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The 'Dinero Dumps (Lake County)' file is part of the Grover Heinrichs mining collection. Grover was the Vice President of Heinrichs GEOEXploration, located in Tucson, Arizona. The collection contains over 1,400 folders including economic geology reports, maps, photos, correspondence, drill logs and other related materials. The focus of much of the information is on the western United States, particularly Arizona, but the collection also includes files on mining activity throughout the United States, foreign countries, and 82 mineral commodities.
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The table contains oxide and cation compositions of olivine grains from drill core of the Duluth Complex, Minnesota. The oxides were determined by electron probe microanalysis (EPMA) and are reported in weight percent (wt%). The cations were calculated based on the oxide compositions and are reported in mole percent (mol%). Olivine is a magnesium iron orthosilicate mineral with the formula (Mg2+, Fe2+)2SiO4. Olivine forms a solid solution series with magnesium (Mg) at one end and iron (Fe) at the other. Forsterite (Mg2SiO4) is the magnesium endmember and fayalite (Fe2SiO4) is the iron endmember. Minor elements can substitute into the crystal structure, such as manganese (Mn) and nickel (Ni). To better understand...


map background search result map search result map USGS Topo Map Vector Data (Vector) 13508 Eastlake, Ohio 20170309 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Aetna Springs, California 20160809 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Lake Polly, Minnesota 20160528 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 21794 Indian Butte, Oregon 20170626 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 45837 Tucker Hill, Oregon 20170621 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 45837 Tucker Hill, Oregon 20170621 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 1206 Antler Point, Oregon 20170624 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 559 Alkali Buttes, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 10334 Cougar Mountain, Oregon 20170627 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 9770 Commodore Ridge, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 30085 Moonlight Butte, Oregon 20170628 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 31164 Murphy Waterholes NE, Oregon 20170625 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 38034 Riverbed Butte, Oregon 20170619 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39173 Sage Hen Butte, Oregon 20170703 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39185 Sagebrush Knoll, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39780 Sand Rock, Oregon 20170626 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 43713 Summer Lake, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 69775 Crater Lake, Montana 20170719 for 7.5 x 7.5 minute FileGDB 10.1 Oxide and Cation Compositions of Olivine Grains from Drill Core in the Duluth Complex, Minnesota USGS Topo Map Vector Data (Vector) 13508 Eastlake, Ohio 20170309 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Aetna Springs, California 20160809 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Lake Polly, Minnesota 20160528 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 21794 Indian Butte, Oregon 20170626 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 45837 Tucker Hill, Oregon 20170621 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 45837 Tucker Hill, Oregon 20170621 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 1206 Antler Point, Oregon 20170624 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 559 Alkali Buttes, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 10334 Cougar Mountain, Oregon 20170627 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 9770 Commodore Ridge, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 30085 Moonlight Butte, Oregon 20170628 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 31164 Murphy Waterholes NE, Oregon 20170625 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 38034 Riverbed Butte, Oregon 20170619 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39173 Sage Hen Butte, Oregon 20170703 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39185 Sagebrush Knoll, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 39780 Sand Rock, Oregon 20170626 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 43713 Summer Lake, Oregon 20170629 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 69775 Crater Lake, Montana 20170719 for 7.5 x 7.5 minute FileGDB 10.1 Oxide and Cation Compositions of Olivine Grains from Drill Core in the Duluth Complex, Minnesota