 | Theodore, Ted G., Blair, Will N., Nash, J. Thomas, McKee, E.H., Antweiler, J.C., Campbell, W.L. (1987) Geology and gold mineralization of the Gold Basin-Lost Basin mining districts, Mohave County, Arizona, with a section on K-Ar chronology of mineralization and igneous activity, and a section on implications of the compositions of lode and placer gold. Professional Paper 1361. US Geological Survey doi:10.3133/pp1361 | Report (issue) | | from King Tut placer workings, Lost Basin mining district. Geology and Gold Mineralization of the Gold...-----------Composition of lode gold from the Lost Basin district - - Composition of gold from mines in Gold Basin...-------------59. Placer gold from Lost Basin mining district -----------------------------60. Small, hand-operated...large placer gold nugget from Lost Basin mining district --------------63. Scanning electron micrographs...obtained from northern part of Lost Basin mining district -----------------------------------------64. Graphs |  | | Report (volume) | | EXPLANATION Stream-sediment sample site Unnamed prospect See table 1 for description Surficial deposits...thank personnel of the El Centre and Riverside district offices of the Bureau of Land Management for advice...Workings Sample data and resource estimate Unnamed prospect A limonite-stained quartz v ein in schist...shallow prospect pit One sample of vein contained no significant metal values. Unnamed prospect A pegmatite...as 2 mi (Todd, 1977; 1978; 1979). search. Two unnamed prospects in the western part of the study area |  | | Report (issue) | | Rare-Earth Mineral Deposits of the Mountain Pass District San Bernardino County California GEOLOGICAL SURVEY... Rare-Earth Mineral Deposits of the Mountain Pass District San Bernardino County California By J. C. OLSON...PROFESSIONAL PAPER 261 A geologic study of the district and its rare-earth-bear ing carbonate rocks. One...In 1854 lead ore was found in the Yellow Pine district (Potosi area) on the west slope of the Spring...to warrant the organization of a mining district, Clark district. Soon thereafter, the New York and Providence |  | | Journal (article/letter/editorial) | | omitted from locality information. Where lot and district numbers are given, it is necessary to use topographic...the photographs. Baldwin County Milledgeville district—between the State Sanitarium and the Oconee River:...property—near Commerce: ferrocolumbite (Cook, 1978). Lula district—Standridge property, about 7.0 km east of Lula:...(chryso lite, olivine) (Teague, 1956). Jefferson district—9.7 km southwest of Jefferson on S.R. 11, northwest...Bartow County Allatoona Gold mine—lot 929, 21st district: bornite, chal copyrite, galena, gold, quartz |  | | Journal (article/letter/editorial) | | Tenderfoot mine (about 19131, Esterbrook copper district, Albany County. John Taylor collection. An ideal...Minerals was titled “The Copper Mountain Pegmatite District, Freniont County, Wyoming” and was in the JulylAugust...small area, they are grouped under the district name. District names are from Hausel (1986). Localities...R. 72 W.): allanite (to 4 inches in length), microcline, muscovite, and quartz (Hausel 1986). Big Chief...blue). microcline, muscovite, and quartz. Buttes: see The Buttes. Centennial (La Plata) gold district, 27 |  | | Report (volume) | | and extends northward through the Johnnie mining district, one-half mile west of Grapevine Spring. Rock...leach zone, is also present in the Johnnie mining district (fig. 1). Mineral Resources and Mineral Resource...at the Stirling mine and in the Johnnie mining district (fig. 1) adjacent to the Mt. Stirling Wilderness...Small-scale production is underway in the Johnnie mining district. Fractures and quartz veins host the gold in these...Pass thrust, outside the study area, the El Lobo prospect (table 1, fig. 2, No. 13) lies outside the altered |  | | Report (issue) | | Villa Rica District 0 0 o o Burnt Hickory Ridge District 0 0 0 South Canton District 0 0 o ...analysis of selected rocks of the South Canton district . . . . . . . . . . . . . . . . . . . . . . ....analysis of selected rocks of the Burnt Hickory Ridge district ................................. 23 4. Modal...Modal analysis of selected rocks of the Villa Rica district ........................................... 23...Geology of the South Canton district. 3. Geology of the Burnt Hickory Ridge district. cover pocket 4. Geology |  | | Report (issue) | | ,....., .»..... Migmatite .................. Microcline granite .......... Pegmatite and white granite...... 29 Swartz property ............... 29 Unnamed prospect.............. 29 Literature Cited .............................. Analyses of samples from prospect pits and surface exposures at Haputa ranch .....G. B. Gott ABSTRACT The Wet Mountains thorium district was examined in 1950 by the U. S. Geological Survey...Atomic Energy Commission. The size of this new district is not known, but the deposits found before 1953 |  | | Journal (issue) | | T. R. Rose & R. E. Holden, Jr. Minerals of the Prospect Intrusion, New South Wales, Australia ..........Microminerals Miscellany from France, the Eifel district, and Mont Saint-Hilaire ........................(first color special issue) $20 v .5 /# 5 Julcani District in Peru, Indian M tn. (A L), C apelinha (Brazil)...richer in giant crystals of rose-colored microcline, green microcline (commonly surrounded by an albite rim)...present have not been determined. Microcline KAlSi30 8 Microcline, as the green variety “ am azonite |  | | Report (issue) | | . . . .. ....... . . .. 65 3.5 CHRISOLITE(?) PROSPECT (Site No. HA-1267 [Field Site No. E7260106]) ...14 BONANZA PROSPECT (Site No. HA-1268 [Field Site No. E8020102]) and GOLDEN BELL PROSPECT (Site No. HA-1269..... . .. . ...... .. . . .. ......... 159 3.19 UNNAMED SITE (Field Site No. B7260101) ... ..... ... ..... .... ... . .... ........ ... . 175 3.22 UNNAMED PROSPECT (Site No. HA-1273 [Field Site No. E8030102])..... . . . . ..... .. . .... ..... 218 3.28 UNNAMED PROSPECT (Site No. HA-1275 [Field Site No. K7250102]) |  | | Report (issue) | | Olivenite, 1.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection. Photograph... Davis The Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References ...Nightingale district Quartz epimorph after Calcite Agardite Grossular, Buena Vista district Quartz (amethyst)...Orpiment inclusions Calcite, Getchell Mine Robinson district inclusions inclusions Realgar and Fluorite Rhodochrosite...and Gold Silver and Quartz Silver, Reese River district Smithsonite Sonoraite Callaghanite Malachite |  | | Journal (article/letter/editorial) | | with SR 1557. Subhedral crystals of perthitic microcline and various sized crystals of a light-greenish-yellow...southwest of the road at this point. The Rogers Prospect, 0.6 mile northeast of Shooting Creek, has yielded...Bowling's Mountain. Several abandoned copper mines and prospect pits are located in northwestern Granville C o...small pegmatites carrying smoky quartz and pink microcline at Raven Rock on the west bank of the C a p e...well as some galena and sphalerite. A copper prospect containing malachite and specularite lies across |  | | Report (volume) | | 10 KILOMETERS EXPLANATION -- Mine or mining district having an identified resource of gold and silver...because of its proximity to the Leadville mining district. There are no identified mineral resources within...mines, and possibly underground, in the Sugarloaf district. Potential for Undiscovered Resources Two parts...Turquoise Lake stock and the Sugarloaf mining district. The Turquoise Lake stock, northeast of the wilderness...of the molybdenum detected in two samples from prospect pits in this area and of the traces of fluorite |  | | Journal (article/letter/editorial) | | City zinc district, the Bumpass Cove iron-zinc-manganese district, the Sweetwater barite district, and the...deposits. The Ducktown copper district represents the most complex mining district and contains the largest...SW of Oak Ridge: maghemite (Monger 1986). Moore prospect, 4.5 miles SSE of Norris: calcite, chalcopyrite...1.3 miles ENE of Holladay: dolomite crystals. Unnamed ridge between South Fork and West Fork, 4.4 miles...mine) (Glenn 1925). Blount County Blockhouse prospect, 3-acre area 300 feet NW of Piney Grove Church |  | | Journal (issue) | | from left: Fluorite, 6.7 cm, from the Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher...Working the samarskite-bearing area of the Spinelli prospect with Eddie Luzik (right). Harold Moritz photo... doubly terminated, 2.6 cm, from the Spinelli prospect, Glastonbury, Hartford County, Connecticut. Collected...photo. Samarskite-(Y), 8 cm, from the Spinelli prospect, Glastonbury, Connecticut. Collected December...was 15 cm. I had wanted to collect the Spinelli prospect for over 30 years before the opportunity came |  | | Journal (article/letter/editorial) | | assemblages. THE NYF-TYPE PAPACHACRA PEGMATITE DISTRICT, CATAMARCA PROVINCE, ARGENTINA. F. Colombo, R... Córdoba, Argentina. The Papachacra pegmatite district, located in Catamarca Province, northwestern Argentina...Argentina (27º 00' S, 67º 00'W), is the first district known to occur in this country that has a clearly...orthoclase (uncommon) to intermediate to maximum microcline. However, none has reached a nearly perfect (Al-Si)...microns) thorogummite inclusions. The smaller unnamed prospect pit, about 1.5 kilometers west-southwest of |  | | Book | | Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...consists of ilmenite. magnetite, anatase, biotite, microcline and minor fluorapatite (Robinson and Chamberlain...be found sporadically in old mine workings and prospect pits along the 50-krn length of the Ilmeny Mountains...of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...testing to be hematite. Zagi [Zegi] Mountain, Warsak district, North West Frontier Province. Surface diggings |  | | Report (issue) | | _____________________________________________ St. Kevin district.___.._...__..._________........._._.__._.._ St...mine, along Arty and Snow vein, St. ' ' ' Kevin district. Page FIGURE 40. Index map of part of Colorado...Sugar Loaf district....__._._______.____________. 44. Map of T. L. Welsh adit, Sugar Loaf district-______________..._------_-_-_ 46. Map of Lakewood mine, St. Kevin district..._--_-______-__ 47. Modal composition of some...occur in the northeastern part of the Sugar Loaf district and in the central part of the St. Kevin, but | | | Report (issue) | | te, r.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn coJlection. Photograph...A. Vavis The Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper MINERAL CATALOG...Mountain Mine Grossular, Nightingale district Grossular, Buena Vista district Gypsun1 Heterogen ite He½•eltite...Magnesio-axinite Malachite Malachite and Azurite, Robinson district Malachite after Azurite, Mount Potosi Marcasite...and Gold Silver and Quartz Silver, Reese River district S1nithsonite Sonoraite Sphalerite and Galena Stcphanite |  | | Journal (issue) | | Articles Famous mineral localities: The Bishop copper prospect near Lynch Station, Campbell County, Virginia... famous mineral localities: THE BISHOP COPPER PROSPECT near Lynch Station, Campbell County, Virginia...only one locality in the world: the Bishop copper prospect near Lynch Station, Virginia. At least 26 other...turquoise, but the specimens recovered from the Bishop prospect are still generally considered the best and most...INTRODUCTION Although the existence of the Bishop prospect is common knowledge among mineral collectors, |  | | Book (volume) | | is arguably the most important gem-pegmatite district in North America. Its wealth of tourmalines, morganites... Abbreviations are used for quarry Q, mine M, prospect P, locality L, and area A. Example: Newry - Bell...inherently no difference in the words quarry, prospect, or locality and the major difference seems to...Lower Tryon Mountain quarry, and Upper Colton Hill prospect. Many localities have multiple, closely spaced...standard labeling procedures when they collect at unnamed sites. Locality data should be referred to nearby |  | | Report (issue) | | and limy Carbonized logs and other Sab Tab, and unnamed sandstone and greenishplant remains abundant. mines...mines. colored mudstone. Eurida and unnamed mines __________ do.1_ ------ Fine-grained sandstone _______..._______ -------------------------------Unnamed mines on Sunnyside, _____ do.1 _______ Medium-grained shaly...mudstone. No.1, Mesa I through VII groups, and unnamed mines. V-S_ ---------- Chew (1956a). V-L --------...---------------- Sweetwater Trading Post prospect. Barton No.3 and unnamed _____ do.1 ____________ do_------ |  | | Report (issue) | | Southeastern Piedmont Part 9. Thomaston-Barnesville District, Georgia Part 10. Outlying Deposits in Georgia...Southeastern Piedmont Part 9. Thomaston-Barnesville District, Georgia Part 10. Outlying Deposits in Georgia...(Paper) CONTENTS Part 9. Thomaston-Barnesville district, Ga_ ----------Abstract____ ______ _____________________________...__ _ ____________________________ Future of the district __ _ ___________________ Descriptions of deposits...Bell mine. _____________________________ Grace prospect _________________________ Brown (Parrish) mine___ |  | | Book (volume) | | The Wisconsinan stage of the first geological district, eastern New York: New York State Museum, Bulletin...and 6 g at the Natural History Museum in Vienna, Austria. There are also 1.2 g at Harvard University in...north west from York court house, in the same district of Maine." Mr. W. ( 1809) [note: article signed...twenty miles above the town of that name, in the District of Maine. A celebrated mineralogist now, or lately...the factory and a large part of the adjoining district was consumed, he interested himself in organizing |  | | Report (issue) | | Relations of the Iron Ores in the ( 'arters\'ille District: Trans. Am. Inst. :\lin. Eng., Vol. 30, pp. 40u-S...their economic importance: the potash feldspars, microcline and orthoclase; and the soda-lime series, most...this mineral, its place being taken by microcline. Microcline.-Triclinic, but to the unaided eye its...diameter. Quartz IS usually intermixed with the microcline to a greater or less extent, either as irregular...pencils. Albite is also commonly present in the microcline .crystals as perthitic intergrowths. Because |
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