 | | Report (issue) | | COLLABORATING STATE AGENCIES Geological Survey of Alabama, University, Ala. Department of :ty.lines, Mining...metals-Continued Strontium, by Dennis P. Cox_________________ Talc, soapstone, pyrophyllite, and sericite schist, by..._______________________ -___ Geologic features of talc and soapstone____ Deposits associated with mafic...pinnacles beneath soil cover, Bluegrass, Highland County, Va_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...transverse joints cutting shale at Poverty, Highland County, V a_ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ |  | | Report (issue) | | Georgia ___________________________________ _ Alabama __________________________________ _ Younger rocks...___ _______________________ _______ _ Fauquier County ____ ______ ______ _____ _____ _ Franklin ____...properties _________ .. _____________ _ Halifax County ______ - _____ - __________ ~- _'- __ _ Virgilina..._____ _ ____ __ ... _________________ _ Orange County-· ___________________________ _ Melville ____ -...________ _________________________ _ Pr~nce William County _____________________ _ Crawford _____________________ |  | | Report (issue) | | commercial borates. Lawsonite, first found in Marin county in 1895, has proved to be of great petrographic...nickel telluride, melonite, found in Calaveras County in 1867. New minerals and new mineral this is ...products. The gem-bearing pegmatites of San Diego County have aroused special masses, interest. Many ...Geological Survey. Many crystallized minerals show the property of cleavage. Cleavage is the tendency of a crystal...The scale of hardness is specimen is ; ; 1. Talc 6. Orthoclase 2. Gypsum 7. Quartz 3. Calcite |  | | Report (issue) | | cite all of their occurrences. In such a vast area as may be known to local collectors where excellent...observed in the gold gravels at Cherokee, Butte County, and this locality, became the most noted one in...short articles on California diamonds. A Amador County: few small stones have been picked up near the...towns of Volcano, Oleta and Fiddleto^vn. Butte County: In 1853 it was observed that diamonds occurred...Thompson Flat, two miles north of Oroville. El Dorado County: A diamond weighing 1| carats was found at Forest |  | | Report (issue) | | California 16 Borax 18 Crestmore Pegmatite gem area of southern California Cerro Gordo The glaueophane...tribes in the northeast corner of San Bernardino County in pre-historic times. The old workings here were...of the find and of the general character of the area, which is in the Turquoise Mountains, T. 16 N.,...occupies an area of 30 or 40 miles in extent, but the best mines are in a smaller section, area. — about...were used as color pigments, and talc in some cases as white. Talc in the form of steatite was formed |  | | Report (issue) | | the old Melville mine near l,Jilderness, 0range County. (photograph from "Gold Seekers Turn Again to Virginiai...Stafford Index of mines and prospects .. Index of county maps . Fl Goochland 1 2 3 3 3 4 4 29 30 35...Resources. Some of these old mines are located on the county locat'ion maps. Also, several old mines and prospects...state map (be1ow), are ljsted alphabetica'l1y by county. Summary of gold production'in prospects Vi rgi...Director of the Mint. Pub'l'ication 45 ATBEMARLE COUNTY SIGNIFICANT LOCAL SIRUCIUR€S: FAULT IDENIIFICAIION |  | | Report (issue) | | by State, age, stratigraphic unit, quadrangle or county, and classification group..... Page 8 12 36 45...1967). The present report covers another geographic area, but in most other respects is similar to the first...are assembled by group, State, county, and position within the county. The mixed-rock category is designated...the coordinates include the extreme limits of the area. EXPLANATION OF TERMS AND ARRANGEMENT OF TABLES...for definition of groups.) 3 Clackamas County. (See p. 7 for county codes.) 19 Position of analysis in sequence |
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