 | | 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 (edition) | | PENNSYLVANIA STATE LIBRARY OF 0144 00141189 1 v < 2 £ m- c oi; c» tt*s“S S Si! at tss^s isl^j...1 ' s WJ= ~S 5! s „3 &«eq Sjg® . . PENNSYLVANIA 1 .8 ^2»SS 3 d 5-s &s z l|lt« 7* < OF ...GEOLOGY REPORT 1976 33 MINERAL COLLECTING IN PENNSYLVANIA by Alan R. Geyer Robert C. Smith, John H....Graphics by Albert E. VanOlden COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL RESOURCES TOPOGRAPHIC...II Copyrighted 1976 by the Commonwealth of Pennsylvania Quotations from this book may be published if |  | | Report (volume) | | diabase, west-central New Jersey and eastern Pennsylvania 141 By Jonathan M. Husch An overview of early...faulting and diabase intrusion, Newark basin, Pennsylvania 176 By Nicholas M. Ratcliffe and William C....selected early Mesozoic copper occurrences in Pennsylvania 320 By R.C. Smith II, S.W. Berkheiser, Jr.,...uranium-bearing sequences in the Newark basin, Pennsylvania and New Jersey, and the San Juan basin, New...Gettysburg, and Culpeper basins. Whereas illite and chlorite are widely distributed, smectites are common in |  | | Report (issue) | | Serpentine-Group Minerals GEOLOGICAL SURVEY PROFESSIONAL PAPER 384-A The Serpentine-Group Minerals By...method-___. Previous DTA studies on serpentine-group minerals._ _______________________________ Present..._--_-__ X-ray classification of the serpentine-group minerals. X- ray powder diffraction studies. . ________________...___________ Clinochrysotile (Globe-type), Gila County, Ariz___________________________________________...Clinoehrysotile (iron-bearing serpentine), Stillwater County, Mont_________________________ Clinochrysotile |
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