 | | Journal (article/letter/editorial) | | apparently as follows: magnetite, arsenopyrite, pyrite, pyrrhotite, sphalerite, chalcopyrite, and galena...granite intrusion; and (3) those associated with diabase and traps. The present writer believes that all...Granite, with minor quantities of diorite and diabase, occupies approxi mately two thirds of the area...—Granite, the most widespread rock of the region, outcrops parallel to the southwest-northeast-trending coast...Extension Mine show. Hand specimens from contact outcrops often show fairly well on a small scale the different |  | | Journal (issue) | | T etrahedrite, Gottesg~be Mine, Roth, Nassau, Germany ; Celesttte, Giona Mine, Girgenti, Sicily, Italy...compressed air, pass under the river. vated in the diabase of the Palisades. When this tunne:l is mentioned...passing beneath the river. Actually the graphy. A valley _runs north an~ so~th, under-river section is only...fa ult on the west side of Kings Bluff into the diabase, and before reaching the ventilation shaft at the...the east side of Kings Bluff pass out of the diabase again into the shales and sandstones. At the ventilation |  | | Report (issue) | | Lost Gulch quartz monzonite_ . .: _____________ _ Diabase __________________________________ _ Diorite porphyry...Structure along the Old Dominion vein fault___ Globe Valley block______________________________ Inspiration...sedimentary and volcanic rocks and the intruded diabase ___________ _ 4. Idealized section of the Martin...quartz monzonite, extensive sills and dikes of diabase intruded mainly into the formations of the Apache...intercalated with thin flows of olivine basalt, filled the valley between the Pinal Mountains and Apache Peaks. · |  | | Report (Issue volume) | | igneous rocks, or clearly associated with Triassic diabase. As with the Paleozoic group, a younger age limit...Cornwall-type magnetite I ,000,000,000 Copper adjacent to diabase 1,000 Copper in Triassic redbeds 1,000 Phoenixville...production has come from the Bamford and Sinking Valley deposits of similar 1 type. The Gap nickel mine...Triassic diabase. Cornwall-type magnetite-copper deposits. Cu in Triassic sediments adjacent to diabase, and...deposits. Cu in Triassic sediments distant from diabase. Zn-Pb-Cu in quartz veins cutting Triassic and |  | | Report (issue) | | ...........................................19 Diabase Dikes .......................................................................................57 Pyrite .................................................older rocks. Quaternary alluvial gravels cover the valley bottoms and terraces, and mud-flows form fans in...Carbonates are present as cavity fillings, and pyrite is disseminated through the propylitized area....molybdenite, with locally abundant biotite, fluorite, pyrite, chalcopyrite, calcite, and rhodochrosite. The |  | | Journal (article/letter/editorial) | | ......................................... 275 Diabase dikes............................................past Lake Nipissing and notches the divide of the valley of the Ottawa River. 1 Department of Interior,... SURFICIAL DEPOSITS 273 Lake, down the Mattawa River valley to sea level. At the present time, due to post-glacial...upland west of Wanapitei River in a narrow V-shaped valley. The deposits of sand and clay in the valleys of...sandy and clay deposits in the Wanapitei River valley accumulated in the lake waters of the Nipissing |  | | Report (Issue volume) | | Lawrence Lawrence Lawrence Bessemer Enon Valley Enon Valley Wampum 87 88 89 90 91 92 93 94 95 Lawrence...igneous rocks, or clearly associated with Triassic diabase. As with the Paleozoic group, a younger age limit...Cornwall-type magnetite I ,000,000,000 Copper adjacent to diabase 1,000 Copper in Triassic redbeds 1,000 Phoenixville...production has come from the Bamford and Sinking Valley deposits of similar 1 type. The Gap nickel mine...Triassic diabase. Cornwall-type magnetite-copper deposits. Cu in Triassic sediments adjacent to diabase, and |  | | Journal (article/letter/editorial) | | 25o,oooouncesper annum. SPACE RELATIONS OF DIABASE AND SILVER DEPOSITS. The importantsilver depositsof...faults in sedimentsbeneath the sills and in the diabase, pointingto structuralcontrolas the main feature...ore. Where veins do occur in the Keewatinand diabase,manyof themcontainvery high-grade ore. At a few...Important upper-contactore bodies were in the diabase and overlyingKeewatinformations. At the Beaverand...Timiskaming minesthe veinswere near a sharpcurve in the diabase-Keewatin contact. In'South Lorrain, the commercialore |  | | Journal (article/letter/editorial) | | and Proterozoic schists, as well as extensive outcrops of younger biotite granite in the northern section...faults are intermittently distributed gabbro and diabase bodies of various size and shape. They form a 120... 1). - alkaline-basic rock body 1 - gabbro-diabase rock - deep rupture and great fault - garnet amphibol...sub-belt at the north margin of the belt; gabbro-diabase is present as stock; also occurring are the late...the belt, a series of WNW-trending gabbro-diabase outcrops. 3. The alkaline-basic rock sub-belt is distributed |  | | Report (issue) | | Structural Geology. The Penokean Orogeny. Nipissing Diabase. Late Penokean Orogenic Events. The Hudsonian Orogeny...Espanola. 111 Espanola Municipal Centennial Park. 111 Outcrops along Highway 68. 112 House Lake Gold Prospects...and Quirke Mines Access Road. 165 Serpent River Valley. 167 Quirke Lake. 167 Islands in Quirke Lake. 168...schist and quartzite. 25. Coarse grained dioritic diabase. 26. Massive amphibolite with garnet crystals....Formation. 31. Croker Island complex. 32. Keweenawan diabase dike. 33. Lipalean surface. 34. Manitoulin - Niagara |  | Zheng, Jiahao, Chai, Fengmei, Yang, Fuquan, Meng, Qingpeng, Li, Qiang (2017) Geology, genesis, and geodynamic setting of Cihai: an Early Permian diabase-hosted skarn iron deposit in the eastern Tianshan, Northwest China. International Geology Review, 59 (10) 1292-1309 doi:10.1080/00206814.2016.1258677 | Journal (article/letter/editorial) | | geodynamic setting of Cihai: an Early Permian diabase-hosted skarn iron deposit in the eastern Tianshan...geodynamic setting of Cihai: an Early Permian diabase-hosted skarn iron deposit in the eastern Tianshan...geodynamic setting of Cihai: an Early Permian diabase-hosted skarn iron deposit in the eastern Tianshan...to intermediate rocks are composed of gabbro, diabase, and monzodiorite. Geological and geochemical characteristics...deposit are hosted in the diabase, and all Fe–Ti oxides in the ore-hosted diabase are ilmenite, instead of |  | Deasy, G. F., Griess, P. R., Balazik, R. F., Burtnett, J. W. (1967) Atlas of Pennsylvania’s Mineral Resources - Supplement, Limestones and dolomites of Pennsylvania, in Atlas of Pennsylvania's Mineral Resources. Mineral Resource Report M50-1S, Pennsylvania Geological Survey. | Report (Issue volume) | | Limestone Co. Plant No. 9, Penn-Dixie Cement Corp. Valley View Lime Co. Belle Mine, The Warner Co. Whiterock...Limestone Co., Inc. Paoli Quarry, The Warner Co. Valley Forge Stone Co. Bradford Hills Quarry, Inc. Cedar...Inc. Locust Point Quarries Shippensburg Quarry, Valley Quarries, Inc. Geo. E. Ebersole and Sons Steelton...Dry Run Quarry, New Enterprise Stone and Lime Co. Valley Quarries, Inc. Zullinger Quarry, Fry Coal and Mart...Lawrence Lawrence Lawrence Bessemer Enon Valley Enon Valley Wampum 87 88 89 90 91 92 93 94 95 Lawrence |  | | Report (volume) | | deposition_-______________________________________ Diabase (Precambrian?)____-__-__-____--__--_----_--_--_--_-_______...Missoula. Sills, dikes, and stocklike bodies of diabase of probable late Precambrian age constitute the...tectonic lineaments: one, the Mathead-Bitterroot Valley line, trends northward just west of the quadrangle...quadrangle diagonally. The Flathead-Bitterroot Valley line seems to separate areas of contrasting structural...The flat valley floor of the Clark Fork averages a little more than a mile wide, and the valley floors |  | | Report (volume) | | on the uranium deposits, which indicated that diabase that was nearly contemporaneous with Precambrian...Troy were deposited in some places on truncated diabase. Locally, these younger rocks, which were previously...County there were intrusions of diabase magmas. Most of the diabase is late Precambrian in age and it...bodies of this diabase are sill like, but discordant contacts are common. Later diabase has been reported...in the south-central part of the county, where diabase dikes cut limestones of Pennsylvanian age. 1 Subsequent |  | | Report (issue) | | several horizons recognized as clearly as the outcrops 26 XI. A. Drag folds in the upper slaty beds,...of N.E.! sec. 25, T. 60 N., R. 13\V., showing outcrops and (in broken lines) the structures supposed...W. corner sec. 26, T. 60 N., R. 13 W., showing outcrops and (in broken lines) the structure supposed to...the iron formation south of Birch Lake, showing outcrops and dips, which are extended underground........the topography above mentioned. In this area, outcrops are numerous; most of the iron is in magnetic |  | | Report (issue) | | Philadelphia 1922 Natural size. Abnormal pyrite crystals, French Creek mines, Chester County, Pennsylvania...limestones the shales, etc., most. effect of a diabase dike may be practically nil, where under other...Oxides: magnetite, ilmenite, rutile. Sulfides: pyrite, chalcopyrite, pyrrhotite, pentlandite; Element:...Zeolites are of common occurrence in the Triassic diabase quarries of Adams, Lancaster, Berks, and ; Hydrous...Sulfides: cryolite; Car- molybdenite, bismuthinite, pyrite, arsenopyrite, chalcopyrite; Elements: gold. |  | | Report (issue) | | ........................................... 18 Pyrite and marcasite....................................pyrope zircon rutile sillimanite kyanite corundum pyrite gold cassiterite anatase apatite muscovite andalusite...hypersthene, malacon with zircon, marcasite with pyrite, piedmontite with epidote, and riebeckite with...heavy-minerals amples, especially those from near outcrops of diabase dikes. Cassiterite Cassiterite grains were...include zircon, rutile, and apatite. Pyrite and marcasite Pyrite is recognized by its characteristic brass-yellow |  | | Report (volume) | | pre-Cambrian igneous rocks___.._---___.___-__---___ Diabase (Triassic ?)__________.________________________________...pre-Cambrian rocks are intruded locally by small diabase dikes of Triassic(?) age, and are overlain along...a few percent of pyrrhotite, chalcopyrite, and pyrite are present in the ore. The principal gangue minerals...pre-Cambrian rocks are intruded locally by small diabase dikes of Triassic (?) agev Along the western edge...crops out on a few small hills in Timber Brook valley, 1^4 miles north of Splitrock Ppnd; and silicated |  | Wang, Yaying, Zeng, Lingsen, Asimow, Paul D., Gao, Li-E, Ma, Chi, Antoshechkina, Paula M., Guo, Chunli, Hou, Kejun, Tang, Suohan (2018) Early Cretaceous high-Ti and low-Ti mafic magmatism in Southeastern Tibet: Insights into magmatic evolution of the Comei Large Igneous Province. Lithos, 296. 396-411 doi:10.1016/j.lithos.2017.11.014 | Journal (article/letter/editorial) | | Beijing PT E D 100037, China ABSTRACT: The Dala diabase intrusion, at the southeastern margin of the Yardoi...U-Pb geochronology results to show that the Dala diabase was emplaced at ~132 Ma and geochemical data (whole-rock...confirm that the Dala diabase intrusion is part of the Comei LIP. The Dala diabase can be divided into...low-Ti basaltic rocks from a relatively large diabase intrusion in the Dala area, Tethyan Himalaya, ...identified magmatic evolution path is common to other outcrops in the Comei LIP. The broader overall goal is |  | | Journal (article/letter/editorial) | | directly on Archean granites and granitegneisses. Diabase and polymictic conglomerates in lower parts of...coarser grains of quartz, magnetite, occasionally pyrite (fig. 14). The structure, texture, and morphology...some localities, this series opens with quartz-diabase, polymictic, to medium to smallpebble quartz conglomerates...village and farther on to the middle Jatulian diabase outcrops. Cross-section in Figures 12 and 13 have been...altered to sericitic schists and dolomites. Iron pyrite ores were often accumulated in these basins; syngenetic |  | | Journal (issue) | | l v2xl ' '2 I 12 oz.I . 4.00 LIMONITE ps. after PYRITE, Utah. Group o f large cubic xis. 2 1 i x2 1 2x2...Fluo•itf' xis. 4x2 1 , x2 1 2 . . . . . . . • 2 .50 PYRITE. Leadville , Colorado. Xld. group. brilliant. l...Platte River as it carved the now broad North Platte Valley from the original Miocene and Pliocene beds. The...gravel were left scattered throughout the broad valley as the stream bed continually changed its course...gravel beds throughout the entire North Platte Valley are the same as those found at Bayard because of |  | | Report (issue) | | Figure 15.1 (p.82) should show the line oflow-Ti0 2 diabase in Pennsylvania and Maryland extending down to...of hypothetical early Mesozoic basin containing diabase intrusions and basalt flows. Add the following...Geochemical and petrologic features of some Mesozoic diabase sheets in the northern Culpeper basin, by David.................. 86 17. Petrology of the Boyds diabase sheet, northern Culpeper basin, Maryland, by Paul........... 91 18. Geochemical reconnaissance of diabase from Vulcan Materials Quarry in the Culpeper Mesozoic |  | | Thesis/Dissertation | | Granite The Granodiorite 21 vi The Diabase Dykes . The Diabase Sill and Actinolite-Magnetite Veins...SERIES EVENT Intrusion of Diabase sill U/Ag Mineralisation o Intrusion of Diabase dykes M o Faulting...area and are of widespread occurrence. dipping, diabase. The most common type is steeply up to 100 feet...more than one), A sill-like body, of quartz diabase outcrops at many places between Echo Bay and the head...intrusive magnetite bodies are associated with the diabase intrusive activity of the area. s 11 Structure |  | | Report (volume) | | Triassic and Jurassic Systems ••••••••••••••• 34 Diabase • • • • • • • • • • • • • • • • • • • • • • • •...rifting accompanied by intrusion of swarms of diabase dikes. These events were precursory to the opening...rocks is a few kilometers east of the quadrangle. Diabase dikes of Triassic and Jura~sic age intrude the...as is discussed in a later section. Swarms of diabase dikes, many 4 GEOLOGY OF·MARSHALL QUADRANGLE...in some rock, and biotite in others; magnetite, pyrite, and epidote are present in small amounts. This |  | | Report (issue) | | .............................. 225 Mississippi Valley-type Pb-Zn deposits, by D.L. Leach, J.B. Viets...environmental signatures. Many sulfide minerals, including pyrite and marcasite (FeS2), pyrrhotite (Fe,.xS), chalcopyrite...chalcocite (Ci^S) > galena (PbS) > sphalerite (ZnS) > pyrite (FeS2) > enargite (Cu3AsS4) > marcasite (FeSj)...content and decreasing pH reflects greater amounts of pyrite and other sulfide minerals, coupled with lesser...minerals associated with the deposits. For example, pyrite- and enargite (Cu3AsS4)-rich ore in acid-altered |
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