 | | 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...crystals of albite, lepidolite, colored tourmaline, beryl, apatite, topaz, fluorite, phenakite, bertrandite...replacement body in the Walden pegmatite appears to be: first, caesium beryl, either morganite or gashenite |  | | Journal (issue) | | small black micro crystals of manganbabingtonite, quartz, calcite, datolite, and inesite (identity confirmed)...(8 cm) tall, and J5/g inches (4 cm) thick. The quartz from here can also be nice; I had one large clear...by a quantity of glistening '·Herkimer diamonds" quartz crystals, in which she specializes. Most of them...France. Also, he had small trays holding small clear quartz crystals, one tray with pale green inclusions of...stibnites from a new Nevada locality, the Murray Mine, not the old Manhattan, but he had only three specimens |  | | 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) | | Vol. 20 SOCIETY OF' AMERICA MAY, 1935 No.5 COLORADO PEGMATITES KBNNBTU K. Lauons, Unioersity of Kansas...in every county 'of Colorado along the Front Range of the Rocky Mountains from Larimer County on the Wyoming...Wyoming line to Custer County in the south-centralpart of the state, and in scatteredpre-Cambrianareas...schists and granites of Larimer County are cut by numerous pegmatite dikesl which have been exploited...exhibiting an ore mineral phaseoccur in Boulder County.3JeffersonCounty contains both tourmaline and muscovite |  | | Journal (article/letter/editorial) | | PEGMATITE MINERALS OF THE UNITED STATES DAVID M. SEAMAN American Museum of Natural History, New York...found in all types of pegmatite from the common granite type to the lithium pegmatite. Many localities have...near Bedford and Overlook, New York; near Golden, Colorado and elsewhere. A fine crystal measuring 4x4x10...tourmaline crystal was noted in the Luella mine near Avon, Latah county, Idaho, which measured 3x3x8 feet. Other...Dakota. A black crystal from Micaville, Randolph county, Alabama, was 10 inches in diameter and from 3 |  | | Journal (article/letter/editorial) | | monazites from several well-studied pegmatites and pegmatite districts in the western states have been analysed...only of individual pegmatites but also of entire pegmatite districts. WITHIS the last fifteen years there...from t*he Shelby district. Norbh (‘arolina; two are from quartz monazite pegmatite and three from the...monazite from different pegmatites in a single district show any composiCona1 variation. 3. General compositional...for cerium. (;EOI,OGY OF THE tiPECIMENS Petaca District, New Mexico The geology and mineralogy of the |  | | Journal (article/letter/editorial) | | was done by the senior author in New Mexico and Colorado at various times during the summers of 1948, 1949...and pink tourmaline, colorlessand light yellow beryl (goshenite), columbite, and cassiterite. The rose...154), "There is an abundanceof coarsegranite pegmatite bouldersin the immediate neighborhood of the quarry...unusually large scale . . . is due to the action of pegmatite intrusions upon the materials of the gneisslimestone...contact zone." Specimensof rose mica-bearing pegmatite from Bolton show the following megascopiczonal |  | | 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...the discovery, at the Mica Lode pegmatite in Fremont County, Colorado (Heinrich, 1948), of a relatively...albite-muscovite-beryl (+ triplite and spessaritite) rock that replaces footwall parts of quartz-microcline...Small plates ol columbite occur with beryl in wall zone pegmatite. G 6.26. Radio- 1365 RA DIOACTI VE |  | | Journal (article/letter/editorial) | | 1960 STIBIOTANTALITE FROM THE BROWN DERBY No. I PEGMATITE,COLORADO* E. Wu. HotNntcu, Departmenl of...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...the minerals identified with certaintv from the Brown Derbv group is given in Table 1. Stibiotantalite |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | 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 |  | | Journal (article/letter/editorial) | | THE WALDEN GEM MINE By DAVID M. SEAMAN American Museum of Natural History, New York, N. Y. The Walden...Walden Gem Mine is located on the Walden farm just off of Cotton Hill road about five miles northeast of...the hill and on top of the hill you will find the mine (quarry). Please close all gates after you. This...species of minerals only present in this type of pegmatite. The quarry was opened up early in 1962 by two...in lithium pegmatites as an impurity in caesium beryl and also along with rubidium in some lepidolite |  | | Journal (article/letter/editorial) | | Park, Maryland. Hafi, John C., Colorado School of Mines, Golden, Colorado. Heyl, George R., U. S. Geological...articles on quartz oscillatorplates. These valuable and timely contributions on the geology of quartz crystal...inspection, grading, cutting and testing of thin quartz wafers, were made possible largely through the...mineralogy Mineralography Memorials Miscellaneous Quartz osciliator-plates (Symposium) Total entries Illustrations...geological studies in both field and Iaboratory. Mining geologists have made valuable paragenetic studies |  | | 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 |  | | 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 (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 (article/letter/editorial) | | mineralsmay be recoveredas by-products of feldsparor mica mining. Madagascaris the only country that has produc...URANIUM minerals are common minor constituentsof pegmatite deposits, in the United Statesand other parts...mineralsthat were producedas byproducts during mining for mica and feldspar. The studyof uraniummineralsin...manyearsof woekwerespentonthe investigation of sheetmica,beryl,lithium,columbium, and tantalumdepositsin all of...pegmatites, Keystone,S. Dak., and the Hyatt Beryl pegmatite,Larimer County, Colo.; and to JamesJ. Page,who furnishedmostof |  | | Journal (article/letter/editorial) | | QUANTITATIVE ANALYSIS OF LITHIUM-BEARING MORA COUNTY, NEW MEXTCO PEGMATITE, Rrcn.qno H. J,luNs, California Institute...:"*Nrs: ili:;{ih,,.",."u Description of the Pidlite pegmatite. General features Structure. Zones.. Composite...Mineralogy. Quantitative analysis of the Pidlite pegmatite General methods. Modal analyses Chemical composition...Pidlite dike, one of several lithium-bearing pegmatite bodies in the Precambrian terrane of the Sangre...Mora County, New Mexico. Its major part, which is well exposed in surface and underground mine workings |  | | Journal (article/letter/editorial) | | PROPERTIES OF TOURMALINE WITH ITS POSITION IN THE PEGMATITE* M. H. Staetz, K. J. MunarA, ANDJewarr- J. Grass...bizonal, Iepidolite-bearing Brown Derby pegmatites no. 2 and no. 3 of Gunnison County, Colo., show a consistent...wittr position in the pegmatite. Starting with the outer wall of the pegmatite and going inward toward...Be, and Li in tourmaline increases toward the pegmatite core. Fe, Mg, Ti, Na, Co, Ni, Cr, and V decrease...to the crystals of the outermost part of the pegmatite. The main variation in tourmaline composition |  | | Book (edition) | | COLO RAD O GEM T RAILS t.lilky quartz crystals, Ow-ay. Katherine H . Jensen. AND MINERAL GUID E RICHARD...MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive ¥em and mineral collecting tour 01 Colorado, revealing the interesting places where Nature...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak |  | | Journal (article/letter/editorial) | | 3749/canmin.1600010 A TECTONIC EVALUATION OF PEGMATITE PARENT GRANITES SARAH L. HANSON Adrian College...Department, 110 S. Madison St., Adrian, Michigan 49221, USA ABSTRACT Pegmatites containing rare elements can...suggested by the acronyms. The relationship between pegmatite family and granite tectonic type were re-examined...published granite compositions as a proxy for initial pegmatite composition, with special regard to the orogenic...diagrams for these granites suggest that LCT granite-pegmatite systems originate in orogenic and perhaps less |  | | Book (edition) | | — _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ■ : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils America’s Mountain: Pikes Peak and the Pikes...Nature As Sculptor: A Geologic Interpretation of Colorado Scenery Guide to Geologic Literature Popular Gemology...Gemology Mineral Collectors Handbook Colorado Gem Trails The Art of Gem Cutting (With Dr. H. C. Dake)...Dake) * RICHARD M. PEARL ★ COLORADO GEM TRAILS AND MINERAL GUIDE ★ SKETCH MAPS BY MIGNON WARDELL PEARL |  | Thompson, Woodrow B., Bearss, Gene T., Falster, Alexander U., Simmons, William B., Nizamoff, Jams W. (2000) The Estes Quarry, Cumberland County, Maine: A New Pegmatite Mineral Locality. Rocks & Minerals, 75 (6) 408-418 doi:10.1080/00357520009605667 | Journal (article/letter/editorial) | | 16 August 2013 Cumberland Countv. Mahe A New Pegmatite M ineral Locality T he Estes quarry in southwestern...southwestern Maine exposes a granite pegmatite hosting more than forty mineral species. This locality contains...located on Route 5 in West Baldwin, Cumberland County, Maine (fig. 1). It is on the western flank of...on a bright purple mineral in one of the large pegmatite boulders scattered around the pit. The mineral...(fig. 2). Most of the exposed ledge was granite pegmatite, so the fresh rock pile was checked for interesting |  | 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 (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ..................................Co. Mining Districts ............................................................22 Arizona County Map.........................23 Arizona – Cochise Co. Mining Districts .................................... |
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