 | | Report (issue) | | DESCRIPTIVE MINERALOGY OF PENNSYLVANIA 104 Na 2Al 2 Si3 Oi .2H 2 O; SiO 2 47.4, A1 2 O 3 26.8, Na...Na 2 O 16.3, Lenni, Delaware County. Crystals. Eyerman, 1911, 11. Composition: Analysis: Fe 2 O3 CaO...Sp.gr LOCALITIES: Berks County: Birdsboro, and Gickerville; Delaware County: Leiperville, Lenni (druses...colorless crystals), Felton's farm (Chester), and Ward's quarry; Montgomery County: Sumneytown, and Perkiomenville...Philadelphia: Fairmount Park, Frankford, and Rit- enhouse quarry. SCOLECITE CaAl 2 Si3 Oi .3H 2 O MONOCLINIC |  | | Report (issue) | | OF THE DOE RUN AND AVONDALE REGION, CHESTER COUNTY, PENNSYLVANIA. By ELEANORA F. BLrss and ANNA I. JoNAS...The region discussed in this paper lies in Chester County, Pa., and is included in the eastern half of...showing location of Doe Run' and Avondale region, Chester County, Pa. line schists and gneisses . of the Piedmont...by the First and Second geological surveys of Pennsylvania are somewhat similar to each other. H. D. Rogers...schist." t Pennsylvania First Geol. Survey Rept., vol. 1, pp. 66-82, 122-183, 1858. z Pennsylvania Second |  | | Journal (article/letter/editorial) | | MINERAL ISOGRADS IN SOUTHEASTERN PENNSYLVANIA Hucn McKrNSrRy, H araaril IJniaersity, Cambrid.ge, M...increase in intensity of metamorphism toward the east and south has long been recognized; several authors...covered by the Philadelphia and Coatesville-West Chester Folios showing reported and observed occurrences..., Structural and petrologic studies in Duchess County, New York, Pt. II: G. S. A. Bulletin,47,775-850...8 . 874 MINERAL ISOGRADS IN SOUTHEASTERN PENNSYLVANIA 875 metamorphism: in the Piedmont region and |  | | Journal (issue) | | MONTHLY Contents for May, 1945 CHIPS FROM THE QUARRY .................................................By 1\1. D. Bogart .......................... PENNSYLVANIA AMETHYST ............................................................................... CHESTER COUNTY, PENN., RUTlLE .............................................. .... ......... CHIPS FROM THE QUARRY ............. . .................................in the southern part of the state (in N . Pinal County). The occurrence is quite interesting in that |  | | Report (issue) | | RICHARDSON .... CONTRIBUTING GEOLOGISTS GEOLOGY OF EAST MOUNTAIN, MENDON, VT., E. J. FOYLES .......... COMPRESSED...central sequence ....................... 14—Section east from Highgate Springs ........................ 15—Section...phyllite schist, Springfield, Vt . .............. 21—Quarry, granite-gneiss. Zenolith of Cavendish schist,... REPORT OF THE VERMONT STATE GEOLOGIST PAGE 32—East Mountain area showing section lines and topography...slopes 240 34—West-East section at north end, along line A-B .............. 241 35—East-West section along |  | | Journal (article/letter/editorial) | | Ct.; datolite from Springfield, Mass.; black tourmaline and cream-colord anthophyllite from the Pelham...asbestos mine. From Strickland's Quarry, Portland, Ct., terminated black tourmaline, quartz with albite inclusions...cryrstal. Mr. Knabe reported a trip to Leiper's quarry and Lenni, finding hematite at the latter. Mr....AMENICAN LTINERALOGIST Memphremagog, Canada (Logan's Bept. Geol.Canada, 1849). As recalculated lry Simpson |  | | Book (edition) | | Feldspar Group 8. Subsilicates Chondrodite Tourmaline Andalusite, Fibrolite, Cyanite .^7rT. Topaz...Saussurite Rocks 487 487 1. Garnet, Epidote, and Tourmaline Rocks 487 2. Hornblende, Pyroxene, and Chrysolite...rhombohedron, is wanting. For example, in crystals of tourmaline rhombohedral planes, and sometimes scalenohedral...dissimilarity in the two extremities of a crystal of tourmaline is connected with pyro-electric Three-sided prisms... are common in some rhombohedral species, as tourmaline. 4. Cleavage. Cleavage usually takes place parallel |  | | Book (edition) | | explained on pages 31, 32. / In figure 3, under Tourmaline, we have an instance of a hemihedral modification...near it, one extremity will be If a prism of tourmaline, after attracted, the other repelled, thus indicating...delicately suspended magnetic needle. The prisms of tourmaline have different secondary planes at the two extremities...property, especially boracite and topaz, which, like tourmaline, are hemikedral in their modifications. Boracite...? What is a pyro-e.lectric 1 What is said of tourmaline ? wha of topaz and boracite ] SPECIFIC GRAVITY |  | | Book (edition) | | explained on pages 31, 32. In figure 3, under Tourmaline, we have an instance of a hemihedral modification...pyro-electric, from the and electric. If a prism of tourmaline, after being heated, be placed on a delicate...a delicately suspended magnetic The prisms of tourmaline have different secondary needle. planes at the...property, especially boracite and topaz, which, like tourmaline, are Boracite crystallizes in hemihedral in their...gems ? What is a pyro-electric ? What is said of tourmaline ? wha cf topaz and boracite ? eating a mineral |  | | Journal (article/letter/editorial) | | Pontiac series of Quebec, the Dora formation of the east shore of Lake Superior, and certain rocks of Heron...the nature of the Lower Huronian, he refers to Logan's type section on the northeast coast of Lake Huron...Athabasca, Great Slave Lake, and the area between the east side of Great Bear Lake along the Copper Mine River...Classification of the Pre-Cambrian Formations in the Region East of Lake Superior," Congres Geologique International...E. Hopkins2 reports the succession in McArthur township of the Porcupine Gold Area as Late intrusives-Diabase |  | | Book (edition) | | explained on pages 31, 32. In figure 3, under Tourmaline, we have an instance of a hemihedral modification...Greek pur^ fire, and electric. If a prism of tourmaline, after being heated, be placed on a delicate...delicately suspended magnetic needle. The prisms of tourmaline have different secondary planes at the two extremities...property, especially boracite and topaz, which, like tourmaline, are hemihedral in their modifications. Boracite...compared with other ? What a is What is said of tourmaline ? wha gems pyro-electric ? of topaz and boracite |  | | Book (edition) | | Lowel, Mass., and S. S. Haldeman of Columbia, Pennsylvania. Ure’s Dictionary of Arts, Manufactures, and...result : — pages 81, 32. In figure 3, under Tourmaline, we have an instance of a hemihedral modification...Greek pur, fire, and electric. If a prism of tourmaline, after being heated, be placed on a delicate...delicately suspended magnetic needle. The prisms of tourmaline have different secondary planes at the two extremities... especially boracite and topaz, which, like tourmaline, are hemihedral in their modifications. Boracite |  | | Journal (issue) | | for diamonds, sapphires, rubies, zircon, topaz, tourmaline, garnets, quartz and many other minerals used...P. 0. Box 39100 Lafayette, LA. 70593 California, USA This n otable Australian pegmatite locality has...centre of this region, is located 600 kilometres east of Perth, along paved roads. This pegmatite field...hundred metres is sufficient distance to hide a large quarry. During the long summer (November to April), no...popula tion of 30,000, is located 45 km to the north-east along a: two-lane asphalt road. Vol 3. No 2. December |  | | Book (edition) | | explained on pages 31, 32. In figure 3, under Tourmaline, ,ve have an instance of a hemihedral modification...Greek pur, fire, and electric. If a prism of tourmaline, after being heated, be placed on a delicate...delicately suspended magnetic needle. The prisms of tourmaline have different secondary planes at the two extremities... especially boracite and topaz, ,vhich, like tourmaline, are hemihedral in their modifications. Boracite...gems 1 Whnt is D pyro-electric 7 What is said of tourmaline 1 ,vhat of topa1. and borncite 1 SPECIFIC GRAVITY |  | | Journal (issue) | | Contents for July-August, 1950 CHIPS FROM THE QUARRY ................................................................. 363 WORLD'S LARGEST SANDSTONE QUARRY ............ ....................................--v,-- _ ......... ,., :,,..v CHIPS FROM THE QUARRY ---------------•••-••_,..............,..._,..,...fellows, start the grab bag specimens rollin in to East 3'.508 Hartson .Avenue, Mr. and Mrs. V. 0. Daniel...will be given at the banquet. Mr. George Riddle, East '.518 Dalton .Avenue, Spokane 13, Washington is |  | | Book (edition) | | and HAYES of Lowel, Mass., of Columbia, Pennsylvania. Ure's Dictionary of Arts, Manufactures, and...on R, lead pages 31, 32. In figure 3, under Tourmaline, we have an instance of a Itemihedral modification...Greek pur, fire, and electric. If a prism of tourmaline, after being heated, be placed on a delicate...a delicately suspended magnetic The prisms of tourmaline have different secondary planes at the two extremities...property, especially boracite and topaz, which, like tourmaline, are Boracite crystallizes in hemihedral in their |  | | Journal (article/letter/editorial) | | elevation of about 1,500 feet trending a little south of east through the northern part of the 99 Ioo0 REVIEWS...southeast of the Haliburton and Bancroft areas, Logan's Hastings district, these limestones and dolomites...basic intrusives, are less highly altered than in Logan's Original Grenville of Quebec, where they are intruded...masses of zonally arranged quartz sillimanite and tourmaline, which are regarded by the authors as acid differentiates |  | | Journal (article/letter/editorial) | | rock strongly resembling, in a hand-specimen, a tourmaline bearing modification of granite. Under the microscope...Municipality Quarry on the north of the island. Slides from a piece of the ordinary granite in this quarry do not...amount of quartz present is small. In the same quarry a big vein of a still finer-grained, dark reddish...and slides were cut from a good. example (e) (in quarry No. 1) with a view to comparing it with the rocks...made :— Hornblende granite from the Municipality Quarry . . Dark hornblende granite from Tanjong Jelutong |  | | Book (edition) | | rhombohedron, is wanting. For examjde, in crystals of tourmaline rhombohedral planes, and sometimes scalenohedral...dissimilarity in the two extremities of a crystal of tourmaline is connected with pyro-electric polarity in the... are common in some rhombohedral species, as tourmaline. 4. Cleavage. Cleavage usually takes place parallel...magnetite occurring in mica at Pennsbury, in Pennsylvania. Arborescent delineations over surfaces of rock... rkfeactiok akd polakizatiok. 07 plates of tourmaline, cut from a crystal parallel to the vertical |  | | Journal (article/letter/editorial) | | granite, such as syenites, hornblendic schists, tourmaline-bearing felspars, and felspathic rocks generally...Probably the best term to designate them by would be tourmaline-bearing felspars, with a tendency to become gneissoid...with them nearer than Norway and Finland on the east and Canada on the west. But these natural equivalents...Perhaps it is not too much to say that Sir W. Logan's discoveries have quite disposed of the term ' Azoic |  | | Report (volume) | | Elements in the Vicinity of Mount Ascutney, Windsor County, Vermont Leslie J. Cox CHAPTER 0 Carbonate-Hosted...Heavy-Mineral Concentrates from the Orange County Copper District, East-Central Vermont John F. Slack, Paul...and heavy-mineral concentrates from the Orange County (Vt.) copper district, which includes the area...Continental Shelf and Slope A6 The Green Mountains and Chester-Athens Domes-Reworked Cratonal Basement A6 The...rocks (Whitney and Davin, 1987). Immediately to the east in the Lake Champlain and Hudson valleys, however |  | | Book (edition) | | three-sided prism. The prism is thus hemihedral in tourmaline (f. 156, a top view of a crystal), and the prism...to the dihexagonal prism occurs in quartz and tourmaline, the hexagonal prism sometimes having only the...below, and the form accordingly 158 157 156 Tourmaline. Apatite. either rl m-n, or IT m-n. Examples...represents the top view of a crystal of tourmaline. , ; 177 176 Tourmaline. hedral planes, & jft, 2 |,...forms. point of view, the ditrigonal prisms in tourmaline and OKTHOKHOMBIC SYSTEM. 41 . quartz are |  | | Book (edition) | | (16TH EDITION.) NEW YORK: JOHN WILEY AND SONS, 53 EAST TENTH STREET, Second door west of Broadway. 1891...7J or -&-2, produces a is thus hemihedral in tourmaline (f. 156, prism *-2 in quartz. Both these forms...to the dihexagonal prism occurs in quartz and tourmaline, the hexagonal prism sometimes having only -the...and the form accordingly left 158 157 156 Tourmaline. Apatite. Examples of the first of these occur...the rhorobo of tourmaline. represents the top view of a crystal , ; 176 Tourmaline. 8 hedral planes |  | | Report (volume) | | of 76°30', from Tompkins County, New York, to Bradford Coiyity, Pennsylvania, by Henry S.Williams. 1884...cents. 16. On the Higher Devonian Faunas of Ontario County, New York, hy John M. Clarke. 1885. 8°. 86 pp....57 pi. Price 25 cents. 38. Peridotito of Elliott County, Kentucky, by J. S. Diller. 1887. 8°. 31 pp. 1...cents. 58. The Glacial Boundary in "Western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois, by George...Associated Rocks in Delaware, by Frederick D. Chester. 1890. 8°. 45 pp. 1 pi. Price 10 cents. 60. Report |  | | Report (volume) | | __________________ Kaolins from pegmatites. _ _ _______ _ Pennsylvania and Delaware___________________ Maryland___...of the Clay Products Co_ 36 Sprucepine, Mitchell County __ 36 Sprucepine mine- ____-_ 36 Sparks mine 39...Herren property________________ Birdtown, Swain County _____________ Cole & Black property____________...Mitchell County__________________ Jefferson, Ashe County ______________ Bare property_________________ Kaolins...rocks (partly pegmatites)--68 Troy, Montgomery County _ 68 Mount Gilead, Montgomery County____ 69 Property |
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