 | | Journal (article/letter/editorial) | | COMPOSITION AND PHYSICAL PROPERTIES OF THE MINERAL IDDINGSITE BY CLARENCE S. ROSS Geologist, United States...COMPOSITION, AND PHYSI- CAL PROPERTIES OF THE MINERAL IDDINGSITE By Clarence S. Ross Geologist, United States...chemical com- abundant mineral in basaltic an iddingsite; that, name was long remained matters of...following is based upon paper eight analyses of iddingsite from six localities, and while the results of...give complete understanding a composition of iddingsite, they establish it distinct mineral as a have |  | | Journal (article/letter/editorial) | | MINERALOGIST, VOL. 42, JIILY-AUGUST 1957 THE NATURE OF IDDINGSITE IN SOME BASALTIC ROCKS OF NEW MEXICO* Mryc-Snaw...Socorro,New Merico ABSRACT No description of iddingsite has demonstrated that it has a defrnite chemical...rocks from New Mexico and some from Colorado containing iddingsite show varying degrees of alteration...weathering process. The alteration of olivine to iddingsite occurs largely in basaltic rocks whose modal...crystallization. Study of iddingsite samples from New Mexico and Colorado by the *-ray powder difiraction |  | | Report (issue) | | Petrology of the San Juan Region Southwestern Colorado By ESPER S. LARSEN, JR., and WHITMAN CROSS GEOLOGICAL...an area of I2fiOO square miles in southwestern Colorado UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...work, the Creecle, Summitville, Del Norte, and Conejos quadrangles were mapped only in detailed reconnaissance...when Larsen and C. S. Ross worked chiefly in the Conejos quadrangle. Cross joined the field party for a...GEOLOGY AND PETROLOGY OF THE SAN JUAN REGION, COLORADO vard University contributed liberally by financing |  | | 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 (edition) | | of Utrecht. Dean Charles F. Poe, University of Colorado, Boulder, Colo. Dr. F. H. Pough, American Museum...wax yellow in powder. Found in pegmatite in Colorado and Sweden. Chloraluminite (AlCbTELO) is rhombohedral...quartz, microcline, and zircon near Pikes Peak, Colorado, and in a topaz mine in the Ilmen Mountains. ...alteration product of cryolite in El Paso County, Colorado. 2. Multiple halides with type formula AmB„Xp...= deep blue. Found in ore deposits, as in Pinal County, Arizona Tachyhydrite (Mg2CaCl6 ■ 12H20) is trigonal |  | | Book (edition) | | red; wax yellow in powder. Found in pegmatite in Colorado and Sweden. Very rare. Chloraluminite (AlCla•...low temperatures. Found with native tellurium in Colorado, Transylvania, etc. Very rare. Baddeleyite (Zr02)... Colorless or purple. From a fluorite mine in Colorado. Very rare. Lindac~erite (3NiO-6CuO • 2As2Os •...in regions of crystalline schists, as in Renfrew County, Ontario, and in Odenwald. In Canada it is associated...with brilliant luster. Found in carnotite ores of Colorado and Utah. Koninckite (FePO 4 • 3H2O) is in fibrous |
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