 | | Journal (article/letter/editorial) | | Museum of Nature and Science 2001 Colorado Boulevard Denver, Colorado 80205-5798 jmurphy @ dmns.org PETER...Survey MS 150, Box 25046 Federal Center Denver, Colorado 80225-0046 pmodresk @ usgs.gov Unless otherwise...to 2000) J oin us for a gemstone tour around Colorado! Our field trip takes us from east to west in...in the same way you may have toured through Colorado on a mineral collecting trip. This route, from the...ages of rocks where gemstones are known to occur. We cannot discuss every Colorado gemstone occurrence; |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...a k e w o o d , Colorado 80225 DIANNE L. K I L E 333 S a l e m Street Aurora, Colorado 80011 C O L O...and J. A. Mur phy for an update to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS... Quartz was a familiar gemstone to many early Colorado residents, as documented by an extensive body...body of literature. The first published list of Colorado mineral localities (in cluding quartz) was included |  | | Report (issue) | | Denver, Colorado, USA © 2011 by Lithographie, LLC P.O. Box 11613 • Denver, CO 80211 • USA Phone 1.303...collection Robert Weldon photo Above: Topaz, 5.5 cm tall El Chalten, Santa Cruz, Argentina Scott Rudolph collection...Topaz ALFREDO PETROV & JOHN RAKOVAN 34. Colorful Colorado DAVID W. BUNK 42. Mongolian Topaz: The Gorkhi...and chromium can substitute for aluminum in the crystal structure. Ideal "fluortopaz" (Al2SiO4F2) would...lighter and larger than fluorine. Crystals and Crystal Structure Crystals are orthorhombic and are typically |  | | Journal (article/letter/editorial) | | COLORADO TOPAZ Topaz, Al Si0 (F,OH) is one of Colorado's better known gem minerals. Though Col orado...(PJM), 975 (TCM) Box 25046, Federal Center Denver, Colorado 80225-0046 A ccording to Cross and Hillebrand...discovery of Colorado topaz was made about 1880 by a Mr. Thiebald,* "a prospector of Colorado Springs."...have been in the Crystal Park area. The largest fine-quality topaz specimens in Colorado occur in several...are also referred to the general discussions of Colorado topaz in Eckel (1961) and Pearl (1963) and to |  | | Book (volume) | | GEMSTONES RIC NORTInHIwo AME A Volumes John Sinkankas _ GEMSTONES OF NORTH AMERICA In Two Volumes ... ® Volume I Gemstones, of all the mineral treasures to be found in North America, are perhaps the most...what circumstances it is found. All classes of gemstones are covered—commercial, rare, unusual, decorative...understanding of the circumstances under which gemstones are found. Jewelers and gemologists will find...American gemstones. Thorough, clear, and, above all, easily read and understood, GEMSTONES OF NORTH AMERICA |  | | Journal (article/letter/editorial) | | northwest acro88 the cliff’s of Glen Cove to South Park and the Tarryall Mountains. Researchers have subdivided...Ihe Pikn P c i l Balhdilh dates for rocks in this area rnngc from I .7 to I .8 billion years. The zone...northeasterly-trending continentul Figure 2. Geologic map of the Colorado Front Range showing the Precambrian metamorphic...Karistrom 1978; Lanthier 1978). Farther south in Colorado, sediments accumulated in decper-water rocks formed...Survey into “Early, Middle, and Late” Eras. In Colorado we because of the subsequent folding and overthrusting |  | | Report (issue) | | 978-0-9836323-2-0 Publisher Lithographie, Ltd. Denver, Colorado, USA Design and Layout Gloria A. Staebler © 2012...Lithographic, Ltd. PO Box 11613 • Denver, CO 80211 • USA Phone: 1.303.495.5521 • Fax: 1.303.482.1238 W\\w...petrify the frightened girl, turning her into pure crystal. Various versions impute all sorts of reprehensible...opponent would have been provided with a clear rock crystal goblet, while his clever antagonist drank water...the uncooperative archaeological fact that rock crystal goblets and other containers are abundantly documented |  | | Book | | information b Book review c Crystal morphology information d Crystal drawing ff Continues on following...193-256 137-208 129-192 209-264 193-256 [ [ COLORADO-Ill] 177-256 121-184 89-168 1-120 1-88 [ ...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400...69-132 65-128 1-64 11 / 1980 20 I 1989 [ COLORADO-I] [ 289-352 385-448 [ AUSTRALlA] 353-504...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN |  | | 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 |  | | Book | | very early aesthetic interest — in gems and gemstones, which are, after all, merely Ee > ~ selected...specimens. The Bible gives us three major lists of gemstones. Perhaps the bestknown is that in Revelations...is complete without an account of the twelve gemstones in the breastplate of Aaron, the first high priest...with certainty, but they include gemstones such as carnelian, rock crystal, lapis-lazuli, citrine, amethyst...only to rulers, royalty, and the wealthy. Since gemstones are nothing more than selected minerals of rather |
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