1) recover crushed stone from these sills |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...slavia), C aldbeck Fells (England), SEM , Eugui quarries (Spain) $10 v .2 2 /# 3 M essina m ines (So....minerals, (b) thin mats of serpentine and earthy red hematite with or without brucite, (c) serpentine plus secondary...adjacent to the sulfide occurrence, including thin hematite rinds on a few franklinite grains and a little...larger spherules are thus generally incomplete. Hematite, goethite, secondary rhombic calcite and quartz |  | | 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...Sulfides: pyrite, chalcopyrite; Oxides: magnetite, hematite; Carbonates: siderite. WEATHERING PRODUCTS: Hydrous...Pennsylvania are associated with intrusive Triassic diabase: the lead and zinc veins of Perkiomen and Phoenixville...scacchite, cotunnite; Oxides: tenorite, massicot, hematite, magnesioferrite Hydroxides: sassolite; Elements: |  | | 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...uaknown)16l,p.84)--Old Gross Quarry. Dolomite Harb e quarries (with variable amounts of calCite, phlogopite...13'45", 3 03 2 tt 0 opographic map). Ifaenetite, Hematite, Quartz (98(area ot 42 11'12",73 03'39")22;)....limestone quarries 74(42 21' 34·',73 22'12"--Cone Hill )--One quarry at this location. Two quarries 260 feet...Limo ite) Pit t,8(42 40'47",73 11'38")121) Marble Quarries area of 42 40'37 n ,73 11'02")114)--Twoquarries0 |  | | Report (issue) | | Tcnorite (Melaconitc) Massicot Minium Corundum Hematite (Spccularite) (Martite) (Turgite) Ilmenite Rutile...goethite, gold, graphite, gypsum, halloysitc, hematite, hornblende, hydrozincitc, illite, ilmcnitc, jarositc...rozentitc, sidcritc, silver, smithsonitc, specular hematite, steatite, talc, thuringitc, tinticitc, tremolite-actinolite... collophane, crandallite, francolite, gypsum, hematite, hemimorphitc, hydrozincite, lcpidocrocite, leucoxene...fergusonitc, florencite, gocthite, halloysite, hematite, hypersthene, iddingsite, ilmcnite, kaolinite |  | | Book (edition) | | opened or systematically vvorked, as in mines and quarries, the amateur is far better able to keep track...same. This explains why two iron oxides such as hematite and magnetite, both compounds of iron with oxygen...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 | | | Book (edition) | | opened or systematically worked, as in mines and quarries, the amateur is far better able to keep track...same. This explains why two iron oxides such as hematite and magnetite, both compounds of iron with oxygen...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 |  | | Book | | lustrous, though some which are coated by rutile or hematite are yellow or red and earthy; they are equant...different combinations of rutile, anatase, brookite, hematite and titanite (Philippe Beiley, personal communication...Alberene and Old Dominion quarries, Albemarle County. In these two soapstone quarries, tabular ilmenite crystals...distinguishing brilliant black "iron roses" of hematite from the very much rarer "iron roses" of ilmenite...the characteristic major associations of Swiss hematite iron roses are quartz, ortboclase, albite, rutile |  | | Report (issue) | | Gregory Herman6 and John Curran6 1A1-4G3 1. Diabase and Brunswick basalt in the Watchung zone 1A1-1F4...Apx-Apxiv Appendix 1. Diabase and Brunswick basalt in the Watchung zone 1A. Well 1 –- Diabase, Lambertville City....................... 1B. Wells 2 through 5 –- Diabase framework, East Amwell Township.................................................. 1C. Well 6 – Diabase, Hopewell Township............................................................... 1D. Well 7 – Diabase, East Amwell Township......................... |
|
