 | | Journal (article/letter/editorial) | | Texas mineral locality INDEX Whereas Texas is well known for its vastness, cattle industry, and oil...I T S T O P O G R A P H Y A N D G E O L O G Y , Texas, the second largest state, has produced relatively...famous localities. A s this article will show, Texas has had—or currently has—nu merous mineral occurrences...produce good specimens; yet when specimens from Texas are sought in collections and dealers' stocks, few...some basic facts that help explain the situation. Texas has very little federal land in its mineralized |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 7 Box Elder County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 10 Cache County . . . . . . . . . . . . . . . . . . . . . . . |  | | Book | | enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground...oFtne ato aa Gem Ghd nQkTeane Uva a nes ly ia" mine Ui nrobs inesob cere ts ou ioe tok us 'aaieomolitt...exception of the rhodochrosites of the Sweet Home Mine, Alma, Colorado, which were loaned for photography...Organ Mountains Jarilla Mountains Santa Rita Area and the Central Mining District, Grant County Burro...Burro Mountains Apache No, 2 District Lake Valley Caballo Mountains Chloride District Hansonburg District |  | Leavitt, E. D., Spell, T. L., Goldstrand, P. M., Arehart, G. B. (2004) Geochronology of the Midas Low-Sulfidation Epithermal Gold-Silver Deposit, Elko County, Nevada. Economic Geology, 99 (8) 1665-1686 doi:10.2113/gsecongeo.99.8.1665 | Journal (article/letter/editorial) | | Low-Sulfidation Epithermal Gold-Silver Deposit, Elko County, Nevada E. D. LEAVITT,† Department of Geological...exchanged meteoric waters. Introduction THE KEN SNYDER mine exploits the largest known Au-Ag epithermal deposit...dipping, quartz-adularia-calcite-precious metal bonanza veins hosted by volcanic rocks. The Ken Snyder...or recently active, epithermal Au mine N Historic epithermal Au mine or prospect b. 0 30 km FIG....characterized by geologic mapping of the Snowstorm Mountains (Wallace, 1993), Midas district (Emmons, 1910; |  | | Report (volume) | | recently found in the Tenmile district, Summit County. In his booklet, which today would be classed as...feldspar, and mica, occur in some form in every county in the State. Among mineralogists, Colorado is...southwestward from Boulder County to the southern limits of the San Juan Mountains. They have yielded much...lava flows of North and South Table Mountains, lefferson County, the contact-metamorphic minerals of...of Italian Mountain, Gunnison County and elsewhere, and the vast number of rare minerals in the alkalic |  | | Journal (article/letter/editorial) | | andpyrite at vein contacts andquartz,sericite,montmorillonite,chlorite,andpyrite distally.Kaolinitcis presentin...Data for Bonanzas in the Comstock Lode Years Bonanza Ophir mined Elevation(ft) Tons Au Ag (oz/ton)...the northernVirginiaRange.If the K-Ar age of and mine dumpexamination. 12.3 _+0.5 Ma for a Chalk Hill...veinparagenesis, barren east-westcalcite veins in the Bullion mine hanging wall (Reid, 1905) suggestthat theseoffs....•-I. cl+ep +cc a clay (kaolinite, illite-montmorillonite)+ quartz q-pyrite "argillic" subassemblage |  | | Report (issue) | | Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946...peripheral zone. Late stage actinolite±chlorite±montmorillonite. Igneous rocks may be altered to epidote pyroxene...(Cyprus), York Harbor, (Canada) Turner-Albright, (USA) References 3.1 (continued) Petersen and Zantop...massive sulfide in some deposits zeolites, montmorillonite (and chlorite?); stringer (stockwork) zone... Examples Colorado Plateau Grants, New Mexico Texas Gulf Coast (ross frong) References 4.4 (continued) |  | | Report (issue) | | ROGER P. ASH LEY The Republic Gold District, Ferry County, Washington By MORTIMER H. STMTZ and ROBERT C....ores-Wash1ngton-Ferry County 3 Hydrothermal deposits-Nevada 4 Hydrothermal depos1ts-Wash1ngton-Ferry County I Geologrcal...cited HU H11 The Republic gold district, Ferry County, Washington Abstract H14 Introduction H14 Geologic...Generalized geology of the Republic graben, Ferry County, H16 Washington H6 Index map showing the mines...Comstock Lode at the Consolidated H29 Virginia bonanza TABLE Hl. Potassium-argon ages for rocks and vein |  | | Report (issue) | | Related to Bullfrog Hills Caldera, Nye County, Nevada and Inyo County, California By HENRY R. CORNWALL and...Springs Dolomite.__________________________ Roberts Mountains Formation.__________________ Lone Mountain Dolomite...Fluorspar__ _ ___________________________________ Daisy mine.___________--__----_----__-_-_Geologic setting....(1935), 1 mile southeast of Daylight Pass, Funeral Mountains. 4. Generalized geologic map of the Bullfrog Hills...Hills caldera near Beatty. 6. Mine workings of the Daisy fluorspar mine. 7. Geologic map of levels 3, |  | | Report (issue) | | ___________________ 121. Thalenite from Teller County, Colorado, by J. W. Adams, F. A. Hildebrand, and...Precambrian(?) and Cambrian stratigraphy in Esmeralda County, Nevada, by J. P. Albers and J. H. Stewart_____...Carrara Formation, Bonanza King Formation, and Dunderberg Shale east of Yucca Flat, Nye County, Nevada, by Harley...Pennsylvanian age, and adjacent beds, Washington County, Arkansas, by L. G. Henbest __________________...Bloyd Formation of Pennsylvanian age, Washington County, Arkansas, by L. G. Henbest___ 132. The Eagle Valley |  | Criss, R. E., Champion, D. E., McIntyre, D. H. (1985) Oxygen isotope, aeromagnetic, and gravity anomalies associated with hydrothermally altered zones in the Yankee Fork mining district, Custer County, Idaho. Economic Geology, 80 (5) 1277-1296 doi:10.2113/gsecongeo.80.5.1277 | Journal (article/letter/editorial) | | Zones in the Yankee Fork Mining District, Custer County, Idaho R. E. CR•SS, U.S. GeologicalSurvey,Reston...a miningregionin the SalmonRiver Mountains of northwest Custer County, central Idaho (Fig. 1). Usefuldescriptions...Custer magnetometer, althougha few stronglymagnetized mine, the roof zone of an Eocene granodiorite- sampleswere...bodies, including those at Red Mountain, the Sunbeam mine, and Estes Mountain, field strength(0.565 gauss)in...epidote,I, i = illite, K, k = kaolinite,M, m = montmorillonite,p = pyrite, Q, q = quartz, V, v = vermiculite; |  | | Report (issue) | | _________________ ___. Nevada ___________ Elko County. - ______ ... _ Star mine, Harrison Pass _____ ____ Pag« 59...63 Good Hope barite mine, Tuscarora Range _____ _ ._. ________ Humboldt County Golconda manganese-tungsten...64 64 65 65 65 65 Barium Products Corp., Ltd., mine...... --_--______.______ Lincoln County__-__-----_-----_-----___...district____ .________..__ Nevada Scheelite mine.. _ ______ Hooper No. 2 mine __ _____ _ _ Yankee Girl mine_______________...Mountains_____________.____ Desert Scheelite mine..... _______ Gunmetal mine _ ___________ _ Manganese-tungsten |  | | Report (volume) | | quadrangle in Elko County, Nevada, and Owyhee County, Idaho, is an area of rugged mountains that reach an...feet and have almost a mile of total relief. The mountains are bounded on the north by a dissected tableland...direction of throw is variable. The Jarbidge Mountains are roughly a nearly north-trending horst; north-flowing...fraction of the area is in Elko County, Nevada; the remainder is in Owyhee County, Idaho. The region is accessible...JarMdge quadrangle is the ridge of the Jarbidge Mountains, a single crest that trends about N. 20° W. and |  | | Journal (article/letter/editorial) | | Maryland Parkway, Las Vegas, Nevada 89154-4010, USA Abstract The 144 zone is a pseudobreccia-hosted...deposit that formed in the middle to late Cambrian Bonanza King dolostone along an unconformity with the underlying...selective dissolution and replacement of the lowermost Bonanza King dolomite. Fluid-rock reaction transformed...The Bare Mountain mining district, located in Nye County, Nevada, approximately 160 km northwest of Las...gold system that formed along the contact of the Bonanza King and Carrara Formations, two carbonate rock |  | | Report (issue) | | ---------------------------------------Chlorite-montmorillonite-calcite-quartz assemblage __ ~ontmorilloni...stobalite-pyrite assemblage ______ Illite-montmorillonite (mixed layer)-quartzpyrite assemblage_____...small amount of gold and silver; the Castle Peak mine, which produced about 2,500 flasks of quicksilver;...amounts of chlorite, calcite, epidote, albite, montmorillonite, zeolites, and pyrite. The propylitized rocks...several intervals of argillized rocks containing montmorillonite, cristobalite, pyrite, and zeolites. Drill |  | | Journal (article/letter/editorial) | | pseudomorphs of, Anatase, after sphene from Roanoke County, Virginia (Mitchell) Ancylite (Saebo) Andersen... -- 436 INDEX 7'O VOLUM]J 19 Wales. 1435 Bonanza west, the story of lvestern mining rushes, 1848-1900...Brindley, G. W, and Ray, S. Complexes of Ca-montmorillonite with primary monohydric alcohols (Clay-organic..."Pr.rrhotite measurement" by Groves and Ford, Am. Mine r a l , . 4 8 ,9 1 1 - 9 1 3 . B1'l...Faheyite, crystallography of, Sapucaia pegmatite mine, Minas Gerais, Brazil (Lindberg) Faujasite, on the |  | | Journal (issue) | | full year (12 color issues) is just $35.00 in the USA. Mineral News 1885 Seminole Trail—Ste 202—Charlottesville...News —————————————————Page Page 3 The Tenderfoot Mine: Mining Myth or Lost Subterranean Treasure Fred...Gallinas Mountains of central New Mexico are located near the town of Corona in Lincoln County. Since 1881...best known mine is the Red Cloud Copper mine, located on the southern portion of the mountains. Smaller...One occurrence in the mountains that is the stuff of legends is the Tenderfoot Mine. Early reports of the |  | | Journal (article/letter/editorial) | | 78 carbonate); and argillic (kaolinite, montmorillonite); all of which reflect the mobility of Si,...zone. The argillic zone mainly includes 124 montmorillonite, kaolinite, and a small portion of white mica...bottom to top, white mica→ white mica+ 133 montmorillonite → 134 demonstrates the changes or variations...and ＜2205nm) as 138 well as kaolinite or montmorillonite (equates to hornfels); and (iv) short-wavelength...mica with well crystallized kaolinite and montmorillonite) and propylitic zones 142 (white mica with |  | | Journal (article/letter/editorial) | | minerals belonging to the clay groups (kaolin, montmorillonite and hydromica groups) occur abundantly in many...hydrothermal alteration seemed evident. In the Zuni mine kaolinite is also associ- ated with pyrite and...Argillized zone. Outer sub-zone. Allophane,montmorillonite(?), hydrousmica, sericite Transition sub-zone...calcite, leucoxene. Argillic phasemhydrous mica,montmorillonite-type clay (beidellite?) kaolinite, leucoxene...Montana (26) Argillized zone. Montmorillonite subzone--montmorillonite-typeclay, nontronite-type clay |  | | Journal (article/letter/editorial) | | described carrying nontronite, saponite, talc and montmorillonite over altered/metamorphosed impure limestone...hosts gold mineralization at the Tarcoola Blocks mine and is regarded as a good local chemical trap for...Formation sediments on the Paxton Granite. The ‘Bonanza Zone’ refers to supergene upgrading of gold (with...include: kaolin, illite, muscovite, phengite, montmorillonite, hematite, goethite, chlorite, carbonate, alunite...identified in the spectral logs. TD009 intersected the ‘Bonanza Zone’ between 50 and 80 m with a peak Au value |  | | Report (issue) | | Serials List iv Bibliography Subject Index 25 County Index . 61 Rock-Unit Index 69 ii BIBLIOGRAPHY...non-marine diatoms from the Harper District, Malheur County, Oregon [abstr.): Geol. Soc. Am., Abstr., Vol.... PotDssium-<�rgon dtltes, about 15 m.y., Grant County. Abstr., Vol. 4, No. 7, p. 441. - 1974. Isotopic...transparent aus Oregon/USA labradorite [A (plagioclase feldspar) from Oregon, USA]: Dtsch. Gemmol. Bard...Lake 1973. Geology and mineral resources of Coos County, Oregon: Oreg.,Dep. Geol. Miner. Ind, Indiridual |  | | Journal (article/letter/editorial) | | sericite, biotite, kaolinite, illite and montmorillonite. Such assemblages are characteristicof Butte-type...carbonate,quartz, and minor allophane,sericite,montmorillonite,leucoxene,and pyrite. There is relatively little...makethisconversion thanfromplagioclase or montmorillonite. Perusal of the literature reveals that the...extensivelydevelopedin suchTertiary epithermaldistrictsas Bonanza,Red Mountain,and Summitville,Colorado(6, 7, 53)...COLOEADO •/ Quartz latite Quartz latite to montmorillonite alt. to kaolinite alt. to illite alt. Quartz |  | | Journal (article/letter/editorial) | | A contraryexampleis describedby Burbank from Bonanza, Colorado where a natural barrier to movement of...replacement of limestone.In the Northern Empire Mine of Canada(11) the rocksnear the veinsare brown due...locally tourmaline. At the Nighthawk Penninsulargold mine Byers (19) found the rock darkeneddue to the development...epidote,mariposite,and serpentine. At the Chesterfield Mine (14) an emerald-greenzone is described. Byers (19)...has describedan examplein the Canadian Malartic mine where a "red alteration"is developedby the formationof |  | | Journal (article/letter/editorial) | | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...Colorado, USA By Ken Kucera Fabulous mineral specimens from the rich Bulldog Mountain Mine grace private and...and mineral associations. Also recovered from the mine was an abundance of fine, wellcrystallized baryte...Creede 6 Rich Silver Legacy of the Bulldog Mountain Mine 7 “Close, But No Cigar” 7 The Homestake Mining Company...Paradise 11 Mineralogy and Paragenesis Bulldog Mountain Mine 11 Six Stages of Mineraliza�on 18 Minerals Overview | | | Journal (article/letter/editorial) | | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...Colorado, USA By Ken Kucera Fabulous mineral specimens from the rich Bulldog Mountain Mine grace private and...and mineral associations. Also recovered from the mine was an abundance of fine, wellcrystallized baryte...Creede 6 Rich Silver Legacy of the Bulldog Mountain Mine 7 “Close, But No Cigar” 7 The Homestake Mining Company...Paradise 11 Mineralogy and Paragenesis Bulldog Mountain Mine 11 Six Stages of Mineraliza�on 18 Minerals Overview |
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