 | | Journal (article/letter/editorial) | | JULY_AUGUST, 1967 MICAS OF THE BROWN DERBY PEGMATITES, GUNNISON COUNTY, COLORADO1 and,Mineralogy,The E...Michigan. Ansrnecr The Brown Derby No. 1 pegmatite, of Gunnison County, Colorado, contains a highly diversified...elements with respect to their positions in the pegmatite and probably with respect to relative time of...replacement layers formed by reactions between zonal pegmatite rock and deuteric, residual pegmatitic fluids...closed-system environment. INrnotucrtoN The Brown Derby group of pegmatites,Iong known as one of the |  | | Journal (article/letter/editorial) | | 45, MAY_JUNE, 1960 STIBIOTANTALITE FROM THE BROWN DERBY No. I PEGMATITE,COLORADO* E. Wu. HotNntcu, Departmenl...M'ich'igan. The Brown Derby group of pegmatitesand especiallythe Brown Derby No. 1 pegmatite on the east...east side of Quartz Creek Valley in Gunnison County, Colorado, "are famous for the exceptionaldevelopment...al., 1956).The geologyof the dikes and of the district has been thoroughly investigated (Hanley et al...with certaintv from the Brown Derbv group is given in Table 1. Stibiotantalite was found by the writer |  | | Journal (article/letter/editorial) | | THE PARAGENESIS OF THE WALDEN PEGMATITE, PORTLAND, CONNECTICUT (PART III) (Continued from last issue)...by Julius Weber, Mamaroneck, N. Y. Quartz in soda-lithium pegmatite is generally much less abundant than...core margin zones or in the core itself, euhedral quartz crystals are likely to be deposited along with...in the lithium replacement body in the Walden pegmatite appears to be: first, caesium beryl, either morganite...finally the deposition of the last generation of quartz filling in all of the interstitial spaces left |  | | Journal (article/letter/editorial) | | Radioactive columbite is related to a particular pegmatite district, its paragenetic position, and the presence...of the properties and textures of the opaque pegmatite minerals in polished section. Species studied...studied included columbite-tantalite, stibiotantalite, samarskite,euxenite,allanite, uraninite, fergusonite...the discovery, at the Mica Lode pegmatite in Fremont County, Colorado (Heinrich, 1948), of a relatively...spessaritite) rock that replaces footwall parts of quartz-microcline cores. G (Mica Lode) 5.58, 5.66, and |  | | Report (issue) | | white to pale reddish pink; pale yellowish brown to dark brown. Streak: White. Luster: Dull, earthy in aggregates...370(1) Z=4 X-ray Powder Pattern: San Diego mine, California, USA. 3.038 (100), 4.835 (90), 2.964 (90), 3...35 8.50 Total 97.9 96.62 (1) San Diego mine, California, USA; by electron microprobe, total Fe as FeO;...Ca1.11 (Ta1.44 Nb0.51 )Σ=1.95 O6 . (2) Wampewo pegmatite, Uganda; by electron microprobe, total Fe as FeO;...Association: Fersmite, stibiotantalite, cassiterite, microlite, beyerite, tourmaline, albite, quartz (San Diego Co |  | | Journal (article/letter/editorial) | | February 2015 MINERALS FROM THE HYATT MINE, TALCVILLE, ST. LAWRENCE COUNTY, NEW YORK. S. C. Chamberlain, Department...Zinc Corporation of America operates the new Hyatt mine on an orebody just south of the Oswegatchie River...Talcville in the Town of Edwards, St. Lawrence County, New York. The orebody consists of massive iron-rich...of sepiolite in the form of mountain leather, the mine has not, until recently, produced anything of particular...particular interest to collectors. In early 1994, mining operations encountered cavities lined with crystallized |  | | Report (issue) | | Stibiotantalite Sb(Ta, Nb)O4 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic...Semitransparent. Color: Dark brown to light yellowish brown; reddish yellow, reddish brown, greenish yellow; in...light, pale yellow-brown to brown, may be zoned. Streak: Pale yellow to yellow-brown. Luster: Resinous...Pattern: Synthetic SbTaO4 ; nearly identical to stibiotantalite. 3.121 (100), 3.506 (38), 2.950 (34), 2.687...Greenbushes, Western Australia. (2) Mesa Grande district, California, USA; by electron microprobe, corresponding |  | | Journal (article/letter/editorial) | | 45, MAY_JUNE, 1960 STIBIOTANTALITE FROM THE BROWN DERBY No. I PEGMATITE,COLORADO* E. Wu. HotNntcu, Departmenl...M'ich'igan. The Brown Derby group of pegmatitesand especiallythe Brown Derby No. 1 pegmatite on the east...east side of Quartz Creek Valley in Gunnison County, Colorado, "are famous for the exceptionaldevelopment...al., 1956).The geologyof the dikes and of the district has been thoroughly investigated (Hanley et al...with certaintv from the Brown Derbv group is given in Table 1. Stibiotantalite was found by the writer |  | | Journal (article/letter/editorial) | | FEBRUARY, 1965 THE CHIEF LITHIUM PEGMATITE, DEVILS HOLE, FREMONT COUNTY, COLORADO1 E. Wu. HnrNnrcu eNo...north of the well-known Devils Hote (lingneim) pegmatite (Hanley et aI.,1950).The depositlies approximatelr...approximatelr.-five miies north of the post officeof Texas creek, which is on the south side of the Antelope Gulch...) . and chemicals corporation in canon city, colorado. However, Iithium minerals were rumored to have...found in this area as early as 1956. The Chief pegmatite was exploredfor lithium and berl,llium in the |  | | Journal (article/letter/editorial) | | 458 Simpsonite and stibiotantalite from Benson pegmatite mine, Mtoko, Southern Rhodesia. By O. vox KNORRIXG...minerals simpsonite and stibiotantalite is described from a lithium pegmatite at Mtoko, Southern Rhodesia...new formula is proposed. S IMPSONITE and stibiotantalite, two of the rarer tantalum minerals, are found...a number of pegmatites that comprise the Benson mine at Mtoko, in the north-eastern part of Southern...Simpsonite has been previously described from four pegmatite areas only: Tabba Tabba in Western Australia (Bowley |  | | Journal (issue) | | Newsletter Pebble Beach Pegmatites Lake Buchanan, Llano County, Texas Art Smith 9118 Concho Str. Houston, Texas...Canine Road Marble Falls, Texas 78654 .7 l Llano County has long been known for its rare-earth granitic...year. Continued on page 6 l. • Figure 1. Smoky quartz crystals from Pebble Beach pegmatites; Art Smith...Geologist for Texas Gulf at their Frasch sulfur mine at New Gulf, Texas, I noticed a small vial with...symposia held by other FM chapters is planned: "Pegmatite Mineralization in the Southeastem U.S." to be |  | | Journal (article/letter/editorial) | | JanuaryEebruary: Cerussite and fluorite, Blanchard mine, Socorro County, New Mexico. Peter J. Modreski photo. MarchlApril:...MarchlApril: Wulfenite, Red Cloud mine, Arizona. Vienna Natural History Museum specimen, 0. Medenbach...Medenbach photo. May/June: Legrandite, Ojuela mine, Mapimi, Durango, Mexico. Houston Museum of Natural Science...tetrahedrite, chalcopyrite, and quartz, Sweet Home mine, Alma, Park County, Colorado. Martin Zinn specimen, Jeffrey... NovemberDecember: Silver, Bulldog mine, Mineral County, Colorado. F. John Barlow specimen, Malcomb Hjerstedt |  | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite...ABSTRACT The complex, petalite-subtype Varuträsk pegmatite in the Proterozoic rocks of northern Sweden is...is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated in eight units, but the (Nb,Ta)-oxide...compositional features of the host cassiterite. Stibiotantalite shows high values of Ta/(Ta + Nb) and mere...abundance of native antimony and stibarsen in the pegmatite, and the absence of Bi-bearing minerals. Rare |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ...................................... Famous mineral localities: the Home Sweet Home mine ..................................................339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 by J. A...AMAZONITE with smoky quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar |  | | Journal (issue) | | 199~ Weird The Mineral and Wonderful from Quartz Alberta's Collector's Newsletter in Septarian...(though a little skeptical) to learn of a nearby quartz collecting locality. It is a three-hour drive northeast...locomotive cxursions. My first collecting specialty was quartz, for which I've retained a soft spot, and I was...produced a wide variety of interesting and unusual quartz crystals. These are found in abundant ironstone...nodules that weather out of Fig. 1 Partial, hollow quartz crystal 11/4 inches (3 cm) across, with multiple |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Book | | nearly all metals and the inevitable closing of many mining operations, it is a matter of the industry's survival...decision, not only is a handy volume affered to the mining and processing community but also duplication of...another oxide, "yttria", from minerals found in the pegmatite at Ytterby, Sweden. Both supposed oxides were...Swedish ehernist Ekeberg in the eourse of analyzing pegmatite minerals from Ytterby, Sweden and Kimito, Finland...minerals from the same loeality, the farnaus pegmatite at Ytterby, Swcden. This faet stresses the geoehemieal |  | Loun, Jan, Novák, Milan, Cempírek, Jan, Škoda, Radek, Vašinová Galiová, Michaela, Prokeš, Lubomír, Dosbaba, Marek, Čopjaková, Renata (2018) Geochemistry and secondary alterations of microlite from eluvial deposits in the Numbi mining area, South Kivu, Democratic Republic of the Congo. The Canadian Mineralogist, 56 (2) 203-220 doi:10.3749/canmin.1700091 | Journal (article/letter/editorial) | | OF MICROLITE FROM ELUVIAL DEPOSITS IN THE NUMBI MINING AREA, SOUTH KIVU, DEMOCRATIC REPUBLIC OF THE CONGO...within the ~1000–900 Ma old Kibara belt unit, Numbi mining area, South Kivu province of the Democratic Republic...in the degree of fractionation: in the Mungwe pegmatite (lepidolite subtype) cassiterite . microlite-group...wodginite þ ferrotapiolite; at the Misumari II pegmatite (berylcolumbite subtype) microlite . cassiterite...microlite (the latter present only at the Mungwe pegmatite) are mostly homogeneous and compositionally uniform; |  | | Journal (article/letter/editorial) | | Limonite and hematite are stripped mined in Crenshaw County, Alabama, and specimens collected are very interesting..."Limonite and hematite are to be found on most any county road south of Montgomery (Montgomery Co.), Ala...Crenshaw County—Davenport, Highland Home, Bradenton and Petrey are all small towns in Crenshaw County near...pocket is filled with milky quartz (rudely xled but here and there little quartz xls showing). ARKANSAS—At...four inches across. The exact locality is Yosemite Creek Campground, near the top of the pass. "On Grizzly |  | | Journal (article/letter/editorial) | | minerals of meta-gabbroic rocks in the Sibukawa District, Central Japan. Allopalladium.. . Altschuler,...site in Homeland, Florida. Bertrandite from Mica Creek, 1318 4lo 909 5+7 INDIJ,X TO VOLUME 15 Queensland...A. Cleavage and tle identification of minerals Brown, G. M. Effect of ion substitution on the unit cell...pseudomorph after Clark, J. R. (Book Review). . quartz from Torrington, New X-ray crystallography of S...ion substitution on the unit cell dimensions of (Brown) Coats, R. R. Minimizing damage to refractometers |  | | Catalog/List | | ...................... . . . . . . 77 78 Mining and Mining Engineering ............. 78 Paleontology...COVER PHOTOGRAPH: _ VANADINITE Apache mine, near Globe, Gila County, Arizona. Sharp hexagonal barrel-shaped...Durango, Mapimi, mina Ojuela. Green-gray to red-brown crystalled on limonite, rich ................. 1...... . Fl. Utah Toelle Co., Gold Hill, Gold Hill mine. .50 2.50 Transparent xls on limonite with austinite...fluo rescence under ultraviolet light. The Ojuela mine is one of Mexico's largest producers of beautiful |  | | Journal (article/letter/editorial) | | replaced during the latter stagesof granitic pegmatite evolution by manganotantalite and fersmite or...r, and low a".. during alteration by evolved pegmatite fluids at 350-550'C and 2-4 kbar. Secondary(w...mineralassociation Rutherford pegmatite,Amelia, VA, second intermediate zone Tin Mountain pegmatite,Custer, SD, quartzspodumene-mica...goethite Brown Derby pegmatite,Gunnison County, CO, fepidolite{u aftz zone Opportunity pegmatite,GunnisonCounty...GunnisonCounty, CO, quartz zone Pidlite pegmatite, Mora County, NM, lepidolite4uartz zone Fungwe district, Zimbabwe |  | | Catalog/List | | Geology ..... . Petroleum Geology ..... . Mining and Mining Engineering . Prospecting and Fluorescence...VANADINITE specimen from the Apache mine, near Globe, Gila County, Arizona GLOBES AND ATLASES .........Durango, Mapimi, mina O juela. �en-gray to red-brown crystalled on limonite, rich . . .. .... . . .....fluo rescence under ultra violet light. The Ojuela mine is one of Mexico's largest producers of beautiful...calcium hydroxy-silicate. California Riverside County, Crestmore. White prismatic crystalline on merwinitegehlenite |  | | Journal (issue) | | Menzies Pink topaz from the Thomas Range, Juab County, U ta h .........................................to 4 cm, on matrix, from Ghundao Hill, Mardan district, Pakistan. F. John Barlow collection; photo by...their dry, written lists (“Wulfenite, Red Cloud mine, Arizona, 1-inch, 500; 2-inch, $2; 2 inch, $3.50”...to Uli c/o Martin Zinn, P.O. Box 2433, Evergree Colorado 80439. I The Mineralogical Record, volume 26,...Delta Bravo Denver Box Co. Diversified Minerals Dry Creek Minerals E & R Crystals Eastern Minerals - Czech |  | Černý, P., Chapman, R., Staně, J., Nová, M., Baadsgaard, H., Rieder, M., Kavalová, M., Ottolini, L. (1995) Geochemical and structural evolution of micas in the Rožná and Dobrá Voda pegmatites, Czech Republic. Mineralogy and Petrology, 55 (1) 177-201 doi:10.1007/bf01162587 | Journal (article/letter/editorial) | | lepidolite might be possibly due to mixing of residual pegmatite fluids with metamorphic pore solutions. * Permanent...surprising to realize that micas from the Ro;mfi pegmatite in western Moravia, the type locality of lepidolite...lepidolite in particular, is quite remarkable in this pegmatite. Most of the meager information on the Ro~nfi...to incorporate the micas from the Dobr~ Voda pegmatite, another classic locality in western Moravia....Rbl) Qtz (Ab,Toz,Zrn) Qtz (Ab,Rbl) Rbl (Rbl) Pegmatite unit* type of mica (iv) graphic (vi) Ab outer |
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Brown Derby No. 1, Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA