| 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...Maryland. Figure 35. Graphic granite (intergrown quartz and microcline) from the Mount Saint Clement College...Cfr°m Singewald, 1928). Figure 40. Locations of quartz mines in Howard and southern Baltimore counties |
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Moore, T.P. (2016) Moore's Compendium of Mineral Discoveries 1960 - 2015 Vol. 2. Mineralogical Record Inc. |
Book |
| Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...Alberene and Old Dominion quarries, Albemarle County. In these two soapstone quarries, tabular ilmenite crystals...major associations of Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially |
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Dietrich, R. V. (1970) Minerals of Virginia. Research Division Bulletin 47. Virginia Polytechnic Institute |
Report (issue) |
| Silicates Quartz (Rock Crystal) (Amethyst) (Green quartz) (Cairngorm) (Blue quartz) (Rose quartz) (Star...(Star quartz) (Chalcedony) (Agate) (Prase) ' (Onyx) (Jasper) (Opal) Tridymitc Qf-Christobalitc Phcnakirc Olivine... paragonite, pyrite, pyromorphitc, pyrrhotite, quartz, rozentitc, sidcritc, silver, smithsonitc, specular...phosphuranylite, pyritc, pyrochlore, pyromorphitc, quartz, rhabdophanc, rutile, samarskitc, scapolitc, scoroditc...limonite, magnetite, psilomelane, pyritc, pyrolusite, quartz, sphalerite, staurolite. ARLINGTON COUNTY: galena |
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Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia |
Report (issue) |
| get even such common birth), later, minerals as quartz, hornblende, and feldspar determined, and it is...Pegmatites (including "pneumatolytic" veins and many quartz veins) A. Silicic (granitic pegmatites) B. Alkalic...limestones the shales, etc., most. effect of a diabase dike may be practically nil, where under other...PRIMARY MINERALS: Silica: Trisilicates, feldspars: quartz, pyroxenes: silicates, orthoclase, microcline...almandite; hydroxy-: HYDROTHERMAL METAMORPHS: quartz, chalcedony, opal; Orthosilicates, hydroxy-: Silica: |
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Sinkankas, John (1964) Mineralogy for Amateurs (1st ed.) Van Nostrand Reinhold Co. |
Book (edition) |
| objects all things considered, or Japanese twins of quartz which, to the beginner, may look little different...opened or systematically worked, as in mines and quarries, the amateur is far better able to keep track...one because two of its minerals, feldspar and quartz, are the most abundant of all minerals. ‘This...well-known polymorphs are tridymite, cristobalite, and quartz, all of which are silicon dioxide, and rutile...such it has practically the same composition as quartz, yet it always occurs in formless masses which |
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Sinkankas, John (1964) Mineralogy for Amateurs (1st ed.) Van Nostrand Reinhold Co. |
Book (edition) |
| objects all things considered, or Japanese twins of quartz which, to the beginner, may look little different...opened or systematically vvorked, as in mines and quarries, the amateur is far better able to keep track...one because tvvo of its minerals, feldspar and quartz, are the most abundant of all minerals. This class...well-known polymorphs are tridymite, cristobalite, and quartz, all of which are silicon dioxide, and rutile,...such it has practically the same composition as quartz, yet it always occurs in formless masses which |
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Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
Book |
| l28)--One mile north of the center of Alford. Vein of quartz, aeveral feet wide, traversing limestone and con~aining...(Coles Brook limestone) with acoessory plagioclase, quartz, diopside, tremolite, and chondrodite, and secondary...Handed lineise (76l42017'08 t' ,73 02'34"}65)--_Quartz_-plagioclasemicrocline.bioti te gneiss. Acc>essory...titan te i8 r.lative~1 large SJl.sunts. Grgit. Quarries (76(42 15'58",73000'43tt)~ 2 16'11",73 01'U tt...9(locality uncertain)364.p.ll)--aagnetite-auscovit.-quartz sc ist. Across state line on mountain ~oad li |
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