 | | Journal (article/letter/editorial) | | the argument that quartz crystal aggregates formed in vugs along the underside of quartz veins, filling...incapable of supporting leaching reactions. The quartz in the sheets which follow the cleavage planes...Sub-Arctic Urals]. Virtually all of the crystalline quartz in the region is found in these faults. The thrusts...the dip of the cleavage planes in the rocks. The quartz veins of the area are classified with respect to...of the quartz veins in the area; veins in transverse faults are much less common. The quartz veins of |  | | Report (issue) | | GEOLOGY OF THE ATLANTIC CITY-SOUTH PASS MINING DISTRICT WYOMING by' . Frank C» Armstrong ^l OPEN FILE...regional structure in the Atlantic City-South Pass district.................................................Photomicrograph of thin section of strained vein quartz showing mortar structure, Duncan mine .........i^l Figure 1 Index map, Atlantic City-South Pass district, Fremont County, Wyoming .......................Geologic sketch map, Atlantic City-South Pass district, Fremont County, Wyoming .................... |  | | Book (volume) | | also quarried a rough, porous flintstone from outcrops, especially around McArthur, Vinton Co., for making...WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships of Washington...SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA exposures throughout Co...flint, jasp-agate, jasper, Smoky Quartz 337 Ohio crystals, clear Quartz. From Brownsville, Licking Co...and beds⎯gem flint, translucent chalcedony, drusy quartz. LUCAS COUNTY SYLVANIA, SW, at jct. of Brint St |  | | Book (volume) | | landsvertebrate fossil remains; Pine Ridge, areaQuartz concretions, agates, petrified wood, fossils, etc...quarriesCalcite, Quartz crystals; SE 3 mi., quarry on E bank of the Blue R.geodes (lined with Quartz or rare...tapped and untapped sources for gems and gemstones: quartz family minerals, pegmatite crystals, Turquoise...interesting gangue minerals, Marcasite, Pyrite, Quartz and the usual assortment of associated minerals...E of Fallon): area mines with veins in broken Quartz and TalcGold, Lead and Silver minerals; NE, |  | | Book (volume) | | also quarried a rough, porous flintstone from outcrops, especially around McArthur, Vinton Co., for making...WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships of Washington...SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA exposures throughout Co...flint, jasp-agate, jasper, Smoky Quartz 337 Ohio crystals, clear Quartz. From Brownsville, Licking Co...and beds⎯gem flint, translucent chalcedony, drusy quartz. LUCAS COUNTY SYLVANIA, SW, at jct. of Brint St |  | Niroomand, Shojaeddin, Hassanzadeh, Jamshid, Tajeddin, Hossein Ali, Asadi, Sina (2018) Hydrothermal evolution and isotope studies of the Baghu intrusion-related gold deposit, Semnan province, north-central Iran. Ore Geology Reviews, 95. 1028-1048 doi:10.1016/j.oregeorev.2018.01.015 | Journal (article/letter/editorial) | | Mineralization is in the form of subparallel sheeted quartz veins that are up to ~1 km long within extensional...characterized by potassic alteration (stage-I veins): quartz+adularia+biotite+ pyrite+chalcopyrite+native gold...g/t), and phyllic alteration (stage-II veins): quartz+sericite+pyrite+chalcopyrite+bornite+sphalerite+native...Systematic studies of fluid inclusions in the stage-II quartz samples found five types: monophase aqueous (I–type);...About 70 selected samples were taken from several outcrops from the ore-bearing hypabyssal plutons, volcanic |  | | Book | | Size Categories Dana's Classification of Minerals Quartz Family Gemstones The Various Names and Forms of...ancient gems), calcite, fluorspar, jadeite, pyrite, quartz family minerals ( agate, carnelian, chalcedony...C. from mines in Kenya. This amorphous form of quartz, with its brilliant flickering of rainbow colors...Reube~), topaz (probably citrine or yellow "topaz" quartz, assigned to Simeon), and carbuncle ( any bright...and diamond (no doubt rock crystal, i.e., clear quartz, assigned to N aphtali). Third row: ligure (possibly |  | | Report (volume) | | _-_-____-__-__ Quartz latite porphyry_________________________________________ Quartz monzonite east...65 66 68 70 70 71 71 73 73 74 74 75 Granophyric quartz monzonite._____-__________-___---___---___- 75...______________________ Short faults west of Republic district vein system.________ Faults just east of Republi...____________ Fault zone along the Republic district vein system.____________ High-angle faults of east...___________------_--________________________ Republic district vein system_______________________________ Summary |  | | Report (issue) | | ........ .. Pegmatitic quartz veins .... .. ......... ... ....... ... Quartz veins ... ... .. .........and stock-work deposits ..... .. ... .. .. . Gold-quartz veins ..... .. ....... .. .. .... .. .. Veins of......... .... ..... .... .... .... ... . Kenora district (Patricia portion) .... ... .... . Red Lake area... .. .. .. .... .. .... .. ...... ... . Kenora district...................... .... .. ............. ..... .. ... .... .. .. .. .. .. .... Rainy River district..... .. ..... .... ..... .. ........ . .. ... |  | Smith, C.W., Samater, R.M., Hussain, M.A., Basheer, M.A., Trent, V.A., Cole, J.C. (1985) Preliminary report on the gold deposits at Al Habla, Kingdom of Saudi Arabia. Open-File Report Vol. 1985 (85-128) US Geological Survey doi:10.3133/ofr85128 | Report (issue) | | worked gold-bearing quartz veins. Most of the workings are trenches following vein systems, which ordinarily...of ancient workings in the area. Only isolated outcrops of veins are exposed, and in most places they...known vein systems are covered by a veneer of alluvium. Detailed, methodical sampling of quartz from all...not reach the bottoms of the more intensely mined vein systems. Fractures in granite that allowed for the...sites of gold and quartz deposition and in most of the area dikes and gold-bearing quartz veins are found |  | | Report (volume) | | ___ Granodiorite, quartz monzonite, and quartz diorite Leucocratic (white) quartz monzonite ______ ___...group ________ Browns Creek prospect ____ _ Money quartz prospect ____________ China Basin _____________________...82 91 91 96 96 98 99 99 100 101 101 102 Massive quartz deposit _______________1_____ Alphabet group _...Photograph showing prospect bench in massive quartz vein, Basin claims ____________________ 46 15. ...has been produced from high-grade pockets in a quartz vein at the Little Queens mine. Other pockets of high |  | | Report (issue) | | ......................................... 5 Vein quartz ......................................................................................... 164 Quartz veins ..................................................................................... 196 Quartz veins ..................................................................................... 209 Quartz veins ...........................................146 Photomicrograph showing fine chert containing quartz patches and diffuse bedding (Moora silica mine) |  | | Journal (volume) | | Geologist C. A. Logan, District Mining Engineer C. McK. Laizure, District W. Burling Tucker, Reid...Francisco - District Sampson, Assistant Mining Engineer District Engineer Chas. V. Averill, District Mining...Francisco San Francisco TABLE OF CONTENTS REPORTS OF DISTRICT MINING ENGINEERS Page 1 Sacramento Field Division...mining activities of the State, prepared by the district mining engineers are given. Special articles dealing...possibilities, and developments). REPORTS OF DISTRICT MINING ENGINEERS In 1919-1920 the Mining Bureau |  | | Report (issue) | | ................................ J 15.-Fig. J. Quartz (etched)-Hart.'s l\Jine, Torrington ..........................• ······ ( 2. Rutile in Quartz (grass•atone)-Tingha .............................................................} 3. Nath ·e Bismuth in Quartz-Kingsgatc ................................... ........... .) 32.-Fig. 1.-1\-Iap of the Barrier District ................................................Torrington........................... l2-2 Cook's Vein, St:innum ••••••••••••••••••••••••••• 123 Smith |  | | Journal (volume) | | Nevada Mining at Bingham, Utah The Greenwater District Ditto Ditto Ditto Abyssinia, Minerals In The...Charles [64 James W. 82 431 114 Nelll 815 District, British W Columbia, The 783 431 795 736 241...Tube-Mill Lining Forbes Rlckard 511 17 The Boundary District The Mineral Output of. In 1906 Broken Hill, Acid...Editorial Wm. Amalgamation of Copper Ore Pan Amalle District of California, The American Copper Spiral Pipe...E. California, Alluvial Mining In The Amalle District of 785, 818 The Ancient River Channels of 567 |  | | Journal (volume) | | Olaf P. C. A. Logan, District Mining Engineer C. McK. Laizure, District W. Burling Tucker, Reid...Engineer District Mining Engineer Sampson, Assistant District Engineer Chas. V. Averill, District Mining...Francisco - San Francisco TABLE OF CONTENTS Page DISTRICT REPORTS OP MINING ENGINEERS Redding Field Division...EMPLOYMENT SERVICE PUBLICATIONS 7 91 91 Gold Quartz Deposits ADMINISTRATIVE MINERALS AND STATISTICS...possibilities, and developments). REPORTS OF DISTRICT MINING ENGINEERS In 1919-1920 the Mining Bureau |
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