 | | Journal (article/letter/editorial) | | arsenic in amounts up to several percent. Pynte, acanthite, polybasite, and silver pseudomorphs after pyrargyrite...reported. It occurs as an alteration product of acanthite, dyscrasite, and silver. Pyrargyrite is relatively...suggest. It is commonly associated with proustite, acanthite, tetrahedrite, stephanite, miargyrite, polybasite...Pyrargyrite has been reported from many occurrences in Colorado mining districts. Sparse though good crystals...found in the early years of mining in the Jo Reynolds mine and in smaller though well-formed crystals |  | | Journal (article/letter/editorial) | | of COLORADO ED RAINES Geology Museum Colorado School of Mines 1310 Maple Street Golden, Colorado 80401...noted Figure 1. Camp Bird mine, level 2, Sneffels district, Ouray County. Raines-Pettem collection,...photographer unknown. B etween 1868 and 1922, Colorado produced almost 260 million pounds of copper....from the Leadville district, with another 50 million pounds mined in San Juan County (Henderson 1926).... During the twentieth century, the Gilman district surpassed Leadville in total copper production with |  | | Book | | .3 COLORADO. of COLORADO. J. S. l GEORGETOWN, COLO. GEORGETOWN COURIER PRINT. 1887. 3 Bancroft...From a mineralogical point of view the wealth of Colorado exceeds that of In the metallic minerals almost...to in the following pages Proceedings of the Colorado Scientific Society. Proceedings of the Academy...Bulletins of the U. S. Geological Survey. J. GEORGETOWN, COLORADO, January, 1887. S. RANDALL. : MINERALS...gravel of streams and in veins. The veins of Gilpin County are especially noteworthy for the amount of gold |  | | 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 |  | | Report (volume) | | A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby |  | 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). |  | | Report (volume) | | ............................................. Colorado........................................................................................ 102 District of Columbia ....................................especially from those of Arkansas, California, Colorado, New Mexico, Oregon, South Dakota, Tennessee,...minerals and rocks, their occurrence and uses: Colorado State Geol. Survey Bull. 6, 1913. 8 USEFUL...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Report (volume) | | Crossroads: Lyons, P. L., 4. Gilbert H., 10. Colorado, South Silverton area: Expanding horizons: Lay..., 11. D. J. Rocky Mtn. geosyncline in Canada: Colorado Plateau: Wengerd, Warren; P. S., 4. S. A., 6....described. Div. Mines, 1; Jenkins, O. P., Choctaw County, Highway 17 area: 3. Toulmin, L. D., Jr., 3. Minor:...analysis: KelH. D., 5. ler, W. D., 3. Talladega County, hematiteOklahoma, potash agstone, granite magnetite...ground water: Powham, C. E. ell, W. J., 4. Marengo County: Newton, J. G., 1. Core-drilling program, ChattanooMica: |
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