| | Journal (article/letter/editorial) |
PEGMATITE MINERALS OF THE UNITED STATES DAVID M. SEAMAN American Museum of Natural History, New York...article are for the most part uncommon or rare in pegmatite. Only fluorite, calcite and siderite are at all...Bernardino County, California and also in pegmatites north of the Reagan mining district, Nevada. FLUORIDES...the most common fluoride mineral occurring in pegmatite. It is often associated with cassiterite, tourmaline...amount in the rare earth type of pegmatite as at Barringer Hill, Llano County, Texas where large masses weighing |
| | Journal (article/letter/editorial) |
BEYERITE FROM COLORADO* E. Wru. IferNnrcrr, Unioersity of Michigan, Ann Arbor, Michigan. Ansrnacr Bismutite...pegmatites in colorado and northern New Mexico. rn three pegmatites in south-central colorado (Mica Lode and school...school section deposits, Fremont county, and Meyers Ranch body, park county) beyerite is intergrown with...spring of 1943the writer examined pegmatite deposits in south-central colorado for the Geological Survey, united...been recorded (Heinrich, 1946). Field work on Colorado pegmatites was resumed in the summer of 1946 under |
| | Journal (article/letter/editorial) |
PEGMATITES OF EIGHT MILE PARK, FREMONT couNTY, coLoRADO E. Wm. Heinrich, Deparlment of Mineralogy, Uniaersi...Feldspar No. 1 . Magnusson Crosscut. . . . . Mica Lode. Meyers Quarry. Conclusions. Bibliography. 556 556 556...J/J 5t I 579 583 5d5 PEGMATITES OF EIGHT MILE PARK, COLORADO .).) I MINERALOGY GeNBnar, FnarunBs...FnarunBs On the basis of occurrence the pegmatite minerals may be divided into three groups: o 1. The common...present at all, are small. fn the School Section pegmatite 1- to 6-inch vugs containing minute cleavelandrte |
| | 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...1955 by the discovery, at the Mica Lode pegmatite in Fremont County, Colorado (Heinrich, 1948), of a relatively...specimenswere collectedby the writer. Eight-Mile Porh, Fremont Co., Colorad.o Ref.: Heinrich, 1958 Deposits...Deposits represented: Mica Lode, Meyers Quarry Columbite occurs as tabular crystals in a unit of albite-muscovite-beryl |
| | 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 (issue) |
Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ......................................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...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |
| | Journal (issue) |
Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...Mandarino Famous mineral localities: The Annaberg District, Lower A u stria ...............................by C. Auer M ineralogy of the Boqueiraozinho pegmatite, Parelhas, Rio Grande do Norte, B r a z il......them a call at 972-540-6999 and order your copy. COLORADO FOSSIL EXPO Denver Merchandise Mart • Mart Plaza...Martin Zinn Expositions • P.O. Box 999 • Evergreen, Colorado 80437-0999 • Fax (303) 674-2384 162 The M ineralogical |
| | Journal (issue) |
experiencing remnants of winter while the rest of the county can feel spring in the air. This means it’s time...vanegas3@charter.net CHAPTER PRESIDENTS (ALSO BOARD MEMBERS) COLORADO CHAPTER: Mark Jacobson; markivanjacobson@gmail...MINERALOGY Vol.46, No.2 Page 5 Compliments of the Colorado Chapter Newsletter: Get it While You Can: the...pay for all of the infrastructure required for a mining company to process the deeper, lower grade hypogene...copper minerals rarely occur as good specimens in Colorado. If you want to add a great specimen of azurite |
| | Book (edition) |
describes sites under of the nearest town and county. and the many maps included book contain such...4B^ Diamond M Tourmaline ^P Ruby. Sapphire O Quartz crystal ^J^ Garnet __ Azurite, Malachite, Chrysocolla...with respect to one another. gem minerals The quartz gems, such as amethyst, form crystal prisms with...another at 60 degrees and intersected by a fourth Quartz and vertical axis at right angles to the other...other, light) FELDSPAR TWINS I J PHENACITE QUARTZ CRYSTALS ffrl (^h /&> ^& \b^ ^ VESUVIANITE |
| | Book (edition) |
MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Diamond M Tourmaline fQl Ruby, O Sapphire Quartz crystal 'y^ Garnet — Azu rite, Malachite, Chrysocolla...Maryland; Professor Richard Pearl of Colorado Springs, Colorado; and Professor Jack Hanahan of Belmont...from Derbyshire or, perhaps, a pyramid of smoky quartz from Cumberland. The next it may be rock crystal...Talc 6. Orthoclase feldspar 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite 9. Corundum |
| | Book |
HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...are 100 maps geared to leading the "hunter to his quarry" and more than eighty photographs of minerals in...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...the entrance to an old shaft of the ferromanganese lode at Praborna, Saint Marcel (Val d'Aosta). southeast...of 4 or 5 power is for and the thick as your eight inches long. These are now-common ALNICO should |
| | Book |
100 maps geared to leading the " hunter to his quarry" and more than eighty photographs of minerals in...the entrance to an old shaft of the ferromanganese lode at Praborna, Saint Marcel (Va l d 'Aosta), southeast...flat cutting edge as thick as your thumb and about eight inches long These are needed to spltt layers of...easier for you If you plan to vIsIt an operating quarry or mine where a permll Is required make the necessary...Center Geological Survey Federal Center Denver Colorado 80225 Index sheets from wh ich the precise maps |