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| trisocta- silver hedron trisocta- gold platinum galena hedron halite for tetragonal Jor rhombic- ...(holohedral) azurite malachite 2/m gypsum OA2.P epidote pyroxenes amphiboles micas monoclinic prisms...plagioclase. stibnite, the acicular aggregates of epidote and the fibrous aggregates of asbestos minerals...minerals swell and emit bubbles (zeolite group, epidote group, scapolite group), some shed flakes (vermiculite...and three opposite vertices on the other, e.g., epidote. with tetrahedra which are 3) Cyclosilicates joined |
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| mines Cochrane Hill gold mine Smithfield galena occurrence College Grant copper mine Copper Lake copper...Erinville 'Black Granite' quarry Donahue Lake occurrence Lundy road-cut Doughboy Point andalusite Port...are scattered through the property. The Montague district produced a total of 2 119 342 g of gold from 121...can readily be obtained from several dumps. The district produced a total of 26 996 g of gold from I 534...(Map-sheet 53, 1:63 360). (S): 666 Lawrencetown Gold District, Plan and Section (1 :6000). 6 km 15.6 Echo |
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| System of mineral classification 8 Origin and occurrence of minerals 8 Associated minerals 11 Properties...Lastly, data on the genesis, associated minerals, occurrence and application are included. The tabulated section...the minerals in this book as well. Origin and occurrence of minerals In order to gain some knowledge of...zone, sulphur compounds (eg pyrite, chalcopyrite, galena and sphalerite) c.:hange into oxygen salts (eg...certain mineral deposit or rock, and eliminate the occurrence of some others. Examples of associated minerals |
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| 37 37 39 39 40 41 Walker Mine Buckingham galena occurrence Dominion Mine Road-cuts on Val-des-Monts -...Highway 309 Clinohumite occurrence Garnet occurrence des Cedres dam occurrence Parker Mine White's Mine...Canastota Mine des Cedres dam spinel occurrence Lac du Cerf occurrence km 141.7, road-cuts, both sides Highway...china clay mine Laurel diopside occurrence Lac Noir mica occurrence Kilmar Mines Dobbie Mine Brownsburg...Construction Bowesville quarry Greely Quartz Crystal Occurrence Frazer Duntile quarry Addresses for maps, reports |
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| Mesozoic Basins of the Eastern United States II. Occurrence Descriptions and Summary Tables by Gilpin R....MESOZOIC BASINS OF THE EASTERN UNITED STATES II. OCCURRENCE DESCRIPTIONS AND SUMMARY TABLES TABLE OF CONTENTS...Quadrangle, Latitude, Longitude .......... 7 Occurrence Type, Production ................... 7 Deposit...References Cited .......................... .13 VI. Occurrence Bibliography ...................... .14 VII...type* ......... Occurrences listed by type of occurrence and size . . Occurrences listed by metal association |
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| 947-G COPPER DEPOSITS OF THE KOTSINA-KUSKULANA DISTRICT ALASKA BY RALPH E. VAN ALSTINE AND ROBERT F....showing the location of the KotsinaKuskulana .district. _______-__________--_-_--______--_- 124 21...1938. COPPER DEPOSITS OF THE KOTSINA-KUSKULANA DISTRICT, ALASKA By RALPH E. VAN ALSTINE AND ROBERT F...F. BLACK ABSTRACT The Kotsina-Kuskulana district of the Copper River region is between the Chitina River...copper ore from the district. LOCATION AND GENERAL GEOLOGY The Kotsina-Kuskulana district is between the |
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| unusual development, as to represent a mineral occurrence worth recording. Among the major types of igneous...Oronto Group a.. 3: co w C: _J 0 0 Marquette Iron District, Baraga and Marquette Counties diabase dikes...and used by Native Americans millennia ago. The occurrence of monazite-(Ce) in the Precambrian Goodrich...clinozoisite copper corundum datolite diamond galena glauconite gold ilmenite magnesite magnetite monazite...celestine chalcopyrite dolomite epsomite fluorite galena gypsum marcasite millerite pyrite quartz siegenite |
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| . . . . . ... .. . . . ...... Buckingham galena occurrence . . . . . . . . . . . . . . . . . . . . ....35....... Clinohumite occurrence . . . . . . . . . . . . . . . . Garnet occurrence . . . . . . . . . .... . des Cedres dam occurrence . Parke r Mine. White's Mine ... .. Canastota Mine .. . . .. ... . . . des...des Cedres dam spinel occurrence .. . Lac du Cerf occurrence . . . . . . . . . . . . . . . . . . . ....mine. . .. . Laurel diopside occurrence .... . . . . . Lac Noir mica occurrence .... . . .. .. . Kilmar Mine |
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| ...................... General character and occurrence.................................. Petrography................................................. Galena............................................:............................................... 31 Epidote..................................................detailed mapping of the most important mining district. The first investigation of the mineral resources... In 1901 a hasty examination of the Ketchikan district 6 was undertaken, and in 1903 and 1904 reconnaissance |
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| metals form compounds with sulfur (S). The sulphide galena (PbS), for example, contains lead. Oxides contain...90°. Possible Three axes of different MINERAL Galena belongs to the isometric (cubic) system. Even though...often exhibits other geometric faces. On this galena crystal (left), cubic faces are combined with ...flat layers (cleavage in one direction), while galena cleaves in three directions into cubes. The smoothness...how much is absorbed. Minerals such as gold and galena reflect Minerals that phosphoresce, or glow in |
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| metals form compounds with sulfur (S). The sulphide galena (PbS), for example, contains lead. Oxides contain... MINERAL MAKEUP t~.. -~ :,; t"'Jf ' . • ' Galena belongs to the isometric (cubic) system. Even though...it often exhibits other geometric faces. On this galena crystal (left), cubic faces are combined with octahedron...how much is absorbed. Minerals such as gold and galena reflect light much like a polished silver tray...formed by fluorite. PERFECT IN THREE DIRECTIONS (GALENA) GOOD INTWO DIRECTIONS (HALITE) PERFECT IN ONE |
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| ORE DEPOSITS OF THE BAYARD AREA, CENTRAL MINING DISTRICT, NEW MEXICO BY SAMUEL G. LASEY Prepared in cooperation...quartz latite flows; B, Nodular segregations of epidote in later quartz diorite______________ 43 9. Outcrops...ORE DEPOSITS OF THE BAYARD AREA, CENTRAL MINING DISTRICT, NEW MEXICO By SAMUEL G. LASKY ABSTRACT This...in the southwestern part of the Central mining district, Grant County, N. Mex. Practically the entire...wide. This zone 2 BAYAED AREA, CENTRAL MINING DISTRICT, NEW MEXICO is part of a northeastward-trending |
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| minerals have been added and the localities of occurrence have been updated and expanded. The special uranium...Xill Olivine Series Humite Group The Garnets Epidote Group The Subsilicate Type 79 80 98 100 108 136...seldom present, with a resultant paucity of occurrence) tend to be in smaller crystals. Common minerals...granite as a rule, though its texture and its occurrence are similar. Like granite, diorite is a group...of different silicate minerals, like garnet and epidote. Ore minerals — metal sulfides — frequently accompany |
 | Steeves, Nathan J., Hannington, Mark D., Gemmell, J. Bruce, Green, Darwin, McVeigh, Garfield (2016) The Glacier Creek Cu-Zn VMS Deposit, Southeast Alaska: An Addition to the Alexander Triassic Metallogenic Belt. Economic Geology, 111 (1) 151-178 doi:10.2113/econgeo.111.1.151 | Journal (article/letter/editorial) |
| bottom of the lenses in pyrrhotite-rich zones. Galena, tennantite-tetrahedrite, and arsenopyrite are...stratabound carbonate-bearing alteration, and background epidote-bearing alteration. Mass balance calculations indicate...carbonate, feldspar and, locally, minor quartz and epidote. These rocks are magnetic and are cut by numerous... and pyrite with minor and variable chlorite, epidote, and/or feldspar and commonly contain (Ba-K)feldspar...epidotized with epidote in veins and replacing feldspars. Pink Mn carbonate commonly occurs with epidote and calcite |
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| Director Bulletin 906-D GEOLOGY OF THE SEARCHLIGHT DISTRICT CLARK COUNTY, NEVADA BY EUGENE CALLAGHAN Contributions...___.-_-___-_______-_________. Outlook for the district...----____-__._-_-_-_-_______-_________. Mines...main part of the district._________ Mines and prospects in the eastern part of the district.__-_-.______...Geologic map of the main part of the Searchlight District, Clark County, Nev____._-_-_-_-._.___.-_-.__________...Nevada and Utah showing location of Searchlight district and areas covered by previous publications of |
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| ............................... Seven Troughs district.................................................Outlook for the district................................................. Rosebud district................................................... Red Butte district........................................................................ Chafey and the Sierra district.......................................... Kennedy................................................ Epidote...................................:........... |
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| district_-_____-_-___-__ In pocket. 2. Geologic map of the Hyder district ____________________ In pocket. 3. Generalized...international boundary, was much public interest in the district aroused. To meet the call for information as to...geologist, in 1920 spent a month in field work in the district and prepared a report of his observations, which...no definite prediction as to the future of the district could be made. Enough information was obtained...southeastern Alaska, was assigned to study the district. The results of Mr. Buddington's studies, as well |
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| Director , . A Bulletin 849 G THE GIRDWOOD DISTRICT, ALASKA BY C. F. PARK, JR. Investigations in...PLATE 33. Geologic map and sections of Girdwood district, Alaska. _ In pocket. FIGURE 1. Index map showing...mixed sulphides (the Eureka area in the Kantishna district, Mount Eielson, formerly known as Copper Mountain... THE GIRDWOOD DISTRICT, ALASKA By C. F. PABK, Jr. ABSTRACT The Girdwood district has been known for...obtained at six different localities within the district, the rocks are considered of Upper Cretaceous |
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| GEOLOGY -AND ORE DEPOSITS OF THE MAGDALENA MINING DISTRICT, NEW MEXICO BY G. F. LOUGHLIN AND A. H. KOSCHMANN...Gabbro____________________________________ • Distribution and occurrence ______________ _ Lithology ______________________...____________________________ ______ _ 9 Distribution and occurrence _____________ _ . Ltlhology _____ __________...______________________________ ~ ____ _ Distribution and occurrence _____________ _ Lithology ___ .. _________________________...__________ __ _________ ____ _ 12 Distribution and occurrence ___ __________ _ 12 Lithology ________ _________ |
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| districts.____-_--_-----_____-______---_ Bohemia district.._i_-_-__--_---_-_--_---___-______-_____---_--...areas and mining districts Continued. Bohemia district Continued. Mineral deposits._________________...areas and mining districts Continued. Bohemia district Continued. Mines and prospects Continued. Tall...___-_-___.-______-_-_____.__________._ Quartzville district..______-_----._______-_____-.-________-_-Location...and Betty or Smith and McLeary.__________________ Galena.--_-_.-_._________-_._....____________ Golden Fleece |
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| DIRECTOR THE COPPER DEPOSITS OF THE ENCAMPMENT DISTRICT W"YOMI;NG BY ARTHUR C. SPENCER WASHINGTON GOVERNMENT... _.... ___ . _. 42 42 42 43 44 44 45 47 49 Occurrence of gold . _. __ ... : . ...... __ .... __ .....deposits ...... __ ............... _. Types of occurrence ...... _..... _................................_..... _.. ___ . _. __ .... __ ...... ___ .. Occurrence of the ore ........... ___ .... _...... _................ _. _... _........ __ . _.. _. _.. Occurrence of the ore ......... _.......... _... _ . __ |
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| Tectosilicates 397 405 423 446 356 Contents 6. OCCURRENCE AND ASSOCIATION OF MINERALS Rocks and Rock-forming...in a garden has seen minerals in their natural occurrence. The rocks of the mountain, the sand on the beach...to 2 Introduction I materials of natural occurrence. Thus, cement, plaster, and glass are not steel...face-centered lattice. This structure is also found in galena PbS, MgO and many other AX compounds. thermal...as the only form on a few minerals. The other Occurrence of Isometric Forms of the Hexoctahedral Class |
 | Large, Ross, Doyle, Mark, Raymond, Ollie, Cooke, David, Jones, Andrew, Heasman, Lachlan (1996) Evaluation of the role of Cambrian granites in the genesis of world class VHMS deposits in Tasmania. Ore Geology Reviews, 10 (3) 215-230 doi:10.1016/0169-1368(95)00024-0 | Journal (article/letter/editorial) |
| sulphide (VHMS) mineralisation in the Mt Lyell district. Interpretation of regional gravity and magnetic...end of the belt, from Mt Darwin to the Mt Lyell district over a strike length of 25 km. Gold and zinc mineralisation...features of VHMS mineralisation in the Mt Lyell district. 1. Introduction There has been considerable...suggested a relationship between granite emplacement, district scale alteration, seawater circulation and VHMS...granites in VHMS genesis, especially in the Mt Lyell district. theory was delivered by Gulson (1986), who showed |
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| GEOLOGY AND ORE DEPOSITS OF THE CHICHAGOF MINING DISTRICT ALASKA BY JOHN C. REED AND ROBERT R. COATS UNITED...Greenstone-schist sequence...---_-_--__.-_-_-_-___-___--_-__ Occurrence and relations_______________________________...Greenstone_______l-_-______--__-_______-________.__-___-_ Occurrence and relations.______________________________...__-_____--_____------_-------_----__-._-_.-----Occurrence and relations.______________________________....._._._.-__...__.-.-..._..--__...-._... 24 Occurrence and relations.____-__.__--_.-__._._.._---.__ |
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| in diameter in calc-silicate gneisses. ALFORD: Galena and Plrite (95,73(10eality uncertain)Z3l,232,p... graphite, titanite, cocco11te(hedenbergite), epidote, chondrodite and other minerals Qf the limestone...reported (macroscop1c?): a11Anit., apatlt., calCite, epidote, fl rite, ilmenite, muscovite, pyrite, sphene,...respectively. Als8 lenses 0& hornblende-pyroxene-epidote-calcite rock. J,.»er (53.54 (42 28'09",73 07'13"--west...Tourmaline 95 42 0 '33",73 22'49" 5. Chalco rite Galena S halerita Rutile (l18,119(loca1it, uncertain)12 |
