 | | Journal (article/letter/editorial) | | microscopical study of the interstitial chlorite in the diabase-minverite series of south-west England. These disprove...the comparatively low degree of alteration, the diabase-minverite series of North Cornwall and South Devonshire...minerals such as zeolites, calcite, analcite, and albite associated with it cannot be contemporaneous. Indeed...have probably crystallized a little earlier than albite, analcite, etc., and perhaps even overlap the chlorite...of chlorite from the chemical analyses of the diabase and minverite respectively. The results quoted |  | | Report (issue) | | Loudoun County 143 Prince William County 149 Diabase quarries of northern Virginia 155 CAPTIONS Illustrations... List of Figures Figure 1. Index map showing region covered in this report. Stfaded area is covered...Figure 2. Block diagram of the Washington, D.C. region showing physiographic provinces and major geographic...Complex at Ilchester, Maryland. Figure 6. Triassic diabase dike forming a ridge north of Route 7 near Dranesville...and locations of mines in the Soldiers Delight region, Baltimore County, Maryland. Adapted from Pearre |  | | Journal (article/letter/editorial) | | Triassic Diabase, Coopersburg, Pennsylvania Abstract: Veins, principally of prehnite, occur in diabase near...Pennsylvania. Early formed vein minerals are pyroxene and albite (An < 5) in which most of the crystals are choked...choked with fluid inclusions. Commonly, the albite has inclusion-free rims of the same composition as the...Minor quartz and calcite occur with the prehnite. Diabase near the veins shows three zones of alteration...chlorite. In the third zone the texture of the diabase is preserved, but hypersthene is altered to chlorite |  | | Journal (article/letter/editorial) | | poor color, scant spessartite and beautiful clear albite crystals (cleavelandite) in just a few hours. So...a good picture. The Fairfax-Loudon County diabase quarries are nearly all closed to collectors. Here |  | | Journal (article/letter/editorial) | | farming, is that connecbd with the diabase- or ' granib '-quarries at Porth Downloaded from http://jgslegacy...slates. on Trwyn Ellen and Trwyn Llwyd, but these quarries are now abandoned. The group consists of alternations...tramway-cutting which affords access to the diabase-quarries on Pen Clegyr. In this cutting the mudstones...the shore, though they may be seen in s m a l l quarries on the cliff above t~wll Llong. The dip of the...strike: there is one such deviation near the large diabase-mass of Pen Clegyr. Again, in its course of a few |  | | Book | | localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...Alberene and Old Dominion quarries, Albemarle County. In these two soapstone quarries, tabular ilmenite crystals...numerous crystal pockets, associated with small albite crystals; the platy, flattened-rhombohedral ilmenite...Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially stilbite), whereas...in Switzerland, it is only in the Maderanertal region of east-central Canton Uri that clefts bearing |  | | Report (issue) | | limestones the shales, etc., most. effect of a diabase dike may be practically nil, where under other...pyroxenes: silicates, orthoclase, microcline, albite, oligoclase; Meta- hornblende; Orthosilicates...Trisilicates, feldspars: orthoclase, microcline, albite, oligoclase, andesine; Metasilicates: Orthosilicates:...Zeolites are of common occurrence in the Triassic diabase quarries of Adams, Lancaster, Berks, and ; Hydrous...Trisilicates, feldspars: orthoclase, microcline, albite, oligoclase; Mela- m pyroxenes: spodumene;' amphiboles: |  | | 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...limestone quarries 74(42 21' 34·',73 22'12"--Cone Hill )--One quarry at this location. Two quarries 260 feet...completely overgrown. The rock is a calcareous quartz-albite-muscovite. chlorite-clinozoisit. schist, and i8...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) | | quartz, stilbite, troilite, vivianite. HENRY COUNTY: albite, almandine, amethyst, andesine, andradite, anthophyllite...thenardlte. LOUDOUN COUNTY: actinolitc, adularia, agate, albite, andraditc, anhydrite, apophyllite, aragonite,...controlled is shown by such features as vcinlets of late albite within perthite. .MINERALS OF THE AMELIA DISTRICT—Data...considered to be possibly in error. Acrinolite Albite, calcic Albite, sodic (other than cleavelandite) Allanite...A R,a r,a R,a r,a A,A Oligoclasc (& oligoclasc-albite) (var. moonstone) Olivine A,A r,a a,C r,R Phcnakitc |  | | 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....occurrences scattered throughout the Franklin-Sterling region (Cummings, 1978, 1988). The oxidation paragenesis...when several diabase quarries were opened in and near St. Peters in 1885. The diabase quarries produced paving...encountered. Drilling along the drift showed that the diabase was more than 30 meters below the gneiss footwall |  | | 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......................... |  | | Book (edition) | | opened or systematically worked, as in mines and quarries, the amateur is far better able to keep track...called perthite which consists of microcline and albite feldspars at low temperature but is a uniform crystalline...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 vvorked, as in mines and quarries, the amateur is far better able to keep track...called perthite which consists of microcline and albite feldspars at low temperature but is a uniform crystalline...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 |  | | 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 |
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