 | | Report (issue) | | DESCRIPTIVE MINERALOGY OF PENNSYLVANIA 104 Na 2Al 2 Si3 Oi .2H 2 O; SiO 2 47.4, A1 2 O 3 26.8, Na...Na 2 O 16.3, Lenni, Delaware County. Crystals. Eyerman, 1911, 11. Composition: Analysis: Fe 2 O3 CaO...320 Sp.gr LOCALITIES: Berks County: Birdsboro, and Gickerville; Delaware County: Leiperville, Lenni (druses...Felton's farm (Chester), and Ward's quarry; Montgomery County: Sumneytown, and Perkiomenville ; Philadelphia:...Railroad cut east of Reading (probably Birdsboro), Berks County. White, Smith, 1910, 540. silky mass of radiating |  | | Report (issue) | | ___________ Clinochrysotile (Globe-type), Gila County, Ariz___________________________________________...Clinoehrysotile (iron-bearing serpentine), Stillwater County, Mont_________________________ Clinochrysotile...Hill, Harford County, Md____________________ Clinochrysotile and lizardite, Morris County, N.J________...Clinochrysotile and lizardite, variant form, Morris County, N.J.____________________________ Lizardite plus...section___________-___ Lizardite (deweylite), Delaware County, Pa__-___________-_____________-_---__---__--_-Lizardite |  | | Book (volume) | | must be used for cach determination. An ordinary spring balance, such as that used for weighing silver...the transmission of compression along a spiral spring, and it was left to Fresnel in 1814, by introducing...deviated when marching from open ground into a dense wheatfield and out again into open ground (Figure 336)....soldiers deviated when passing through a dense wheatfield The refraction of a wave-front when it meets...the early 1930s J. F. Halford Watkins designed a spring- holder which fitted on to the Herbert Smith refractometer |
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