 | | 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...cross-cutting structural relationships indicate that the albite-Li mica units are not primary zones but are replacement...replacement layers formed by reactions between zonal pegmatite rock and deuteric, residual pegmatitic fluids |  | | 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) | | 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) | | TOPAZ-BEARING PORTION OF THE BROWN DERBY NO. 1 PEGMATITE, GUNNISON COUNTY, COLORADO State P. E. RosuNBn;.G...topaz-bearing portion of the Brown Derby No. 1 pegmatite, Gunnison County, Colorado, has been reconstructed...relationships in the light of the recent model for pegmatite genesisby Jahns and Burnham (1969). The coarse-grained...form multiple quarta pods. INrnorucrrox The Brown Derby pegmatitesare a group of three main dike-like...within the Quartz Creek Pegmatite District (Staatz and Trites, 1955) about 17 miles east of Gunnison,Colorado |  | | 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) | | 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...with other very late formed euhedral crystals of albite, lepidolite, colored tourmaline, beryl, apatite,...in the lithium replacement body in the Walden pegmatite appears to be: first, caesium beryl, either morganite |  | | Journal (issue) | | CHAPTER REPRESENTATIVES (ALSO BOARD MEMBERS) COLORADO CHAPTER: Bob Hembree; rhembree@comcast.net MIDWEST...Finger) and LKA Emeralds, Hiddenite, Alexander County, NC Go On Public Exhibit in New York City. Emeralds................................... 2 Independence Mine, .................................................................................. 2 Himalaya pegmatite,.................................................................................. 2 Unnamed pegmatite occurrence, Volcan Mountains ................ |  | | 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) | | 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 |  | | Journal (article/letter/editorial) | | was done by the senior author in New Mexico and Colorado at various times during the summers of 1948, 1949...(p. 361), ". . . a rose mica is obtained at the albite vein in Chesterfield, Mass., and at Goshen in the...Ralston (1938). The mineral assemblageincludes albite, spodumene, blue, green, and pink tourmaline, colorlessand...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 |  | | 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;...microlite, beyerite, tourmaline, albite, quartz (San Diego Co., California, USA); microlite, wodginite, zircon |  | | 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...Columbite occurs as tabular crystals in a unit of albite-muscovite-beryl (+ triplite and spessaritite) rock...rock that replaces footwall parts of quartz-microcline cores. G (Mica Lode) 5.58, 5.66, and in the same |  | | 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) | | PEGMATITE MINERALS OF THE UNITED STATES Downloaded by [University of Calgary] at 23:09 04 August 2017...the Dake mine, Mitchell County, North Carolina; with tysonite in Cheyenne Canyon near Colorado Springs...Springs, Colorado; and with rutile in Alexander County, North Carolina. MONAZITE, is essentially a phosphate...Park no. 2 mine near Penland and in crystals to one and one half inches in size at the Dake mine in Mitchell...Mitchell County. It occurs also in crystals at the Ray mine near Burnsville and the Ramsey mine near Toledo |  | | Journal (article/letter/editorial) | | in quartz. A Lithium-Bearing Pegmatite in the Clear Creek District, CLEAR CREEK COUNTY, COLORADO In...Recently a lithiumbearing pegmatite has been rediscovered in the Clear Creek district on the east flank of...of Mt. Evans. This pegmatite, the Bald Mountain tourmaline prospect, contains specimens of dark green and...and blue tourmaline in quartz, as well as fine-grained lepidolite. History Boos (1954) first noted the...of the pegmatite occur at the road cut. Mineral enthusiasts should be aware that the pegmatite is located |  | | 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) | | 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 |  | | 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) | | 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 |  | | 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) | | 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 (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...Keystone,S. Dak., and the Hyatt Beryl pegmatite,Larimer County, Colo.; and to JamesJ. Page,who furnishedmostof...closeassociation with potashfeldspar,plagioclase, and quartz. Many of the more commonprimary uraniummineralsbelongto |  | 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 |  | | 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...tubes, and other electronic equipment. The Walden pegmatite appears to be located along the contact of the |  | 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). |
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