 | | Journal (article/letter/editorial) | | ROCKS AND MINERALS 243 WOOD'S CHROME MINE, LANCASTER COUNTY, PENNA. By L. J . D U E R S M I T H Curator...Mineralogy Franklin and Marshall College M u s e u m , Lancaster, Penna. During the year of 1950, the writer had...concerning the famous Wood's Chrome Mine, in southern Lancaster County, Pennsylvania, that he came to the...article describing and bringing up to date this mine would be in order. History There seems to be some...some discrepancy as to what mineral this mine first produced. One source states that the first mineral |  | | 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:...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 |  | | Report (issue) | | Serpentine Rocks Of the Piedmont Upland Maryland, Pennsylvania And Delaware By NANCY C. PEARRE and ALLEN V...districts ______ -._-_____-_____-___._. Montgomery County, Md_-_-_---_---_-_-----------_-__--_-_-_Soldiers...____________ Mine descriptions_______________________________________ Montgomery County, Md___-_______________________...and Harris mines..-_---_-_-_--__-_______. Choate mine._________________________________ Unnamed mine__...mine__.-___-___-_-_-__.__-_.___-____ Calhoun mine---------.-.------------..------- 724 725 726 726 726 727 |  | | Journal (article/letter/editorial) | | enjoyed an all day excursion to the Spokane Molybdenum Mine about 70 miles north of Spokane on May 13, 1951...metamorphic deposits changing to limestone at the Tungston Mine at Trumbull there is wolframite, scheelite, topaz...crystallized at moderate depth at the Iron Mine, Roxbury; a fault zone mine, good specimens of siderite, arsenopyrite...sphalerite were found. The Connecticut Valley Copper Mine, Bristol, furnished malachite, azurite. and chalcocite...feldspar which in appearance is similar to a floating mine around which stems protrude. These are surrounded |  | | Book (edition) | | aditus, an entrance.] horizontal entrance to a mine. The material under chem* blowpipe examination...Hexagonal system, 33, Feldspathic. Of the same texas a principal ingredient con- Homogeneous. ture and...iesselated structure. Magnesian. Containing magnesia. little Nitrate. acid. A compound crystal, or one Mammillary...; and \vere the temperature of our globe but a little lower than it is, we should rarely see water Our...by drop, and each drop as it dries, deposits a little carbonate of lime. At first it forms but a mere |  | | Book (edition) | | aster, star.] HavThe ing the appearance of a stai mine. An oxyd having an acrid within. Alkali. Containing... a hammer,] 65. Mammillary, [Lat. mu?Kmilla, a little teat,] Micaceous, 53. Changed Containing man-...temperature of our globe rock as limestone but a little lower than it is, we should rarely see water except...by drop, and each drop as it dries, deposits a little carbonate of lime. At first it forms but a mere...the primary form, there would be comparatively little of that variety and beau ty which we actually find |  | | Book (edition) | | in this part of the series the mineralogist has little occasion to take note. Minerals differ in specific...separate fore. CRYSTALLOGRAPHY. 11 With a little ingenuity the student may construct a goniometer...forms under each of the systems that differ but little in angles from some of other systems for example...right one of the six planes will be 3c f & la. By a little study, the expressions for the other five adjoining...adjoining faces are at right angles to one another. The little ridges of the striated surfaces are made up of |  | | Book (edition) | | 66. AcICULAR, [Lat. The horizontal entrance to a mine. Alkali An oxyd having an acrid taste, and caustic;...of an Mammillary, [Lat. mammilla, a octahedron. little teat,] 53. Odor of minerals, p. 66. Manganesian~...limestone ; and were the temperature of our globe but a little lower than it is, we should rarely see water except...by drop, and each drop as it dries, deposits a little carbonate of lime. At first it forms but a mere...the primary form, there would be comparatively little of that variety and beauty which ,ve actually find |  | | Book (edition) | | mortised and tied together, so as to admit of a little movement at centre. Then, the model when in its...expressions, appearing at first sight possibly a little obscure, may be translated into simple language...[i-i] a [6>] As The abridged symbols need very little explanation additional to that given on p. 25....These relations may perhaps be made more clear by a little further through the vertical axis at Suppose a...; when this is not the case the relations are a little less simple. m MATHEMATICAL CRYSTALLOGRAPHY |  | | Book (edition) | | ^ fe o -• vO y MINERALOGY AND MINING. Mine Accidents —Ventilation — Ore Dressing, Etc. DESCRIPTIVE...lific of valuable treats and advice." PRACTICAL MINE VENTILATION. WILSON. For the Use of Mining Engineers... Copyright bt EDWARD S. DANA 1877. Press of J. J. Little & Co* Astor Place, New York. ; PREFACE. preparation...above, there is also the department of Economic Mine) alogy, which is not here and (3) in the coarser...mortised and tied together, so as to admit of a little movement at centre. Then, the model when in its |  | | Book (edition) | | COPYRIGHT BT EDWARD S. DANA 1877. Press of J. J. Little & Co* Astor Place, New York. PREFACE. " " Text-Book...mortised and tied together, so as to admit of a little movement at centre. Then, the model when in its...expressions, appearing at 'first sight possibly a little obscure, may be translated into simple language...oo : : # a a The abridged symbols need very little explanation additional to that given on p. 25....These relations may perhaps be made more clear by a little further explanation. Suppose a plane to pass through |  | | Book (edition) | | from the Tourmaline Q ueen .1ine, Pala, San Diego County, California. From a pen-and-ink drawing by W. E...price increases, which make it more attractive to mine domestic deposits at a profit. Foreign labor is...cut gem 4. Mounce diamond crystal 5. Gibson's Ruby mine, Cowee Creek, North Carolina 6. Corundum Hill, North...Eldorado Bar, Montana 8. W. D. Baltzley 9. Ellis mine pocket, Hiddenite, North Carolina 10. View of American...Pedro mine, Pala, California 15. Morganite crystal from Pala, California 16. Hazel W. pegmatite mine, Pala |
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