 | | Journal (article/letter/editorial) | | Mineral Localities of Philadelphia and Vicinity Author(s): Theodore D. Rand, William W. Jefferis and...org/terms 174 PROCEEDINGS OF THE ACADEMY OF [1892. MINERAL LOCALITIES OF PHILADELPHIA AND VICINITY. BY THEODORE...Philadelphia has long been famned for the number of its mineral localities and the remarkable abundance and variety...large part of Philadelphia is covered with the Delaware River gravels and clays, but most of the streams...about two miles up stream to Fairmount, whose bold hill is composed of a gneiss which apparently rises |  | | 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...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:...Philadelphia: Fairmount Park, Frankford, and Rit- enhouse quarry. SCOLECITE CaAl 2 Si3 Oi .3H 2 O MONOCLINIC |  | | Report (issue) | | and Other Mineral Deposits in Serpentine Rocks Of the Piedmont Upland Maryland, Pennsylvania And Delaware...districts ______ -._-_____-_____-___._. Montgomery County, Md_-_-_---_---_-_-----------_-__--_-_-_Soldiers...Philadelphia district....._._.-_.-.--. ___________ Mineral deposits___-___--_-_-___-.-------_---_---_-----_-_-_----Geologic...___________ 715 716 716 718 719 720 721 721 722 723 Quarry descriptions.-___._-_-_-_-_-_-_---_-___--______-_...___--___-________--____.__.__ Cardiff "green marble" quarry...._._._-__________ Jarrettsville-Dublin district |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...their interest. earth sciences are as wide as the mineral kingdom itself, with something for everyone. How...amber of ancient trees. More than 2,000 distinct mineral species are known; only about 100 of these have...some exceptions, to qualify as gem material a mineral must be beautiful and rare enough to be desirable...weight, of the mineral. 4. 5. 6. 7. 8. 9. β β β β the innate shape of the mineral. Cleavage β |
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